diff options
author | Tom Rini <trini@konsulko.com> | 2018-01-15 06:26:38 +0300 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2018-01-15 06:26:38 +0300 |
commit | 3dde8f20377c3a051dda64497bdf0cdb23e03a2d (patch) | |
tree | 89d16fac9d2df2931a87e69cae60c757a475dcf7 | |
parent | 18af965798153cea955773633feb05ed1647e9f6 (diff) | |
parent | db359efd5907edbeaea2e3eb3504729f60208cd8 (diff) | |
download | u-boot-3dde8f20377c3a051dda64497bdf0cdb23e03a2d.tar.xz |
Merge git://git.denx.de/u-boot-mmc
-rw-r--r-- | cmd/mmc.c | 21 | ||||
-rw-r--r-- | cmd/mvebu/bubt.c | 2 | ||||
-rw-r--r-- | common/Makefile | 2 | ||||
-rw-r--r-- | common/spl/Kconfig | 9 | ||||
-rw-r--r-- | configs/am335x_hs_evm_defconfig | 4 | ||||
-rw-r--r-- | configs/omapl138_lcdk_defconfig | 1 | ||||
-rw-r--r-- | configs/openrd_base_defconfig | 1 | ||||
-rw-r--r-- | configs/openrd_client_defconfig | 1 | ||||
-rw-r--r-- | configs/openrd_ultimate_defconfig | 1 | ||||
-rw-r--r-- | drivers/mmc/Kconfig | 76 | ||||
-rw-r--r-- | drivers/mmc/Makefile | 4 | ||||
-rw-r--r-- | drivers/mmc/exynos_dw_mmc.c | 3 | ||||
-rw-r--r-- | drivers/mmc/fsl_esdhc.c | 11 | ||||
-rw-r--r-- | drivers/mmc/gen_atmel_mci.c | 42 | ||||
-rw-r--r-- | drivers/mmc/meson_gx_mmc.c | 2 | ||||
-rw-r--r-- | drivers/mmc/mmc-uclass.c | 99 | ||||
-rw-r--r-- | drivers/mmc/mmc.c | 1614 | ||||
-rw-r--r-- | drivers/mmc/mmc_private.h | 4 | ||||
-rw-r--r-- | drivers/mmc/omap_hsmmc.c | 4 | ||||
-rw-r--r-- | drivers/mmc/sandbox_mmc.c | 5 | ||||
-rw-r--r-- | drivers/mmc/sdhci.c | 7 | ||||
-rw-r--r-- | drivers/power/power_core.c | 61 | ||||
-rw-r--r-- | include/mmc.h | 212 |
23 files changed, 1731 insertions, 455 deletions
@@ -23,7 +23,12 @@ static void print_mmcinfo(struct mmc *mmc) (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff); - printf("Tran Speed: %d\n", mmc->tran_speed); + printf("Bus Speed: %d\n", mmc->clock); +#if CONFIG_IS_ENABLED(MMC_VERBOSE) + printf("Mode : %s\n", mmc_mode_name(mmc->selected_mode)); + mmc_dump_capabilities("card capabilities", mmc->card_caps); + mmc_dump_capabilities("host capabilities", mmc->host_caps); +#endif printf("Rd Block Len: %d\n", mmc->read_bl_len); printf("%s version %d.%d", IS_SD(mmc) ? "SD" : "MMC", @@ -40,15 +45,19 @@ static void print_mmcinfo(struct mmc *mmc) printf("Bus Width: %d-bit%s\n", mmc->bus_width, mmc->ddr_mode ? " DDR" : ""); +#if CONFIG_IS_ENABLED(MMC_WRITE) puts("Erase Group Size: "); print_size(((u64)mmc->erase_grp_size) << 9, "\n"); +#endif if (!IS_SD(mmc) && mmc->version >= MMC_VERSION_4_41) { bool has_enh = (mmc->part_support & ENHNCD_SUPPORT) != 0; bool usr_enh = has_enh && (mmc->part_attr & EXT_CSD_ENH_USR); +#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING) puts("HC WP Group Size: "); print_size(((u64)mmc->hc_wp_grp_size) << 9, "\n"); +#endif puts("User Capacity: "); print_size(mmc->capacity_user, usr_enh ? " ENH" : ""); @@ -297,6 +306,8 @@ static int do_mmc_read(cmd_tbl_t *cmdtp, int flag, return (n == cnt) ? CMD_RET_SUCCESS : CMD_RET_FAILURE; } + +#if CONFIG_IS_ENABLED(MMC_WRITE) static int do_mmc_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { @@ -355,6 +366,8 @@ static int do_mmc_erase(cmd_tbl_t *cmdtp, int flag, return (n == cnt) ? CMD_RET_SUCCESS : CMD_RET_FAILURE; } +#endif + static int do_mmc_rescan(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { @@ -433,6 +446,7 @@ static int do_mmc_list(cmd_tbl_t *cmdtp, int flag, return CMD_RET_SUCCESS; } +#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING) static int parse_hwpart_user(struct mmc_hwpart_conf *pconf, int argc, char * const argv[]) { @@ -582,6 +596,7 @@ static int do_mmc_hwpartition(cmd_tbl_t *cmdtp, int flag, return CMD_RET_FAILURE; } } +#endif #ifdef CONFIG_SUPPORT_EMMC_BOOT static int do_mmc_bootbus(cmd_tbl_t *cmdtp, int flag, @@ -785,13 +800,17 @@ static int do_mmc_bkops_enable(cmd_tbl_t *cmdtp, int flag, static cmd_tbl_t cmd_mmc[] = { U_BOOT_CMD_MKENT(info, 1, 0, do_mmcinfo, "", ""), U_BOOT_CMD_MKENT(read, 4, 1, do_mmc_read, "", ""), +#if CONFIG_IS_ENABLED(MMC_WRITE) U_BOOT_CMD_MKENT(write, 4, 0, do_mmc_write, "", ""), U_BOOT_CMD_MKENT(erase, 3, 0, do_mmc_erase, "", ""), +#endif U_BOOT_CMD_MKENT(rescan, 1, 1, do_mmc_rescan, "", ""), U_BOOT_CMD_MKENT(part, 1, 1, do_mmc_part, "", ""), U_BOOT_CMD_MKENT(dev, 3, 0, do_mmc_dev, "", ""), U_BOOT_CMD_MKENT(list, 1, 1, do_mmc_list, "", ""), +#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING) U_BOOT_CMD_MKENT(hwpartition, 28, 0, do_mmc_hwpartition, "", ""), +#endif #ifdef CONFIG_SUPPORT_EMMC_BOOT U_BOOT_CMD_MKENT(bootbus, 5, 0, do_mmc_bootbus, "", ""), U_BOOT_CMD_MKENT(bootpart-resize, 4, 0, do_mmc_boot_resize, "", ""), diff --git a/cmd/mvebu/bubt.c b/cmd/mvebu/bubt.c index a1997ac0d3..23fb8cd807 100644 --- a/cmd/mvebu/bubt.c +++ b/cmd/mvebu/bubt.c @@ -110,7 +110,7 @@ static ulong get_load_addr(void) /******************************************************************** * eMMC services ********************************************************************/ -#ifdef CONFIG_DM_MMC +#if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(MMC_WRITE) static int mmc_burn_image(size_t image_size) { struct mmc *mmc; diff --git a/common/Makefile b/common/Makefile index 14166209fe..c7bde239c1 100644 --- a/common/Makefile +++ b/common/Makefile @@ -109,6 +109,7 @@ obj-$(CONFIG_IO_TRACE) += iotrace.o obj-y += memsize.o obj-y += stdio.o +ifndef CONFIG_SPL_BUILD # This option is not just y/n - it can have a numeric value ifdef CONFIG_FASTBOOT_FLASH obj-y += image-sparse.o @@ -119,6 +120,7 @@ ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV obj-y += fb_nand.o endif endif +endif ifdef CONFIG_CMD_EEPROM_LAYOUT obj-y += eeprom/eeprom_field.o eeprom/eeprom_layout.o diff --git a/common/spl/Kconfig b/common/spl/Kconfig index 9d35f41233..d686b1ecbd 100644 --- a/common/spl/Kconfig +++ b/common/spl/Kconfig @@ -301,6 +301,7 @@ config SPL_ENV_SUPPORT config SPL_SAVEENV bool "Support save environment" depends on SPL_ENV_SUPPORT + select SPL_MMC_WRITE if ENV_IS_IN_MMC help Enable save environment support in SPL after setenv. By default the saveenv option is not provided in SPL, but some boards need @@ -415,6 +416,14 @@ config SPL_MMC_SUPPORT this option to build the drivers in drivers/mmc as part of an SPL build. +config SPL_MMC_WRITE + bool "MMC/SD/SDIO card support for write operations in SPL" + depends on SPL_MMC_SUPPORT + default n + help + Enable write access to MMC and SD Cards in SPL + + config SPL_MPC8XXX_INIT_DDR_SUPPORT bool "Support MPC8XXX DDR init" help diff --git a/configs/am335x_hs_evm_defconfig b/configs/am335x_hs_evm_defconfig index 78cf48dde7..63e7a077ae 100644 --- a/configs/am335x_hs_evm_defconfig +++ b/configs/am335x_hs_evm_defconfig @@ -13,10 +13,12 @@ CONFIG_ANDROID_BOOT_IMAGE=y CONFIG_FIT_IMAGE_POST_PROCESS=y CONFIG_SPL_LOAD_FIT=y CONFIG_SPL_FIT_IMAGE_POST_PROCESS=y +CONFIG_LOGLEVEL=3 CONFIG_SYS_CONSOLE_INFO_QUIET=y CONFIG_VERSION_VARIABLE=y CONFIG_ARCH_MISC_INIT=y CONFIG_SPL=y +CONFIG_SPL_FIT_IMAGE_TINY=y # CONFIG_SPL_ENV_SUPPORT is not set # CONFIG_SPL_EXT_SUPPORT is not set CONFIG_SPL_MTD_SUPPORT=y @@ -37,6 +39,7 @@ CONFIG_DFU_RAM=y CONFIG_DM_I2C=y CONFIG_MISC=y CONFIG_DM_MMC=y +# CONFIG_MMC_HW_PARTITIONING is not set CONFIG_MMC_OMAP_HS=y CONFIG_NAND=y CONFIG_SPI_FLASH=y @@ -60,5 +63,6 @@ CONFIG_USB_GADGET_VENDOR_NUM=0x0451 CONFIG_USB_GADGET_PRODUCT_NUM=0xd022 CONFIG_USB_GADGET_DOWNLOAD=y CONFIG_USB_ETHER=y +CONFIG_SPL_TINY_MEMSET=y CONFIG_RSA=y CONFIG_LZO=y diff --git a/configs/omapl138_lcdk_defconfig b/configs/omapl138_lcdk_defconfig index 8d6b12f5b7..0d4506ec44 100644 --- a/configs/omapl138_lcdk_defconfig +++ b/configs/omapl138_lcdk_defconfig @@ -8,6 +8,7 @@ CONFIG_SPL_MMC_SUPPORT=y CONFIG_SPL_SERIAL_SUPPORT=y CONFIG_SPL_NAND_SUPPORT=y CONFIG_BOOTDELAY=3 +CONFIG_LOGLEVEL=3 CONFIG_VERSION_VARIABLE=y # CONFIG_DISPLAY_CPUINFO is not set # CONFIG_DISPLAY_BOARDINFO is not set diff --git a/configs/openrd_base_defconfig b/configs/openrd_base_defconfig index 1a829b763f..f91e0f9edb 100644 --- a/configs/openrd_base_defconfig +++ b/configs/openrd_base_defconfig @@ -25,6 +25,7 @@ CONFIG_CMD_UBI=y CONFIG_ISO_PARTITION=y CONFIG_ENV_IS_IN_NAND=y CONFIG_MVSATA_IDE=y +# CONFIG_MMC_HW_PARTITIONING is not set CONFIG_SYS_NS16550=y CONFIG_USB=y CONFIG_USB_EHCI_HCD=y diff --git a/configs/openrd_client_defconfig b/configs/openrd_client_defconfig index 7a95b5b54f..e65c437d88 100644 --- a/configs/openrd_client_defconfig +++ b/configs/openrd_client_defconfig @@ -25,6 +25,7 @@ CONFIG_CMD_UBI=y CONFIG_ISO_PARTITION=y CONFIG_ENV_IS_IN_NAND=y CONFIG_MVSATA_IDE=y +# CONFIG_MMC_HW_PARTITIONING is not set CONFIG_SYS_NS16550=y CONFIG_USB=y CONFIG_USB_EHCI_HCD=y diff --git a/configs/openrd_ultimate_defconfig b/configs/openrd_ultimate_defconfig index 757be16f53..dfd809dbbb 100644 --- a/configs/openrd_ultimate_defconfig +++ b/configs/openrd_ultimate_defconfig @@ -25,6 +25,7 @@ CONFIG_CMD_UBI=y CONFIG_ISO_PARTITION=y CONFIG_ENV_IS_IN_NAND=y CONFIG_MVSATA_IDE=y +# CONFIG_MMC_HW_PARTITIONING is not set CONFIG_SYS_NS16550=y CONFIG_USB=y CONFIG_USB_EHCI_HCD=y diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig index 8fbeaa740d..ab0627a8af 100644 --- a/drivers/mmc/Kconfig +++ b/drivers/mmc/Kconfig @@ -10,6 +10,13 @@ config MMC If you want MMC/SD/SDIO support, you should say Y here and also to your specific host controller driver. +config MMC_WRITE + bool "support for MMC/SD write operations" + depends on MMC + default y + help + Enable write access to MMC and SD Cards + config DM_MMC bool "Enable MMC controllers using Driver Model" depends on DM @@ -42,6 +49,75 @@ config ARM_PL180_MMCI If you have an ARM(R) platform with a Multimedia Card slot, say Y or M here. +config MMC_QUIRKS + bool "Enable quirks" + default y + help + Some cards and hosts may sometimes behave unexpectedly (quirks). + This option enable workarounds to handle those quirks. Some of them + are enabled by default, other may require additionnal flags or are + enabled by the host driver. + +config MMC_HW_PARTITIONING + bool "Support for HW partitioning command(eMMC)" + default y + help + This adds a command and an API to do hardware partitioning on eMMC + devices. + +config MMC_IO_VOLTAGE + bool "Support IO voltage configuration" + help + IO voltage configuration allows selecting the voltage level of the IO + lines (not the level of main supply). This is required for UHS + support. For eMMC this not mandatory, but not enabling this option may + prevent the driver of using the faster modes. + +config SPL_MMC_IO_VOLTAGE + bool "Support IO voltage configuration in SPL" + default n + help + IO voltage configuration allows selecting the voltage level of the IO + lines (not the level of main supply). This is required for UHS + support. For eMMC this not mandatory, but not enabling this option may + prevent the driver of using the faster modes. + +config MMC_UHS_SUPPORT + bool "enable UHS support" + depends on MMC_IO_VOLTAGE + help + The Ultra High Speed (UHS) bus is available on some SDHC and SDXC + cards. The IO voltage must be switchable from 3.3v to 1.8v. The bus + frequency can go up to 208MHz (SDR104) + +config SPL_MMC_UHS_SUPPORT + bool "enable UHS support in SPL" + depends on SPL_MMC_IO_VOLTAGE + help + The Ultra High Speed (UHS) bus is available on some SDHC and SDXC + cards. The IO voltage must be switchable from 3.3v to 1.8v. The bus + frequency can go up to 208MHz (SDR104) + +config MMC_HS200_SUPPORT + bool "enable HS200 support" + help + The HS200 mode is support by some eMMC. The bus frequency is up to + 200MHz. This mode requires tuning the IO. + + +config SPL_MMC_HS200_SUPPORT + bool "enable HS200 support in SPL" + help + The HS200 mode is support by some eMMC. The bus frequency is up to + 200MHz. This mode requires tuning the IO. + +config MMC_VERBOSE + bool "Output more information about the MMC" + default y + help + Enable the output of more information about the card such as the + operating mode. + config SPL_MMC_TINY bool "Tiny MMC framework in SPL" help diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index 9af375b044..64b6f21c61 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -7,6 +7,7 @@ obj-y += mmc.o obj-$(CONFIG_$(SPL_)DM_MMC) += mmc-uclass.o +obj-$(CONFIG_$(SPL_)MMC_WRITE) += mmc_write.o ifndef CONFIG_$(SPL_)BLK obj-y += mmc_legacy.o @@ -16,9 +17,6 @@ obj-$(CONFIG_SUPPORT_EMMC_BOOT) += mmc_boot.o ifdef CONFIG_SPL_BUILD obj-$(CONFIG_SPL_MMC_BOOT) += fsl_esdhc_spl.o -obj-$(CONFIG_SPL_SAVEENV) += mmc_write.o -else -obj-y += mmc_write.o endif obj-$(CONFIG_ARM_PL180_MMCI) += arm_pl180_mmci.o diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c index 5edd383c68..e40575e589 100644 --- a/drivers/mmc/exynos_dw_mmc.c +++ b/drivers/mmc/exynos_dw_mmc.c @@ -168,6 +168,7 @@ static int exynos_dwmci_get_config(const void *blob, int node, if (host->dev_index > 4) { printf("DWMMC%d: Can't get the dev index\n", host->dev_index); + free(priv); return -EINVAL; } @@ -178,6 +179,7 @@ static int exynos_dwmci_get_config(const void *blob, int node, base = fdtdec_get_addr(blob, node, "reg"); if (!base) { printf("DWMMC%d: Can't get base address\n", host->dev_index); + free(priv); return -EINVAL; } host->ioaddr = (void *)base; @@ -187,6 +189,7 @@ static int exynos_dwmci_get_config(const void *blob, int node, if (err) { printf("DWMMC%d: Can't get sdr-timings for devider\n", host->dev_index); + free(priv); return -EINVAL; } diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index 499d622c6d..71c62f4233 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -647,7 +647,11 @@ static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc) esdhc_write32(®s->clktunectrlstatus, 0x0); /* Put VEND_SPEC to default value */ - esdhc_write32(®s->vendorspec, VENDORSPEC_INIT); + if (priv->vs18_enable) + esdhc_write32(®s->vendorspec, (VENDORSPEC_INIT | + ESDHC_VENDORSPEC_VSELECT)); + else + esdhc_write32(®s->vendorspec, VENDORSPEC_INIT); /* Disable DLL_CTRL delay line */ esdhc_write32(®s->dllctrl, 0x0); @@ -665,7 +669,7 @@ static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc) #endif /* Set the initial clock speed */ - mmc_set_clock(mmc, 400000); + mmc_set_clock(mmc, 400000, false); /* Disable the BRR and BWR bits in IRQSTAT */ esdhc_clrbits32(®s->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR); @@ -676,9 +680,6 @@ static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc) /* Set timout to the maximum value */ esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16); - if (priv->vs18_enable) - esdhc_setbits32(®s->vendorspec, ESDHC_VENDORSPEC_VSELECT); - return 0; } diff --git a/drivers/mmc/gen_atmel_mci.c b/drivers/mmc/gen_atmel_mci.c index 22154d13d7..1c108b5470 100644 --- a/drivers/mmc/gen_atmel_mci.c +++ b/drivers/mmc/gen_atmel_mci.c @@ -74,6 +74,20 @@ static void dump_cmd(u32 cmdr, u32 arg, u32 status, const char* msg) cmdr, cmdr & 0x3F, arg, status, msg); } +static inline void mci_set_blklen(atmel_mci_t *mci, int blklen) +{ + unsigned int version = atmel_mci_get_version(mci); + + blklen &= 0xfffc; + + /* MCI IP version >= 0x200 has blkr */ + if (version >= 0x200) + writel(MMCI_BFINS(BLKLEN, blklen, readl(&mci->blkr)), + &mci->blkr); + else + writel(MMCI_BFINS(BLKLEN, blklen, readl(&mci->mr)), &mci->mr); +} + /* Setup for MCI Clock and Block Size */ #ifdef CONFIG_DM_MMC static void mci_set_mode(struct udevice *dev, u32 hz, u32 blklen) @@ -124,7 +138,6 @@ static void mci_set_mode(struct mmc *mmc, u32 hz, u32 blklen) priv->curr_clk = bus_hz / (clkdiv * 2 + clkodd + 2); else priv->curr_clk = (bus_hz / (clkdiv + 1)) / 2; - blklen &= 0xfffc; mr = MMCI_BF(CLKDIV, clkdiv); @@ -138,14 +151,10 @@ static void mci_set_mode(struct mmc *mmc, u32 hz, u32 blklen) */ if (version >= 0x500) mr |= MMCI_BF(CLKODD, clkodd); - else - mr |= MMCI_BF(BLKLEN, blklen); writel(mr, &mci->mr); - /* MCI IP version >= 0x200 has blkr */ - if (version >= 0x200) - writel(MMCI_BF(BLKLEN, blklen), &mci->blkr); + mci_set_blklen(mci, blklen); if (mmc->card_caps & mmc->cfg->host_caps & MMC_MODE_HS) writel(MMCI_BIT(HSMODE), &mci->cfg); @@ -236,7 +245,6 @@ static int atmel_mci_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, { struct atmel_mci_plat *plat = dev_get_platdata(dev); struct atmel_mci_priv *priv = dev_get_priv(dev); - struct mmc *mmc = mmc_get_mmc_dev(dev); atmel_mci_t *mci = plat->mci; #else static int @@ -257,11 +265,13 @@ mci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) /* Figure out the transfer arguments */ cmdr = mci_encode_cmd(cmd, data, &error_flags); + mci_set_blklen(mci, data->blocksize); + /* For multi blocks read/write, set the block register */ if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) || (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) - writel(data->blocks | MMCI_BF(BLKLEN, mmc->read_bl_len), - &mci->blkr); + writel(data->blocks | MMCI_BF(BLKLEN, data->blocksize), + &mci->blkr); /* Send the command */ writel(cmd->cmdarg, &mci->argr); @@ -295,17 +305,15 @@ mci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) if (data) { u32 word_count, block_count; u32* ioptr; - u32 sys_blocksize, dummy, i; + u32 i; u32 (*mci_data_op) (atmel_mci_t *mci, u32* data, u32 error_flags); if (data->flags & MMC_DATA_READ) { mci_data_op = mci_data_read; - sys_blocksize = mmc->read_bl_len; ioptr = (u32*)data->dest; } else { mci_data_op = mci_data_write; - sys_blocksize = mmc->write_bl_len; ioptr = (u32*)data->src; } @@ -328,16 +336,6 @@ mci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) 1, cnt, 0); } #endif -#ifdef DEBUG - if (!status && word_count < (sys_blocksize / 4)) - printf("filling rest of block...\n"); -#endif - /* fill the rest of a full block */ - while (!status && word_count < (sys_blocksize / 4)) { - status = mci_data_op(mci, &dummy, - error_flags); - word_count++; - } if (status) { dump_cmd(cmdr, cmd->cmdarg, status, "Data Transfer Failed"); diff --git a/drivers/mmc/meson_gx_mmc.c b/drivers/mmc/meson_gx_mmc.c index 4652fab45e..a2cd5d3a44 100644 --- a/drivers/mmc/meson_gx_mmc.c +++ b/drivers/mmc/meson_gx_mmc.c @@ -250,7 +250,7 @@ static int meson_mmc_probe(struct udevice *dev) mmc->priv = pdata; upriv->mmc = mmc; - mmc_set_clock(mmc, cfg->f_min); + mmc_set_clock(mmc, cfg->f_min, false); /* reset all status bits */ meson_write(mmc, STATUS_MASK, MESON_SD_EMMC_STATUS); diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c index 5dda20cda5..26c6ab7ad1 100644 --- a/drivers/mmc/mmc-uclass.c +++ b/drivers/mmc/mmc-uclass.c @@ -10,7 +10,6 @@ #include <dm.h> #include <dm/device-internal.h> #include <dm/lists.h> -#include <dm/root.h> #include "mmc_private.h" DECLARE_GLOBAL_DATA_PTR; @@ -51,6 +50,35 @@ int mmc_set_ios(struct mmc *mmc) return dm_mmc_set_ios(mmc->dev); } +void dm_mmc_send_init_stream(struct udevice *dev) +{ + struct dm_mmc_ops *ops = mmc_get_ops(dev); + + if (ops->send_init_stream) + ops->send_init_stream(dev); +} + +void mmc_send_init_stream(struct mmc *mmc) +{ + dm_mmc_send_init_stream(mmc->dev); +} + +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) +int dm_mmc_wait_dat0(struct udevice *dev, int state, int timeout) +{ + struct dm_mmc_ops *ops = mmc_get_ops(dev); + + if (!ops->wait_dat0) + return -ENOSYS; + return ops->wait_dat0(dev, state, timeout); +} + +int mmc_wait_dat0(struct mmc *mmc, int state, int timeout) +{ + return dm_mmc_wait_dat0(mmc->dev, state, timeout); +} +#endif + int dm_mmc_get_wp(struct udevice *dev) { struct dm_mmc_ops *ops = mmc_get_ops(dev); @@ -79,6 +107,73 @@ int mmc_getcd(struct mmc *mmc) return dm_mmc_get_cd(mmc->dev); } +#ifdef MMC_SUPPORTS_TUNING +int dm_mmc_execute_tuning(struct udevice *dev, uint opcode) +{ + struct dm_mmc_ops *ops = mmc_get_ops(dev); + + if (!ops->execute_tuning) + return -ENOSYS; + return ops->execute_tuning(dev, opcode); +} + +int mmc_execute_tuning(struct mmc *mmc, uint opcode) +{ + return dm_mmc_execute_tuning(mmc->dev, opcode); +} +#endif + +int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg) +{ + int val; + + val = dev_read_u32_default(dev, "bus-width", 1); + + switch (val) { + case 0x8: + cfg->host_caps |= MMC_MODE_8BIT; + /* fall through */ + case 0x4: + cfg->host_caps |= MMC_MODE_4BIT; + /* fall through */ + case 0x1: + cfg->host_caps |= MMC_MODE_1BIT; + break; + default: + debug("warning: %s invalid bus-width property. using 1-bit\n", + dev_read_name(dev)); + cfg->host_caps |= MMC_MODE_1BIT; + break; + } + + cfg->f_max = dev_read_u32_default(dev, "max-frequency", 52000000); + + if (dev_read_bool(dev, "cap-sd-highspeed")) + cfg->host_caps |= MMC_CAP(SD_HS); + if (dev_read_bool(dev, "cap-mmc-highspeed")) + cfg->host_caps |= MMC_CAP(MMC_HS); + if (dev_read_bool(dev, "sd-uhs-sdr12")) + cfg->host_caps |= MMC_CAP(UHS_SDR12); + if (dev_read_bool(dev, "sd-uhs-sdr25")) + cfg->host_caps |= MMC_CAP(UHS_SDR25); + if (dev_read_bool(dev, "sd-uhs-sdr50")) + cfg->host_caps |= MMC_CAP(UHS_SDR50); + if (dev_read_bool(dev, "sd-uhs-sdr104")) + cfg->host_caps |= MMC_CAP(UHS_SDR104); + if (dev_read_bool(dev, "sd-uhs-ddr50")) + cfg->host_caps |= MMC_CAP(UHS_DDR50); + if (dev_read_bool(dev, "mmc-ddr-1_8v")) + cfg->host_caps |= MMC_CAP(MMC_DDR_52); + if (dev_read_bool(dev, "mmc-ddr-1_2v")) + cfg->host_caps |= MMC_CAP(MMC_DDR_52); + if (dev_read_bool(dev, "mmc-hs200-1_8v")) + cfg->host_caps |= MMC_CAP(MMC_HS_200); + if (dev_read_bool(dev, "mmc-hs200-1_2v")) + cfg->host_caps |= MMC_CAP(MMC_HS_200); + + return 0; +} + struct mmc *mmc_get_mmc_dev(struct udevice *dev) { struct mmc_uclass_priv *upriv; @@ -275,7 +370,7 @@ static int mmc_blk_probe(struct udevice *dev) static const struct blk_ops mmc_blk_ops = { .read = mmc_bread, -#ifndef CONFIG_SPL_BUILD +#if CONFIG_IS_ENABLED(MMC_WRITE) .write = mmc_bwrite, .erase = mmc_berase, #endif diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 38d2e07dd5..53c819187e 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -22,13 +22,9 @@ #include <div64.h> #include "mmc_private.h" -static const unsigned int sd_au_size[] = { - 0, SZ_16K / 512, SZ_32K / 512, - SZ_64K / 512, SZ_128K / 512, SZ_256K / 512, - SZ_512K / 512, SZ_1M / 512, SZ_2M / 512, - SZ_4M / 512, SZ_8M / 512, (SZ_8M + SZ_4M) / 512, - SZ_16M / 512, (SZ_16M + SZ_8M) / 512, SZ_32M / 512, SZ_64M / 512, -}; +static int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage); +static int mmc_power_cycle(struct mmc *mmc); +static int mmc_select_mode_and_width(struct mmc *mmc, uint card_caps); #if CONFIG_IS_ENABLED(MMC_TINY) static struct mmc mmc_static; @@ -54,6 +50,14 @@ struct blk_desc *mmc_get_blk_desc(struct mmc *mmc) #endif #if !CONFIG_IS_ENABLED(DM_MMC) + +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) +static int mmc_wait_dat0(struct mmc *mmc, int state, int timeout) +{ + return -ENOSYS; +} +#endif + __weak int board_mmc_getwp(struct mmc *mmc) { return -1; @@ -149,6 +153,71 @@ void mmc_trace_state(struct mmc *mmc, struct mmc_cmd *cmd) } #endif +#if CONFIG_IS_ENABLED(MMC_VERBOSE) || defined(DEBUG) +const char *mmc_mode_name(enum bus_mode mode) +{ + static const char *const names[] = { + [MMC_LEGACY] = "MMC legacy", + [SD_LEGACY] = "SD Legacy", + [MMC_HS] = "MMC High Speed (26MHz)", + [SD_HS] = "SD High Speed (50MHz)", + [UHS_SDR12] = "UHS SDR12 (25MHz)", + [UHS_SDR25] = "UHS SDR25 (50MHz)", + [UHS_SDR50] = "UHS SDR50 (100MHz)", + [UHS_SDR104] = "UHS SDR104 (208MHz)", + [UHS_DDR50] = "UHS DDR50 (50MHz)", + [MMC_HS_52] = "MMC High Speed (52MHz)", + [MMC_DDR_52] = "MMC DDR52 (52MHz)", + [MMC_HS_200] = "HS200 (200MHz)", + }; + + if (mode >= MMC_MODES_END) + return "Unknown mode"; + else + return names[mode]; +} +#endif + +static uint mmc_mode2freq(struct mmc *mmc, enum bus_mode mode) +{ + static const int freqs[] = { + [SD_LEGACY] = 25000000, + [MMC_HS] = 26000000, + [SD_HS] = 50000000, +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) + [UHS_SDR12] = 25000000, + [UHS_SDR25] = 50000000, + [UHS_SDR50] = 100000000, + [UHS_DDR50] = 50000000, +#ifdef MMC_SUPPORTS_TUNING + [UHS_SDR104] = 208000000, +#endif +#endif + [MMC_HS_52] = 52000000, + [MMC_DDR_52] = 52000000, +#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) + [MMC_HS_200] = 200000000, +#endif + }; + + if (mode == MMC_LEGACY) + return mmc->legacy_speed; + else if (mode >= MMC_MODES_END) + return 0; + else + return freqs[mode]; +} + +static int mmc_select_mode(struct mmc *mmc, enum bus_mode mode) +{ + mmc->selected_mode = mode; + mmc->tran_speed = mmc_mode2freq(mmc, mode); + mmc->ddr_mode = mmc_is_mode_ddr(mode); + debug("selecting mode %s (freq : %d MHz)\n", mmc_mode_name(mode), + mmc->tran_speed / 1000000); + return 0; +} + #if !CONFIG_IS_ENABLED(DM_MMC) int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) { @@ -179,10 +248,11 @@ int mmc_send_status(struct mmc *mmc, int timeout) (cmd.response[0] & MMC_STATUS_CURR_STATE) != MMC_STATE_PRG) break; - else if (cmd.response[0] & MMC_STATUS_MASK) { + + if (cmd.response[0] & MMC_STATUS_MASK) { #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) - printf("Status Error: 0x%08X\n", - cmd.response[0]); + pr_err("Status Error: 0x%08X\n", + cmd.response[0]); #endif return -ECOMM; } @@ -198,7 +268,7 @@ int mmc_send_status(struct mmc *mmc, int timeout) mmc_trace_state(mmc, &cmd); if (timeout <= 0) { #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) - printf("Timeout waiting card ready\n"); + pr_err("Timeout waiting card ready\n"); #endif return -ETIMEDOUT; } @@ -209,6 +279,7 @@ int mmc_send_status(struct mmc *mmc, int timeout) int mmc_set_blocklen(struct mmc *mmc, int len) { struct mmc_cmd cmd; + int err; if (mmc->ddr_mode) return 0; @@ -217,8 +288,95 @@ int mmc_set_blocklen(struct mmc *mmc, int len) cmd.resp_type = MMC_RSP_R1; cmd.cmdarg = len; - return mmc_send_cmd(mmc, &cmd, NULL); + err = mmc_send_cmd(mmc, &cmd, NULL); + +#ifdef CONFIG_MMC_QUIRKS + if (err && (mmc->quirks & MMC_QUIRK_RETRY_SET_BLOCKLEN)) { + int retries = 4; + /* + * It has been seen that SET_BLOCKLEN may fail on the first + * attempt, let's try a few more time + */ + do { + err = mmc_send_cmd(mmc, &cmd, NULL); + if (!err) + break; + } while (retries--); + } +#endif + + return err; +} + +#ifdef MMC_SUPPORTS_TUNING +static const u8 tuning_blk_pattern_4bit[] = { + 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc, + 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef, + 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb, + 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef, + 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c, + 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee, + 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff, + 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde, +}; + +static const u8 tuning_blk_pattern_8bit[] = { + 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, + 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc, + 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff, + 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff, + 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd, + 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb, + 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff, + 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff, + 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, + 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, + 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, + 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, + 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, + 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, + 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, + 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, +}; + +int mmc_send_tuning(struct mmc *mmc, u32 opcode, int *cmd_error) +{ + struct mmc_cmd cmd; + struct mmc_data data; + const u8 *tuning_block_pattern; + int size, err; + + if (mmc->bus_width == 8) { + tuning_block_pattern = tuning_blk_pattern_8bit; + size = sizeof(tuning_blk_pattern_8bit); + } else if (mmc->bus_width == 4) { + tuning_block_pattern = tuning_blk_pattern_4bit; + size = sizeof(tuning_blk_pattern_4bit); + } else { + return -EINVAL; + } + + ALLOC_CACHE_ALIGN_BUFFER(u8, data_buf, size); + + cmd.cmdidx = opcode; + cmd.cmdarg = 0; + cmd.resp_type = MMC_RSP_R1; + + data.dest = (void *)data_buf; + data.blocks = 1; + data.blocksize = size; + data.flags = MMC_DATA_READ; + + err = mmc_send_cmd(mmc, &cmd, &data); + if (err) + return err; + + if (memcmp(data_buf, tuning_block_pattern, size)) + return -EIO; + + return 0; } +#endif static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start, lbaint_t blkcnt) @@ -252,7 +410,7 @@ static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start, cmd.resp_type = MMC_RSP_R1b; if (mmc_send_cmd(mmc, &cmd, NULL)) { #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) - printf("mmc fail to send stop cmd\n"); + pr_err("mmc fail to send stop cmd\n"); #endif return 0; } @@ -292,8 +450,8 @@ ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt, if ((start + blkcnt) > block_dev->lba) { #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) - printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n", - start + blkcnt, block_dev->lba); + pr_err("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n", + start + blkcnt, block_dev->lba); #endif return 0; } @@ -339,7 +497,69 @@ static int mmc_go_idle(struct mmc *mmc) return 0; } -static int sd_send_op_cond(struct mmc *mmc) +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) +static int mmc_switch_voltage(struct mmc *mmc, int signal_voltage) +{ + struct mmc_cmd cmd; + int err = 0; + + /* + * Send CMD11 only if the request is to switch the card to + * 1.8V signalling. + */ + if (signal_voltage == MMC_SIGNAL_VOLTAGE_330) + return mmc_set_signal_voltage(mmc, signal_voltage); + + cmd.cmdidx = SD_CMD_SWITCH_UHS18V; + cmd.cmdarg = 0; + cmd.resp_type = MMC_RSP_R1; + + err = mmc_send_cmd(mmc, &cmd, NULL); + if (err) + return err; + + if (!mmc_host_is_spi(mmc) && (cmd.response[0] & MMC_STATUS_ERROR)) + return -EIO; + + /* + * The card should drive cmd and dat[0:3] low immediately + * after the response of cmd11, but wait 100 us to be sure + */ + err = mmc_wait_dat0(mmc, 0, 100); + if (err == -ENOSYS) + udelay(100); + else if (err) + return -ETIMEDOUT; + + /* + * During a signal voltage level switch, the clock must be gated + * for 5 ms according to the SD spec + */ + mmc_set_clock(mmc, mmc->clock, true); + + err = mmc_set_signal_voltage(mmc, signal_voltage); + if (err) + return err; + + /* Keep clock gated for at least 10 ms, though spec only says 5 ms */ + mdelay(10); + mmc_set_clock(mmc, mmc->clock, false); + + /* + * Failure to switch is indicated by the card holding + * dat[0:3] low. Wait for at least 1 ms according to spec + */ + err = mmc_wait_dat0(mmc, 1, 1000); + if (err == -ENOSYS) + udelay(1000); + else if (err) + return -ETIMEDOUT; + + return 0; +} +#endif + +static int sd_send_op_cond(struct mmc *mmc, bool uhs_en) { int timeout = 1000; int err; @@ -371,6 +591,9 @@ static int sd_send_op_cond(struct mmc *mmc) if (mmc->version == SD_VERSION_2) cmd.cmdarg |= OCR_HCS; + if (uhs_en) + cmd.cmdarg |= OCR_S18R; + err = mmc_send_cmd(mmc, &cmd, NULL); if (err) @@ -401,6 +624,15 @@ static int sd_send_op_cond(struct mmc *mmc) mmc->ocr = cmd.response[0]; +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) + if (uhs_en && !(mmc_host_is_spi(mmc)) && (cmd.response[0] & 0x41000000) + == 0x41000000) { + err = mmc_switch_voltage(mmc, MMC_SIGNAL_VOLTAGE_180); + if (err) + return err; + } +#endif + mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); mmc->rca = 0; @@ -546,53 +778,86 @@ int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value) } -static int mmc_change_freq(struct mmc *mmc) +static int mmc_set_card_speed(struct mmc *mmc, enum bus_mode mode) { - ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); - char cardtype; int err; + int speed_bits; - mmc->card_caps = 0; + ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN); - if (mmc_host_is_spi(mmc)) - return 0; + switch (mode) { + case MMC_HS: + case MMC_HS_52: + case MMC_DDR_52: + speed_bits = EXT_CSD_TIMING_HS; + break; +#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) + case MMC_HS_200: + speed_bits = EXT_CSD_TIMING_HS200; + break; +#endif + case MMC_LEGACY: + speed_bits = EXT_CSD_TIMING_LEGACY; + break; + default: + return -EINVAL; + } + err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, + speed_bits); + if (err) + return err; - /* Only version 4 supports high-speed */ - if (mmc->version < MMC_VERSION_4) - return 0; + if ((mode == MMC_HS) || (mode == MMC_HS_52)) { + /* Now check to see that it worked */ + err = mmc_send_ext_csd(mmc, test_csd); + if (err) + return err; - mmc->card_caps |= MMC_MODE_4BIT | MMC_MODE_8BIT; + /* No high-speed support */ + if (!test_csd[EXT_CSD_HS_TIMING]) + return -ENOTSUPP; + } - err = mmc_send_ext_csd(mmc, ext_csd); + return 0; +} - if (err) - return err; +static int mmc_get_capabilities(struct mmc *mmc) +{ + u8 *ext_csd = mmc->ext_csd; + char cardtype; - cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf; + mmc->card_caps = MMC_MODE_1BIT | MMC_CAP(MMC_LEGACY); - err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); + if (mmc_host_is_spi(mmc)) + return 0; - if (err) - return err; + /* Only version 4 supports high-speed */ + if (mmc->version < MMC_VERSION_4) + return 0; - /* Now check to see that it worked */ - err = mmc_send_ext_csd(mmc, ext_csd); + if (!ext_csd) { + pr_err("No ext_csd found!\n"); /* this should enver happen */ + return -ENOTSUPP; + } - if (err) - return err; + mmc->card_caps |= MMC_MODE_4BIT | MMC_MODE_8BIT; - /* No high-speed support */ - if (!ext_csd[EXT_CSD_HS_TIMING]) - return 0; + cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0x3f; + mmc->cardtype = cardtype; - /* High Speed is set, there are two types: 52MHz and 26MHz */ +#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) + if (cardtype & (EXT_CSD_CARD_TYPE_HS200_1_2V | + EXT_CSD_CARD_TYPE_HS200_1_8V)) { + mmc->card_caps |= MMC_MODE_HS200; + } +#endif if (cardtype & EXT_CSD_CARD_TYPE_52) { - if (cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V) + if (cardtype & EXT_CSD_CARD_TYPE_DDR_52) mmc->card_caps |= MMC_MODE_DDR_52MHz; - mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; - } else { - mmc->card_caps |= MMC_MODE_HS; + mmc->card_caps |= MMC_MODE_HS_52MHz; } + if (cardtype & EXT_CSD_CARD_TYPE_26) + mmc->card_caps |= MMC_MODE_HS; return 0; } @@ -625,10 +890,46 @@ static int mmc_set_capacity(struct mmc *mmc, int part_num) return 0; } +#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) +static int mmc_boot_part_access_chk(struct mmc *mmc, unsigned int part_num) +{ + int forbidden = 0; + bool change = false; + + if (part_num & PART_ACCESS_MASK) + forbidden = MMC_CAP(MMC_HS_200); + + if (MMC_CAP(mmc->selected_mode) & forbidden) { + debug("selected mode (%s) is forbidden for part %d\n", + mmc_mode_name(mmc->selected_mode), part_num); + change = true; + } else if (mmc->selected_mode != mmc->best_mode) { + debug("selected mode is not optimal\n"); + change = true; + } + + if (change) + return mmc_select_mode_and_width(mmc, + mmc->card_caps & ~forbidden); + + return 0; +} +#else +static inline int mmc_boot_part_access_chk(struct mmc *mmc, + unsigned int part_num) +{ + return 0; +} +#endif + int mmc_switch_part(struct mmc *mmc, unsigned int part_num) { int ret; + ret = mmc_boot_part_access_chk(mmc, part_num); + if (ret) + return ret; + ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, (mmc->part_config & ~PART_ACCESS_MASK) | (part_num & PART_ACCESS_MASK)); @@ -645,6 +946,7 @@ int mmc_switch_part(struct mmc *mmc, unsigned int part_num) return ret; } +#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING) int mmc_hwpart_config(struct mmc *mmc, const struct mmc_hwpart_conf *conf, enum mmc_hwpart_conf_mode mode) @@ -663,17 +965,17 @@ int mmc_hwpart_config(struct mmc *mmc, return -EINVAL; if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4_41)) { - printf("eMMC >= 4.4 required for enhanced user data area\n"); + pr_err("eMMC >= 4.4 required for enhanced user data area\n"); return -EMEDIUMTYPE; } if (!(mmc->part_support & PART_SUPPORT)) { - printf("Card does not support partitioning\n"); + pr_err("Card does not support partitioning\n"); return -EMEDIUMTYPE; } if (!mmc->hc_wp_grp_size) { - printf("Card does not define HC WP group size\n"); + pr_err("Card does not define HC WP group size\n"); return -EMEDIUMTYPE; } @@ -681,7 +983,7 @@ int mmc_hwpart_config(struct mmc *mmc, if (conf->user.enh_size) { if (conf->user.enh_size % mmc->hc_wp_grp_size || conf->user.enh_start % mmc->hc_wp_grp_size) { - printf("User data enhanced area not HC WP group " + pr_err("User data enhanced area not HC WP group " "size aligned\n"); return -EINVAL; } @@ -700,7 +1002,7 @@ int mmc_hwpart_config(struct mmc *mmc, for (pidx = 0; pidx < 4; pidx++) { if (conf->gp_part[pidx].size % mmc->hc_wp_grp_size) { - printf("GP%i partition not HC WP group size " + pr_err("GP%i partition not HC WP group size " "aligned\n", pidx+1); return -EINVAL; } @@ -712,7 +1014,7 @@ int mmc_hwpart_config(struct mmc *mmc, } if (part_attrs && ! (mmc->part_support & ENHNCD_SUPPORT)) { - printf("Card does not support enhanced attribute\n"); + pr_err("Card does not support enhanced attribute\n"); return -EMEDIUMTYPE; } @@ -725,7 +1027,7 @@ int mmc_hwpart_config(struct mmc *mmc, (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+1] << 8) + ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT]; if (tot_enh_size_mult > max_enh_size_mult) { - printf("Total enhanced size exceeds maximum (%u > %u)\n", + pr_err("Total enhanced size exceeds maximum (%u > %u)\n", tot_enh_size_mult, max_enh_size_mult); return -EMEDIUMTYPE; } @@ -759,7 +1061,7 @@ int mmc_hwpart_config(struct mmc *mmc, if (ext_csd[EXT_CSD_PARTITION_SETTING] & EXT_CSD_PARTITION_SETTING_COMPLETED) { - printf("Card already partitioned\n"); + pr_err("Card already partitioned\n"); return -EPERM; } @@ -838,6 +1140,7 @@ int mmc_hwpart_config(struct mmc *mmc, return 0; } +#endif #if !CONFIG_IS_ENABLED(DM_MMC) int mmc_getcd(struct mmc *mmc) @@ -878,16 +1181,19 @@ static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp) } -static int sd_change_freq(struct mmc *mmc) +static int sd_get_capabilities(struct mmc *mmc) { int err; struct mmc_cmd cmd; - ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2); - ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16); + ALLOC_CACHE_ALIGN_BUFFER(__be32, scr, 2); + ALLOC_CACHE_ALIGN_BUFFER(__be32, switch_status, 16); struct mmc_data data; int timeout; +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) + u32 sd3_bus_mode; +#endif - mmc->card_caps = 0; + mmc->card_caps = MMC_MODE_1BIT | MMC_CAP(SD_LEGACY); if (mmc_host_is_spi(mmc)) return 0; @@ -964,32 +1270,115 @@ retry_scr: } /* If high-speed isn't supported, we return */ - if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)) - return 0; + if (__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED) + mmc->card_caps |= MMC_CAP(SD_HS); - /* - * If the host doesn't support SD_HIGHSPEED, do not switch card to - * HIGHSPEED mode even if the card support SD_HIGHSPPED. - * This can avoid furthur problem when the card runs in different - * mode between the host. - */ - if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) && - (mmc->cfg->host_caps & MMC_MODE_HS))) +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) + /* Version before 3.0 don't support UHS modes */ + if (mmc->version < SD_VERSION_3) return 0; - err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status); + sd3_bus_mode = __be32_to_cpu(switch_status[3]) >> 16 & 0x1f; + if (sd3_bus_mode & SD_MODE_UHS_SDR104) + mmc->card_caps |= MMC_CAP(UHS_SDR104); + if (sd3_bus_mode & SD_MODE_UHS_SDR50) + mmc->card_caps |= MMC_CAP(UHS_SDR50); + if (sd3_bus_mode & SD_MODE_UHS_SDR25) + mmc->card_caps |= MMC_CAP(UHS_SDR25); + if (sd3_bus_mode & SD_MODE_UHS_SDR12) + mmc->card_caps |= MMC_CAP(UHS_SDR12); + if (sd3_bus_mode & SD_MODE_UHS_DDR50) + mmc->card_caps |= MMC_CAP(UHS_DDR50); +#endif + + return 0; +} + +static int sd_set_card_speed(struct mmc *mmc, enum bus_mode mode) +{ + int err; + + ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16); + int speed; + + switch (mode) { + case SD_LEGACY: + speed = UHS_SDR12_BUS_SPEED; + break; + case SD_HS: + speed = HIGH_SPEED_BUS_SPEED; + break; +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) + case UHS_SDR12: + speed = UHS_SDR12_BUS_SPEED; + break; + case UHS_SDR25: + speed = UHS_SDR25_BUS_SPEED; + break; + case UHS_SDR50: + speed = UHS_SDR50_BUS_SPEED; + break; + case UHS_DDR50: + speed = UHS_DDR50_BUS_SPEED; + break; + case UHS_SDR104: + speed = UHS_SDR104_BUS_SPEED; + break; +#endif + default: + return -EINVAL; + } + + err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, speed, (u8 *)switch_status); + if (err) + return err; + if ((__be32_to_cpu(switch_status[4]) >> 24) != speed) + return -ENOTSUPP; + + return 0; +} + +int sd_select_bus_width(struct mmc *mmc, int w) +{ + int err; + struct mmc_cmd cmd; + + if ((w != 4) && (w != 1)) + return -EINVAL; + + cmd.cmdidx = MMC_CMD_APP_CMD; + cmd.resp_type = MMC_RSP_R1; + cmd.cmdarg = mmc->rca << 16; + + err = mmc_send_cmd(mmc, &cmd, NULL); if (err) return err; - if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000) - mmc->card_caps |= MMC_MODE_HS; + cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; + cmd.resp_type = MMC_RSP_R1; + if (w == 4) + cmd.cmdarg = 2; + else if (w == 1) + cmd.cmdarg = 0; + err = mmc_send_cmd(mmc, &cmd, NULL); + if (err) + return err; return 0; } +#if CONFIG_IS_ENABLED(MMC_WRITE) static int sd_read_ssr(struct mmc *mmc) { + static const unsigned int sd_au_size[] = { + 0, SZ_16K / 512, SZ_32K / 512, + SZ_64K / 512, SZ_128K / 512, SZ_256K / 512, + SZ_512K / 512, SZ_1M / 512, SZ_2M / 512, + SZ_4M / 512, SZ_8M / 512, (SZ_8M + SZ_4M) / 512, + SZ_16M / 512, (SZ_16M + SZ_8M) / 512, SZ_32M / 512, + SZ_64M / 512, + }; int err, i; struct mmc_cmd cmd; ALLOC_CACHE_ALIGN_BUFFER(uint, ssr, 16); @@ -1043,7 +1432,7 @@ retry_ssr: return 0; } - +#endif /* frequency bases */ /* divided by 10 to be nice to platforms without floating point */ static const int fbase[] = { @@ -1075,15 +1464,42 @@ static const u8 multipliers[] = { 80, }; +static inline int bus_width(uint cap) +{ + if (cap == MMC_MODE_8BIT) + return 8; + if (cap == MMC_MODE_4BIT) + return 4; + if (cap == MMC_MODE_1BIT) + return 1; + pr_warn("invalid bus witdh capability 0x%x\n", cap); + return 0; +} + #if !CONFIG_IS_ENABLED(DM_MMC) -static void mmc_set_ios(struct mmc *mmc) +#ifdef MMC_SUPPORTS_TUNING +static int mmc_execute_tuning(struct mmc *mmc, uint opcode) { + return -ENOTSUPP; +} +#endif + +static void mmc_send_init_stream(struct mmc *mmc) +{ +} + +static int mmc_set_ios(struct mmc *mmc) +{ + int ret = 0; + if (mmc->cfg->ops->set_ios) - mmc->cfg->ops->set_ios(mmc); + ret = mmc->cfg->ops->set_ios(mmc); + + return ret; } #endif -void mmc_set_clock(struct mmc *mmc, uint clock) +int mmc_set_clock(struct mmc *mmc, uint clock, bool disable) { if (clock > mmc->cfg->f_max) clock = mmc->cfg->f_max; @@ -1092,27 +1508,619 @@ void mmc_set_clock(struct mmc *mmc, uint clock) clock = mmc->cfg->f_min; mmc->clock = clock; + mmc->clk_disable = disable; - mmc_set_ios(mmc); + return mmc_set_ios(mmc); } -static void mmc_set_bus_width(struct mmc *mmc, uint width) +static int mmc_set_bus_width(struct mmc *mmc, uint width) { mmc->bus_width = width; - mmc_set_ios(mmc); + return mmc_set_ios(mmc); +} + +#if CONFIG_IS_ENABLED(MMC_VERBOSE) || defined(DEBUG) +/* + * helper function to display the capabilities in a human + * friendly manner. The capabilities include bus width and + * supported modes. + */ +void mmc_dump_capabilities(const char *text, uint caps) +{ + enum bus_mode mode; + + printf("%s: widths [", text); + if (caps & MMC_MODE_8BIT) + printf("8, "); + if (caps & MMC_MODE_4BIT) + printf("4, "); + if (caps & MMC_MODE_1BIT) + printf("1, "); + printf("\b\b] modes ["); + for (mode = MMC_LEGACY; mode < MMC_MODES_END; mode++) + if (MMC_CAP(mode) & caps) + printf("%s, ", mmc_mode_name(mode)); + printf("\b\b]\n"); +} +#endif + +struct mode_width_tuning { + enum bus_mode mode; + uint widths; +#ifdef MMC_SUPPORTS_TUNING + uint tuning; +#endif +}; + +#if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE) +int mmc_voltage_to_mv(enum mmc_voltage voltage) +{ + switch (voltage) { + case MMC_SIGNAL_VOLTAGE_000: return 0; + case MMC_SIGNAL_VOLTAGE_330: return 3300; + case MMC_SIGNAL_VOLTAGE_180: return 1800; + case MMC_SIGNAL_VOLTAGE_120: return 1200; + } + return -EINVAL; +} + +static int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage) +{ + int err; + + if (mmc->signal_voltage == signal_voltage) + return 0; + + mmc->signal_voltage = signal_voltage; + err = mmc_set_ios(mmc); + if (err) + debug("unable to set voltage (err %d)\n", err); + + return err; +} +#else +static inline int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage) +{ + return 0; +} +#endif + +static const struct mode_width_tuning sd_modes_by_pref[] = { +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) +#ifdef MMC_SUPPORTS_TUNING + { + .mode = UHS_SDR104, + .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, + .tuning = MMC_CMD_SEND_TUNING_BLOCK + }, +#endif + { + .mode = UHS_SDR50, + .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, + }, + { + .mode = UHS_DDR50, + .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, + }, + { + .mode = UHS_SDR25, + .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, + }, +#endif + { + .mode = SD_HS, + .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, + }, +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) + { + .mode = UHS_SDR12, + .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, + }, +#endif + { + .mode = SD_LEGACY, + .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, + } +}; + +#define for_each_sd_mode_by_pref(caps, mwt) \ + for (mwt = sd_modes_by_pref;\ + mwt < sd_modes_by_pref + ARRAY_SIZE(sd_modes_by_pref);\ + mwt++) \ + if (caps & MMC_CAP(mwt->mode)) + +static int sd_select_mode_and_width(struct mmc *mmc, uint card_caps) +{ + int err; + uint widths[] = {MMC_MODE_4BIT, MMC_MODE_1BIT}; + const struct mode_width_tuning *mwt; +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) + bool uhs_en = (mmc->ocr & OCR_S18R) ? true : false; +#else + bool uhs_en = false; +#endif + uint caps; + +#ifdef DEBUG + mmc_dump_capabilities("sd card", card_caps); + mmc_dump_capabilities("host", mmc->host_caps); +#endif + + /* Restrict card's capabilities by what the host can do */ + caps = card_caps & mmc->host_caps; + + if (!uhs_en) + caps &= ~UHS_CAPS; + + for_each_sd_mode_by_pref(caps, mwt) { + uint *w; + + for (w = widths; w < widths + ARRAY_SIZE(widths); w++) { + if (*w & caps & mwt->widths) { + debug("trying mode %s width %d (at %d MHz)\n", + mmc_mode_name(mwt->mode), + bus_width(*w), + mmc_mode2freq(mmc, mwt->mode) / 1000000); + + /* configure the bus width (card + host) */ + err = sd_select_bus_width(mmc, bus_width(*w)); + if (err) + goto error; + mmc_set_bus_width(mmc, bus_width(*w)); + + /* configure the bus mode (card) */ + err = sd_set_card_speed(mmc, mwt->mode); + if (err) + goto error; + + /* configure the bus mode (host) */ + mmc_select_mode(mmc, mwt->mode); + mmc_set_clock(mmc, mmc->tran_speed, false); + +#ifdef MMC_SUPPORTS_TUNING + /* execute tuning if needed */ + if (mwt->tuning && !mmc_host_is_spi(mmc)) { + err = mmc_execute_tuning(mmc, + mwt->tuning); + if (err) { + debug("tuning failed\n"); + goto error; + } + } +#endif + +#if CONFIG_IS_ENABLED(MMC_WRITE) + err = sd_read_ssr(mmc); + if (!err) + pr_warn("unable to read ssr\n"); +#endif + if (!err) + return 0; + +error: + /* revert to a safer bus speed */ + mmc_select_mode(mmc, SD_LEGACY); + mmc_set_clock(mmc, mmc->tran_speed, false); + } + } + } + + printf("unable to select a mode\n"); + return -ENOTSUPP; +} + +/* + * read the compare the part of ext csd that is constant. + * This can be used to check that the transfer is working + * as expected. + */ +static int mmc_read_and_compare_ext_csd(struct mmc *mmc) +{ + int err; + const u8 *ext_csd = mmc->ext_csd; + ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN); + + if (mmc->version < MMC_VERSION_4) + return 0; + + err = mmc_send_ext_csd(mmc, test_csd); + if (err) + return err; + + /* Only compare read only fields */ + if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] + == test_csd[EXT_CSD_PARTITIONING_SUPPORT] && + ext_csd[EXT_CSD_HC_WP_GRP_SIZE] + == test_csd[EXT_CSD_HC_WP_GRP_SIZE] && + ext_csd[EXT_CSD_REV] + == test_csd[EXT_CSD_REV] && + ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] + == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] && + memcmp(&ext_csd[EXT_CSD_SEC_CNT], + &test_csd[EXT_CSD_SEC_CNT], 4) == 0) + return 0; + + return -EBADMSG; +} + +#if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE) +static int mmc_set_lowest_voltage(struct mmc *mmc, enum bus_mode mode, + uint32_t allowed_mask) +{ + u32 card_mask = 0; + + switch (mode) { + case MMC_HS_200: + if (mmc->cardtype & EXT_CSD_CARD_TYPE_HS200_1_8V) + card_mask |= MMC_SIGNAL_VOLTAGE_180; + if (mmc->cardtype & EXT_CSD_CARD_TYPE_HS200_1_2V) + card_mask |= MMC_SIGNAL_VOLTAGE_120; + break; + case MMC_DDR_52: + if (mmc->cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V) + card_mask |= MMC_SIGNAL_VOLTAGE_330 | + MMC_SIGNAL_VOLTAGE_180; + if (mmc->cardtype & EXT_CSD_CARD_TYPE_DDR_1_2V) + card_mask |= MMC_SIGNAL_VOLTAGE_120; + break; + default: + card_mask |= MMC_SIGNAL_VOLTAGE_330; + break; + } + + while (card_mask & allowed_mask) { + enum mmc_voltage best_match; + + best_match = 1 << (ffs(card_mask & allowed_mask) - 1); + if (!mmc_set_signal_voltage(mmc, best_match)) + return 0; + + allowed_mask &= ~best_match; + } + + return -ENOTSUPP; +} +#else +static inline int mmc_set_lowest_voltage(struct mmc *mmc, enum bus_mode mode, + uint32_t allowed_mask) +{ + return 0; +} +#endif + +static const struct mode_width_tuning mmc_modes_by_pref[] = { +#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) + { + .mode = MMC_HS_200, + .widths = MMC_MODE_8BIT | MMC_MODE_4BIT, + .tuning = MMC_CMD_SEND_TUNING_BLOCK_HS200 + }, +#endif + { + .mode = MMC_DDR_52, + .widths = MMC_MODE_8BIT | MMC_MODE_4BIT, + }, + { + .mode = MMC_HS_52, + .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT, + }, + { + .mode = MMC_HS, + .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT, + }, + { + .mode = MMC_LEGACY, + .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT, + } +}; + +#define for_each_mmc_mode_by_pref(caps, mwt) \ + for (mwt = mmc_modes_by_pref;\ + mwt < mmc_modes_by_pref + ARRAY_SIZE(mmc_modes_by_pref);\ + mwt++) \ + if (caps & MMC_CAP(mwt->mode)) + +static const struct ext_csd_bus_width { + uint cap; + bool is_ddr; + uint ext_csd_bits; +} ext_csd_bus_width[] = { + {MMC_MODE_8BIT, true, EXT_CSD_DDR_BUS_WIDTH_8}, + {MMC_MODE_4BIT, true, EXT_CSD_DDR_BUS_WIDTH_4}, + {MMC_MODE_8BIT, false, EXT_CSD_BUS_WIDTH_8}, + {MMC_MODE_4BIT, false, EXT_CSD_BUS_WIDTH_4}, + {MMC_MODE_1BIT, false, EXT_CSD_BUS_WIDTH_1}, +}; + +#define for_each_supported_width(caps, ddr, ecbv) \ + for (ecbv = ext_csd_bus_width;\ + ecbv < ext_csd_bus_width + ARRAY_SIZE(ext_csd_bus_width);\ + ecbv++) \ + if ((ddr == ecbv->is_ddr) && (caps & ecbv->cap)) + +static int mmc_select_mode_and_width(struct mmc *mmc, uint card_caps) +{ + int err; + const struct mode_width_tuning *mwt; + const struct ext_csd_bus_width *ecbw; + +#ifdef DEBUG + mmc_dump_capabilities("mmc", card_caps); + mmc_dump_capabilities("host", mmc->host_caps); +#endif + + /* Restrict card's capabilities by what the host can do */ + card_caps &= mmc->host_caps; + + /* Only version 4 of MMC supports wider bus widths */ + if (mmc->version < MMC_VERSION_4) + return 0; + + if (!mmc->ext_csd) { + debug("No ext_csd found!\n"); /* this should enver happen */ + return -ENOTSUPP; + } + + mmc_set_clock(mmc, mmc->legacy_speed, false); + + for_each_mmc_mode_by_pref(card_caps, mwt) { + for_each_supported_width(card_caps & mwt->widths, + mmc_is_mode_ddr(mwt->mode), ecbw) { + enum mmc_voltage old_voltage; + debug("trying mode %s width %d (at %d MHz)\n", + mmc_mode_name(mwt->mode), + bus_width(ecbw->cap), + mmc_mode2freq(mmc, mwt->mode) / 1000000); + old_voltage = mmc->signal_voltage; + err = mmc_set_lowest_voltage(mmc, mwt->mode, + MMC_ALL_SIGNAL_VOLTAGE); + if (err) + continue; + + /* configure the bus width (card + host) */ + err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_BUS_WIDTH, + ecbw->ext_csd_bits & ~EXT_CSD_DDR_FLAG); + if (err) + goto error; + mmc_set_bus_width(mmc, bus_width(ecbw->cap)); + + /* configure the bus speed (card) */ + err = mmc_set_card_speed(mmc, mwt->mode); + if (err) + goto error; + + /* + * configure the bus width AND the ddr mode (card) + * The host side will be taken care of in the next step + */ + if (ecbw->ext_csd_bits & EXT_CSD_DDR_FLAG) { + err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_BUS_WIDTH, + ecbw->ext_csd_bits); + if (err) + goto error; + } + + /* configure the bus mode (host) */ + mmc_select_mode(mmc, mwt->mode); + mmc_set_clock(mmc, mmc->tran_speed, false); +#ifdef MMC_SUPPORTS_TUNING + + /* execute tuning if needed */ + if (mwt->tuning) { + err = mmc_execute_tuning(mmc, mwt->tuning); + if (err) { + debug("tuning failed\n"); + goto error; + } + } +#endif + + /* do a transfer to check the configuration */ + err = mmc_read_and_compare_ext_csd(mmc); + if (!err) + return 0; +error: + mmc_set_signal_voltage(mmc, old_voltage); + /* if an error occured, revert to a safer bus mode */ + mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_1); + mmc_select_mode(mmc, MMC_LEGACY); + mmc_set_bus_width(mmc, 1); + } + } + + pr_err("unable to select a mode\n"); + + return -ENOTSUPP; +} + +static int mmc_startup_v4(struct mmc *mmc) +{ + int err, i; + u64 capacity; + bool has_parts = false; + bool part_completed; + static const u32 mmc_versions[] = { + MMC_VERSION_4, + MMC_VERSION_4_1, + MMC_VERSION_4_2, + MMC_VERSION_4_3, + MMC_VERSION_4_41, + MMC_VERSION_4_5, + MMC_VERSION_5_0, + MMC_VERSION_5_1 + }; + + ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); + + if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4)) + return 0; + + /* check ext_csd version and capacity */ + err = mmc_send_ext_csd(mmc, ext_csd); + if (err) + goto error; + + /* store the ext csd for future reference */ + if (!mmc->ext_csd) + mmc->ext_csd = malloc(MMC_MAX_BLOCK_LEN); + if (!mmc->ext_csd) + return -ENOMEM; + memcpy(mmc->ext_csd, ext_csd, MMC_MAX_BLOCK_LEN); + + if (ext_csd[EXT_CSD_REV] > ARRAY_SIZE(mmc_versions)) + return -EINVAL; + + mmc->version = mmc_versions[ext_csd[EXT_CSD_REV]]; + + if (mmc->version >= MMC_VERSION_4_2) { + /* + * According to the JEDEC Standard, the value of + * ext_csd's capacity is valid if the value is more + * than 2GB + */ + capacity = ext_csd[EXT_CSD_SEC_CNT] << 0 + | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 + | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 + | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; + capacity *= MMC_MAX_BLOCK_LEN; + if ((capacity >> 20) > 2 * 1024) + mmc->capacity_user = capacity; + } + + /* The partition data may be non-zero but it is only + * effective if PARTITION_SETTING_COMPLETED is set in + * EXT_CSD, so ignore any data if this bit is not set, + * except for enabling the high-capacity group size + * definition (see below). + */ + part_completed = !!(ext_csd[EXT_CSD_PARTITION_SETTING] & + EXT_CSD_PARTITION_SETTING_COMPLETED); + + /* store the partition info of emmc */ + mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT]; + if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) || + ext_csd[EXT_CSD_BOOT_MULT]) + mmc->part_config = ext_csd[EXT_CSD_PART_CONF]; + if (part_completed && + (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & ENHNCD_SUPPORT)) + mmc->part_attr = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE]; + + mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17; + + mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17; + + for (i = 0; i < 4; i++) { + int idx = EXT_CSD_GP_SIZE_MULT + i * 3; + uint mult = (ext_csd[idx + 2] << 16) + + (ext_csd[idx + 1] << 8) + ext_csd[idx]; + if (mult) + has_parts = true; + if (!part_completed) + continue; + mmc->capacity_gp[i] = mult; + mmc->capacity_gp[i] *= + ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; + mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; + mmc->capacity_gp[i] <<= 19; + } + +#ifndef CONFIG_SPL_BUILD + if (part_completed) { + mmc->enh_user_size = + (ext_csd[EXT_CSD_ENH_SIZE_MULT + 2] << 16) + + (ext_csd[EXT_CSD_ENH_SIZE_MULT + 1] << 8) + + ext_csd[EXT_CSD_ENH_SIZE_MULT]; + mmc->enh_user_size *= ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; + mmc->enh_user_size *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; + mmc->enh_user_size <<= 19; + mmc->enh_user_start = + (ext_csd[EXT_CSD_ENH_START_ADDR + 3] << 24) + + (ext_csd[EXT_CSD_ENH_START_ADDR + 2] << 16) + + (ext_csd[EXT_CSD_ENH_START_ADDR + 1] << 8) + + ext_csd[EXT_CSD_ENH_START_ADDR]; + if (mmc->high_capacity) + mmc->enh_user_start <<= 9; + } +#endif + + /* + * Host needs to enable ERASE_GRP_DEF bit if device is + * partitioned. This bit will be lost every time after a reset + * or power off. This will affect erase size. + */ + if (part_completed) + has_parts = true; + if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) && + (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) + has_parts = true; + if (has_parts) { + err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_ERASE_GROUP_DEF, 1); + + if (err) + goto error; + + ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1; + } + + if (ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01) { +#if CONFIG_IS_ENABLED(MMC_WRITE) + /* Read out group size from ext_csd */ + mmc->erase_grp_size = + ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024; +#endif + /* + * if high capacity and partition setting completed + * SEC_COUNT is valid even if it is smaller than 2 GiB + * JEDEC Standard JESD84-B45, 6.2.4 + */ + if (mmc->high_capacity && part_completed) { + capacity = (ext_csd[EXT_CSD_SEC_CNT]) | + (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) | + (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) | + (ext_csd[EXT_CSD_SEC_CNT + 3] << 24); + capacity *= MMC_MAX_BLOCK_LEN; + mmc->capacity_user = capacity; + } + } +#if CONFIG_IS_ENABLED(MMC_WRITE) + else { + /* Calculate the group size from the csd value. */ + int erase_gsz, erase_gmul; + + erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10; + erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5; + mmc->erase_grp_size = (erase_gsz + 1) + * (erase_gmul + 1); + } +#endif +#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING) + mmc->hc_wp_grp_size = 1024 + * ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] + * ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; +#endif + + mmc->wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET]; + + return 0; +error: + if (mmc->ext_csd) { + free(mmc->ext_csd); + mmc->ext_csd = NULL; + } + return err; } static int mmc_startup(struct mmc *mmc) { int err, i; uint mult, freq; - u64 cmult, csize, capacity; + u64 cmult, csize; struct mmc_cmd cmd; - ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); - ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN); - bool has_parts = false; - bool part_completed; struct blk_desc *bdesc; #ifdef CONFIG_MMC_SPI_CRC_ON @@ -1121,7 +2129,6 @@ static int mmc_startup(struct mmc *mmc) cmd.resp_type = MMC_RSP_R1; cmd.cmdarg = 1; err = mmc_send_cmd(mmc, &cmd, NULL); - if (err) return err; } @@ -1135,6 +2142,21 @@ static int mmc_startup(struct mmc *mmc) err = mmc_send_cmd(mmc, &cmd, NULL); +#ifdef CONFIG_MMC_QUIRKS + if (err && (mmc->quirks & MMC_QUIRK_RETRY_SEND_CID)) { + int retries = 4; + /* + * It has been seen that SEND_CID may fail on the first + * attempt, let's try a few more time + */ + do { + err = mmc_send_cmd(mmc, &cmd, NULL); + if (!err) + break; + } while (retries--); + } +#endif + if (err) return err; @@ -1203,15 +2225,18 @@ static int mmc_startup(struct mmc *mmc) freq = fbase[(cmd.response[0] & 0x7)]; mult = multipliers[((cmd.response[0] >> 3) & 0xf)]; - mmc->tran_speed = freq * mult; + mmc->legacy_speed = freq * mult; + mmc_select_mode(mmc, MMC_LEGACY); mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1); mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf); +#if CONFIG_IS_ENABLED(MMC_WRITE) if (IS_SD(mmc)) mmc->write_bl_len = mmc->read_bl_len; else mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf); +#endif if (mmc->high_capacity) { csize = (mmc->csd[1] & 0x3f) << 16 @@ -1233,15 +2258,17 @@ static int mmc_startup(struct mmc *mmc) if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN) mmc->read_bl_len = MMC_MAX_BLOCK_LEN; +#if CONFIG_IS_ENABLED(MMC_WRITE) if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN) mmc->write_bl_len = MMC_MAX_BLOCK_LEN; +#endif if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) { cmd.cmdidx = MMC_CMD_SET_DSR; cmd.cmdarg = (mmc->dsr & 0xffff) << 16; cmd.resp_type = MMC_RSP_NONE; if (mmc_send_cmd(mmc, &cmd, NULL)) - printf("MMC: SET_DSR failed\n"); + pr_warn("MMC: SET_DSR failed\n"); } /* Select the card, and put it into Transfer Mode */ @@ -1258,299 +2285,42 @@ static int mmc_startup(struct mmc *mmc) /* * For SD, its erase group is always one sector */ +#if CONFIG_IS_ENABLED(MMC_WRITE) mmc->erase_grp_size = 1; +#endif mmc->part_config = MMCPART_NOAVAILABLE; - if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) { - /* check ext_csd version and capacity */ - err = mmc_send_ext_csd(mmc, ext_csd); - if (err) - return err; - if (ext_csd[EXT_CSD_REV] >= 2) { - /* - * According to the JEDEC Standard, the value of - * ext_csd's capacity is valid if the value is more - * than 2GB - */ - capacity = ext_csd[EXT_CSD_SEC_CNT] << 0 - | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 - | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 - | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; - capacity *= MMC_MAX_BLOCK_LEN; - if ((capacity >> 20) > 2 * 1024) - mmc->capacity_user = capacity; - } - switch (ext_csd[EXT_CSD_REV]) { - case 1: - mmc->version = MMC_VERSION_4_1; - break; - case 2: - mmc->version = MMC_VERSION_4_2; - break; - case 3: - mmc->version = MMC_VERSION_4_3; - break; - case 5: - mmc->version = MMC_VERSION_4_41; - break; - case 6: - mmc->version = MMC_VERSION_4_5; - break; - case 7: - mmc->version = MMC_VERSION_5_0; - break; - case 8: - mmc->version = MMC_VERSION_5_1; - break; - } - - /* The partition data may be non-zero but it is only - * effective if PARTITION_SETTING_COMPLETED is set in - * EXT_CSD, so ignore any data if this bit is not set, - * except for enabling the high-capacity group size - * definition (see below). */ - part_completed = !!(ext_csd[EXT_CSD_PARTITION_SETTING] & - EXT_CSD_PARTITION_SETTING_COMPLETED); - - /* store the partition info of emmc */ - mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT]; - if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) || - ext_csd[EXT_CSD_BOOT_MULT]) - mmc->part_config = ext_csd[EXT_CSD_PART_CONF]; - if (part_completed && - (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & ENHNCD_SUPPORT)) - mmc->part_attr = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE]; - - mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17; - - mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17; - - for (i = 0; i < 4; i++) { - int idx = EXT_CSD_GP_SIZE_MULT + i * 3; - uint mult = (ext_csd[idx + 2] << 16) + - (ext_csd[idx + 1] << 8) + ext_csd[idx]; - if (mult) - has_parts = true; - if (!part_completed) - continue; - mmc->capacity_gp[i] = mult; - mmc->capacity_gp[i] *= - ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; - mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; - mmc->capacity_gp[i] <<= 19; - } - - if (part_completed) { - mmc->enh_user_size = - (ext_csd[EXT_CSD_ENH_SIZE_MULT+2] << 16) + - (ext_csd[EXT_CSD_ENH_SIZE_MULT+1] << 8) + - ext_csd[EXT_CSD_ENH_SIZE_MULT]; - mmc->enh_user_size *= ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; - mmc->enh_user_size *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; - mmc->enh_user_size <<= 19; - mmc->enh_user_start = - (ext_csd[EXT_CSD_ENH_START_ADDR+3] << 24) + - (ext_csd[EXT_CSD_ENH_START_ADDR+2] << 16) + - (ext_csd[EXT_CSD_ENH_START_ADDR+1] << 8) + - ext_csd[EXT_CSD_ENH_START_ADDR]; - if (mmc->high_capacity) - mmc->enh_user_start <<= 9; - } - - /* - * Host needs to enable ERASE_GRP_DEF bit if device is - * partitioned. This bit will be lost every time after a reset - * or power off. This will affect erase size. - */ - if (part_completed) - has_parts = true; - if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) && - (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) - has_parts = true; - if (has_parts) { - err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, - EXT_CSD_ERASE_GROUP_DEF, 1); - - if (err) - return err; - else - ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1; - } - - if (ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01) { - /* Read out group size from ext_csd */ - mmc->erase_grp_size = - ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024; - /* - * if high capacity and partition setting completed - * SEC_COUNT is valid even if it is smaller than 2 GiB - * JEDEC Standard JESD84-B45, 6.2.4 - */ - if (mmc->high_capacity && part_completed) { - capacity = (ext_csd[EXT_CSD_SEC_CNT]) | - (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) | - (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) | - (ext_csd[EXT_CSD_SEC_CNT + 3] << 24); - capacity *= MMC_MAX_BLOCK_LEN; - mmc->capacity_user = capacity; - } - } else { - /* Calculate the group size from the csd value. */ - int erase_gsz, erase_gmul; - erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10; - erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5; - mmc->erase_grp_size = (erase_gsz + 1) - * (erase_gmul + 1); - } - - mmc->hc_wp_grp_size = 1024 - * ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] - * ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; - - mmc->wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET]; - } - - err = mmc_set_capacity(mmc, mmc_get_blk_desc(mmc)->hwpart); + err = mmc_startup_v4(mmc); if (err) return err; - if (IS_SD(mmc)) - err = sd_change_freq(mmc); - else - err = mmc_change_freq(mmc); - + err = mmc_set_capacity(mmc, mmc_get_blk_desc(mmc)->hwpart); if (err) return err; - /* Restrict card's capabilities by what the host can do */ - mmc->card_caps &= mmc->cfg->host_caps; - if (IS_SD(mmc)) { - if (mmc->card_caps & MMC_MODE_4BIT) { - cmd.cmdidx = MMC_CMD_APP_CMD; - cmd.resp_type = MMC_RSP_R1; - cmd.cmdarg = mmc->rca << 16; - - err = mmc_send_cmd(mmc, &cmd, NULL); - if (err) - return err; - - cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; - cmd.resp_type = MMC_RSP_R1; - cmd.cmdarg = 2; - err = mmc_send_cmd(mmc, &cmd, NULL); - if (err) - return err; - - mmc_set_bus_width(mmc, 4); - } - - err = sd_read_ssr(mmc); + err = sd_get_capabilities(mmc); if (err) return err; - - if (mmc->card_caps & MMC_MODE_HS) - mmc->tran_speed = 50000000; - else - mmc->tran_speed = 25000000; - } else if (mmc->version >= MMC_VERSION_4) { - /* Only version 4 of MMC supports wider bus widths */ - int idx; - - /* An array of possible bus widths in order of preference */ - static unsigned ext_csd_bits[] = { - EXT_CSD_DDR_BUS_WIDTH_8, - EXT_CSD_DDR_BUS_WIDTH_4, - EXT_CSD_BUS_WIDTH_8, - EXT_CSD_BUS_WIDTH_4, - EXT_CSD_BUS_WIDTH_1, - }; - - /* An array to map CSD bus widths to host cap bits */ - static unsigned ext_to_hostcaps[] = { - [EXT_CSD_DDR_BUS_WIDTH_4] = - MMC_MODE_DDR_52MHz | MMC_MODE_4BIT, - [EXT_CSD_DDR_BUS_WIDTH_8] = - MMC_MODE_DDR_52MHz | MMC_MODE_8BIT, - [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT, - [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT, - }; - - /* An array to map chosen bus width to an integer */ - static unsigned widths[] = { - 8, 4, 8, 4, 1, - }; - - for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) { - unsigned int extw = ext_csd_bits[idx]; - unsigned int caps = ext_to_hostcaps[extw]; - - /* - * If the bus width is still not changed, - * don't try to set the default again. - * Otherwise, recover from switch attempts - * by switching to 1-bit bus width. - */ - if (extw == EXT_CSD_BUS_WIDTH_1 && - mmc->bus_width == 1) { - err = 0; - break; - } - - /* - * Check to make sure the card and controller support - * these capabilities - */ - if ((mmc->card_caps & caps) != caps) - continue; - - err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, - EXT_CSD_BUS_WIDTH, extw); - - if (err) - continue; - - mmc->ddr_mode = (caps & MMC_MODE_DDR_52MHz) ? 1 : 0; - mmc_set_bus_width(mmc, widths[idx]); - - err = mmc_send_ext_csd(mmc, test_csd); - - if (err) - continue; - - /* Only compare read only fields */ - if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] - == test_csd[EXT_CSD_PARTITIONING_SUPPORT] && - ext_csd[EXT_CSD_HC_WP_GRP_SIZE] - == test_csd[EXT_CSD_HC_WP_GRP_SIZE] && - ext_csd[EXT_CSD_REV] - == test_csd[EXT_CSD_REV] && - ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] - == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] && - memcmp(&ext_csd[EXT_CSD_SEC_CNT], - &test_csd[EXT_CSD_SEC_CNT], 4) == 0) - break; - else - err = -EBADMSG; - } - + err = sd_select_mode_and_width(mmc, mmc->card_caps); + } else { + err = mmc_get_capabilities(mmc); if (err) return err; - - if (mmc->card_caps & MMC_MODE_HS) { - if (mmc->card_caps & MMC_MODE_HS_52MHz) - mmc->tran_speed = 52000000; - else - mmc->tran_speed = 26000000; - } + mmc_select_mode_and_width(mmc, mmc->card_caps); } - mmc_set_clock(mmc, mmc->tran_speed); + if (err) + return err; + + mmc->best_mode = mmc->selected_mode; /* Fix the block length for DDR mode */ if (mmc->ddr_mode) { mmc->read_bl_len = MMC_MAX_BLOCK_LEN; +#if CONFIG_IS_ENABLED(MMC_WRITE) mmc->write_bl_len = MMC_MAX_BLOCK_LEN; +#endif } /* fill in device description */ @@ -1618,22 +2388,18 @@ __weak void board_mmc_power_init(void) static int mmc_power_init(struct mmc *mmc) { #if CONFIG_IS_ENABLED(DM_MMC) -#if defined(CONFIG_DM_REGULATOR) && !defined(CONFIG_SPL_BUILD) - struct udevice *vmmc_supply; +#if CONFIG_IS_ENABLED(DM_REGULATOR) int ret; ret = device_get_supply_regulator(mmc->dev, "vmmc-supply", - &vmmc_supply); - if (ret) { + &mmc->vmmc_supply); + if (ret) debug("%s: No vmmc supply\n", mmc->dev->name); - return 0; - } - ret = regulator_set_enable(vmmc_supply, true); - if (ret) { - puts("Error enabling VMMC supply\n"); - return ret; - } + ret = device_get_supply_regulator(mmc->dev, "vqmmc-supply", + &mmc->vqmmc_supply); + if (ret) + debug("%s: No vqmmc supply\n", mmc->dev->name); #endif #else /* !CONFIG_DM_MMC */ /* @@ -1645,11 +2411,86 @@ static int mmc_power_init(struct mmc *mmc) return 0; } +/* + * put the host in the initial state: + * - turn on Vdd (card power supply) + * - configure the bus width and clock to minimal values + */ +static void mmc_set_initial_state(struct mmc *mmc) +{ + int err; + + /* First try to set 3.3V. If it fails set to 1.8V */ + err = mmc_set_signal_voltage(mmc, MMC_SIGNAL_VOLTAGE_330); + if (err != 0) + err = mmc_set_signal_voltage(mmc, MMC_SIGNAL_VOLTAGE_180); + if (err != 0) + pr_warn("mmc: failed to set signal voltage\n"); + + mmc_select_mode(mmc, MMC_LEGACY); + mmc_set_bus_width(mmc, 1); + mmc_set_clock(mmc, 0, false); +} + +static int mmc_power_on(struct mmc *mmc) +{ +#if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(DM_REGULATOR) + if (mmc->vmmc_supply) { + int ret = regulator_set_enable(mmc->vmmc_supply, true); + + if (ret) { + puts("Error enabling VMMC supply\n"); + return ret; + } + } +#endif + return 0; +} + +static int mmc_power_off(struct mmc *mmc) +{ + mmc_set_clock(mmc, 1, true); +#if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(DM_REGULATOR) + if (mmc->vmmc_supply) { + int ret = regulator_set_enable(mmc->vmmc_supply, false); + + if (ret) { + debug("Error disabling VMMC supply\n"); + return ret; + } + } +#endif + return 0; +} + +static int mmc_power_cycle(struct mmc *mmc) +{ + int ret; + + ret = mmc_power_off(mmc); + if (ret) + return ret; + /* + * SD spec recommends at least 1ms of delay. Let's wait for 2ms + * to be on the safer side. + */ + udelay(2000); + return mmc_power_on(mmc); +} + int mmc_start_init(struct mmc *mmc) { bool no_card; + bool uhs_en = supports_uhs(mmc->cfg->host_caps); int err; + /* + * all hosts are capable of 1 bit bus-width and able to use the legacy + * timings. + */ + mmc->host_caps = mmc->cfg->host_caps | MMC_CAP(SD_LEGACY) | + MMC_CAP(MMC_LEGACY) | MMC_MODE_1BIT; + /* we pretend there's no card when init is NULL */ no_card = mmc_getcd(mmc) == 0; #if !CONFIG_IS_ENABLED(DM_MMC) @@ -1673,6 +2514,26 @@ int mmc_start_init(struct mmc *mmc) if (err) return err; +#ifdef CONFIG_MMC_QUIRKS + mmc->quirks = MMC_QUIRK_RETRY_SET_BLOCKLEN | + MMC_QUIRK_RETRY_SEND_CID; +#endif + + err = mmc_power_cycle(mmc); + if (err) { + /* + * if power cycling is not supported, we should not try + * to use the UHS modes, because we wouldn't be able to + * recover from an error during the UHS initialization. + */ + debug("Unable to do a full power cycle. Disabling the UHS modes for safety\n"); + uhs_en = false; + mmc->host_caps &= ~UHS_CAPS; + err = mmc_power_on(mmc); + } + if (err) + return err; + #if CONFIG_IS_ENABLED(DM_MMC) /* The device has already been probed ready for use */ #else @@ -1682,8 +2543,10 @@ int mmc_start_init(struct mmc *mmc) return err; #endif mmc->ddr_mode = 0; - mmc_set_bus_width(mmc, 1); - mmc_set_clock(mmc, 1); + +retry: + mmc_set_initial_state(mmc); + mmc_send_init_stream(mmc); /* Reset the Card */ err = mmc_go_idle(mmc); @@ -1698,7 +2561,12 @@ int mmc_start_init(struct mmc *mmc) err = mmc_send_if_cond(mmc); /* Now try to get the SD card's operating condition */ - err = sd_send_op_cond(mmc); + err = sd_send_op_cond(mmc, uhs_en); + if (err && uhs_en) { + uhs_en = false; + mmc_power_cycle(mmc); + goto retry; + } /* If the command timed out, we check for an MMC card */ if (err == -ETIMEDOUT) { @@ -1706,7 +2574,7 @@ int mmc_start_init(struct mmc *mmc) if (err) { #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) - printf("Card did not respond to voltage select!\n"); + pr_err("Card did not respond to voltage select!\n"); #endif return -EOPNOTSUPP; } @@ -1812,7 +2680,7 @@ static int mmc_probe(bd_t *bis) uclass_foreach_dev(dev, uc) { ret = device_probe(dev); if (ret) - printf("%s - probe failed: %d\n", dev->name, ret); + pr_err("%s - probe failed: %d\n", dev->name, ret); } return 0; diff --git a/drivers/mmc/mmc_private.h b/drivers/mmc/mmc_private.h index 1290eed590..a9be4b0102 100644 --- a/drivers/mmc/mmc_private.h +++ b/drivers/mmc/mmc_private.h @@ -28,7 +28,7 @@ ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt, void *dst); #endif -#if !(defined(CONFIG_SPL_BUILD) && !defined(CONFIG_SPL_SAVEENV)) +#if CONFIG_IS_ENABLED(MMC_WRITE) #if CONFIG_IS_ENABLED(BLK) ulong mmc_bwrite(struct udevice *dev, lbaint_t start, lbaint_t blkcnt, @@ -40,7 +40,7 @@ ulong mmc_bwrite(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt, ulong mmc_berase(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt); #endif -#else /* CONFIG_SPL_BUILD and CONFIG_SPL_SAVEENV is not defined */ +#else /* CONFIG_SPL_MMC_WRITE is not defined */ /* declare dummies to reduce code size. */ diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c index efa43896fc..30443d13a0 100644 --- a/drivers/mmc/omap_hsmmc.c +++ b/drivers/mmc/omap_hsmmc.c @@ -28,9 +28,9 @@ #include <mmc.h> #include <part.h> #include <i2c.h> -#include <twl4030.h> -#include <twl6030.h> +#if defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX) #include <palmas.h> +#endif #include <asm/io.h> #include <asm/arch/mmc_host_def.h> #if !defined(CONFIG_SOC_KEYSTONE) diff --git a/drivers/mmc/sandbox_mmc.c b/drivers/mmc/sandbox_mmc.c index fdb29a5505..8a5d256c11 100644 --- a/drivers/mmc/sandbox_mmc.c +++ b/drivers/mmc/sandbox_mmc.c @@ -48,9 +48,12 @@ static int sandbox_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, cmd->response[1] = 10 << 16; /* 1 << block_len */ break; case SD_CMD_SWITCH_FUNC: { + if (!data) + break; u32 *resp = (u32 *)data->dest; - resp[7] = cpu_to_be32(SD_HIGHSPEED_BUSY); + if ((cmd->cmdarg & 0xF) == UHS_SDR12_BUS_SPEED) + resp[4] = (cmd->cmdarg & 0xF) << 24; break; } case MMC_CMD_READ_SINGLE_BLOCK: diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 11d1f0c24c..e2ddf5dccd 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -157,7 +157,6 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, /* Timeout unit - ms */ static unsigned int cmd_timeout = SDHCI_CMD_DEFAULT_TIMEOUT; - sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS); mask = SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT; /* We shouldn't wait for data inihibit for stop commands, even @@ -181,6 +180,8 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, udelay(1000); } + sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS); + mask = SDHCI_INT_RESPONSE; if (!(cmd->resp_type & MMC_RSP_PRESENT)) flags = SDHCI_CMD_RESP_NONE; @@ -201,7 +202,7 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, flags |= SDHCI_CMD_DATA; /* Set Transfer mode regarding to data flag */ - if (data != 0) { + if (data) { sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL); mode = SDHCI_TRNS_BLK_CNT_EN; trans_bytes = data->blocks * data->blocksize; @@ -249,7 +250,7 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, sdhci_writel(host, cmd->cmdarg, SDHCI_ARGUMENT); #ifdef CONFIG_MMC_SDHCI_SDMA - if (data != 0) { + if (data) { trans_bytes = ALIGN(trans_bytes, CONFIG_SYS_CACHELINE_SIZE); flush_cache(start_addr, trans_bytes); } diff --git a/drivers/power/power_core.c b/drivers/power/power_core.c index b72286d429..46840a33e0 100644 --- a/drivers/power/power_core.c +++ b/drivers/power/power_core.c @@ -47,36 +47,6 @@ int pmic_set_output(struct pmic *p, u32 reg, int out, int on) return 0; } -static void pmic_show_info(struct pmic *p) -{ - printf("PMIC: %s\n", p->name); -} - -static int pmic_dump(struct pmic *p) -{ - int i, ret; - u32 val; - - if (!p) { - puts("Wrong PMIC name!\n"); - return -ENODEV; - } - - pmic_show_info(p); - for (i = 0; i < p->number_of_regs; i++) { - ret = pmic_reg_read(p, i, &val); - if (ret) - puts("PMIC: Registers dump failed\n"); - - if (!(i % 8)) - printf("\n0x%02x: ", i); - - printf("%08x ", val); - } - puts("\n"); - return 0; -} - struct pmic *pmic_alloc(void) { struct pmic *p; @@ -108,7 +78,33 @@ struct pmic *pmic_get(const char *s) return NULL; } -const char *power_get_interface(int interface) +#ifndef CONFIG_SPL_BUILD +static int pmic_dump(struct pmic *p) +{ + int i, ret; + u32 val; + + if (!p) { + puts("Wrong PMIC name!\n"); + return -ENODEV; + } + + printf("PMIC: %s\n", p->name); + for (i = 0; i < p->number_of_regs; i++) { + ret = pmic_reg_read(p, i, &val); + if (ret) + puts("PMIC: Registers dump failed\n"); + + if (!(i % 8)) + printf("\n0x%02x: ", i); + + printf("%08x ", val); + } + puts("\n"); + return 0; +} + +static const char *power_get_interface(int interface) { const char *power_interface[] = {"I2C", "SPI", "|+|-|"}; return power_interface[interface]; @@ -125,7 +121,7 @@ static void pmic_list_names(void) } } -int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +static int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { u32 ret, reg, val; char *cmd, *name; @@ -221,3 +217,4 @@ U_BOOT_CMD( "pmic name bat state - write register\n" "pmic name bat charge - write register\n" ); +#endif diff --git a/include/mmc.h b/include/mmc.h index 010ebe048c..a46eaed746 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -15,6 +15,13 @@ #include <linux/compiler.h> #include <part.h> +#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) +#define MMC_SUPPORTS_TUNING +#endif +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) +#define MMC_SUPPORTS_TUNING +#endif + /* SD/MMC version bits; 8 flags, 8 major, 8 minor, 8 change */ #define SD_VERSION_SD (1U << 31) #define MMC_VERSION_MMC (1U << 30) @@ -52,12 +59,17 @@ #define MMC_VERSION_5_0 MAKE_MMC_VERSION(5, 0, 0) #define MMC_VERSION_5_1 MAKE_MMC_VERSION(5, 1, 0) -#define MMC_MODE_HS (1 << 0) -#define MMC_MODE_HS_52MHz (1 << 1) -#define MMC_MODE_4BIT (1 << 2) -#define MMC_MODE_8BIT (1 << 3) -#define MMC_MODE_SPI (1 << 4) -#define MMC_MODE_DDR_52MHz (1 << 5) +#define MMC_CAP(mode) (1 << mode) +#define MMC_MODE_HS (MMC_CAP(MMC_HS) | MMC_CAP(SD_HS)) +#define MMC_MODE_HS_52MHz MMC_CAP(MMC_HS_52) +#define MMC_MODE_DDR_52MHz MMC_CAP(MMC_DDR_52) +#define MMC_MODE_HS200 MMC_CAP(MMC_HS_200) + +#define MMC_MODE_8BIT BIT(30) +#define MMC_MODE_4BIT BIT(29) +#define MMC_MODE_1BIT BIT(28) +#define MMC_MODE_SPI BIT(27) + #define SD_DATA_4BIT 0x00040000 @@ -82,6 +94,8 @@ #define MMC_CMD_SET_BLOCKLEN 16 #define MMC_CMD_READ_SINGLE_BLOCK 17 #define MMC_CMD_READ_MULTIPLE_BLOCK 18 +#define MMC_CMD_SEND_TUNING_BLOCK 19 +#define MMC_CMD_SEND_TUNING_BLOCK_HS200 21 #define MMC_CMD_SET_BLOCK_COUNT 23 #define MMC_CMD_WRITE_SINGLE_BLOCK 24 #define MMC_CMD_WRITE_MULTIPLE_BLOCK 25 @@ -109,12 +123,34 @@ #define SD_CMD_APP_SEND_OP_COND 41 #define SD_CMD_APP_SEND_SCR 51 +static inline bool mmc_is_tuning_cmd(uint cmdidx) +{ + if ((cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200) || + (cmdidx == MMC_CMD_SEND_TUNING_BLOCK)) + return true; + return false; +} + /* SCR definitions in different words */ #define SD_HIGHSPEED_BUSY 0x00020000 #define SD_HIGHSPEED_SUPPORTED 0x00020000 +#define UHS_SDR12_BUS_SPEED 0 +#define HIGH_SPEED_BUS_SPEED 1 +#define UHS_SDR25_BUS_SPEED 1 +#define UHS_SDR50_BUS_SPEED 2 +#define UHS_SDR104_BUS_SPEED 3 +#define UHS_DDR50_BUS_SPEED 4 + +#define SD_MODE_UHS_SDR12 BIT(UHS_SDR12_BUS_SPEED) +#define SD_MODE_UHS_SDR25 BIT(UHS_SDR25_BUS_SPEED) +#define SD_MODE_UHS_SDR50 BIT(UHS_SDR50_BUS_SPEED) +#define SD_MODE_UHS_SDR104 BIT(UHS_SDR104_BUS_SPEED) +#define SD_MODE_UHS_DDR50 BIT(UHS_DDR50_BUS_SPEED) + #define OCR_BUSY 0x80000000 #define OCR_HCS 0x40000000 +#define OCR_S18R 0x1000000 #define OCR_VOLTAGE_MASK 0x007FFF80 #define OCR_ACCESS_MODE 0x60000000 @@ -206,11 +242,23 @@ #define EXT_CSD_CARD_TYPE_DDR_52 (EXT_CSD_CARD_TYPE_DDR_1_8V \ | EXT_CSD_CARD_TYPE_DDR_1_2V) +#define EXT_CSD_CARD_TYPE_HS200_1_8V BIT(4) /* Card can run at 200MHz */ + /* SDR mode @1.8V I/O */ +#define EXT_CSD_CARD_TYPE_HS200_1_2V BIT(5) /* Card can run at 200MHz */ + /* SDR mode @1.2V I/O */ +#define EXT_CSD_CARD_TYPE_HS200 (EXT_CSD_CARD_TYPE_HS200_1_8V | \ + EXT_CSD_CARD_TYPE_HS200_1_2V) + #define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */ #define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */ #define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */ #define EXT_CSD_DDR_BUS_WIDTH_4 5 /* Card is in 4 bit DDR mode */ #define EXT_CSD_DDR_BUS_WIDTH_8 6 /* Card is in 8 bit DDR mode */ +#define EXT_CSD_DDR_FLAG BIT(2) /* Flag for DDR mode */ + +#define EXT_CSD_TIMING_LEGACY 0 /* no high speed */ +#define EXT_CSD_TIMING_HS 1 /* HS */ +#define EXT_CSD_TIMING_HS200 2 /* HS200 */ #define EXT_CSD_BOOT_ACK_ENABLE (1 << 6) #define EXT_CSD_BOOT_PARTITION_ENABLE (1 << 3) @@ -265,6 +313,20 @@ #define ENHNCD_SUPPORT (0x2) #define PART_ENH_ATTRIB (0x1f) +#define MMC_QUIRK_RETRY_SEND_CID BIT(0) +#define MMC_QUIRK_RETRY_SET_BLOCKLEN BIT(1) + +enum mmc_voltage { + MMC_SIGNAL_VOLTAGE_000 = 0, + MMC_SIGNAL_VOLTAGE_120 = 1, + MMC_SIGNAL_VOLTAGE_180 = 2, + MMC_SIGNAL_VOLTAGE_330 = 4, +}; + +#define MMC_ALL_SIGNAL_VOLTAGE (MMC_SIGNAL_VOLTAGE_120 |\ + MMC_SIGNAL_VOLTAGE_180 |\ + MMC_SIGNAL_VOLTAGE_330) + /* Maximum block size for MMC */ #define MMC_MAX_BLOCK_LEN 512 @@ -347,6 +409,14 @@ struct dm_mmc_ops { int (*set_ios)(struct udevice *dev); /** + * send_init_stream() - send the initialization stream: 74 clock cycles + * This is used after power up before sending the first command + * + * @dev: Device to update + */ + void (*send_init_stream)(struct udevice *dev); + + /** * get_cd() - See whether a card is present * * @dev: Device to check @@ -361,6 +431,30 @@ struct dm_mmc_ops { * @return 0 if write-enabled, 1 if write-protected, -ve on error */ int (*get_wp)(struct udevice *dev); + +#ifdef MMC_SUPPORTS_TUNING + /** + * execute_tuning() - Start the tuning process + * + * @dev: Device to start the tuning + * @opcode: Command opcode to send + * @return 0 if OK, -ve on error + */ + int (*execute_tuning)(struct udevice *dev, uint opcode); +#endif + +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) + /** + * wait_dat0() - wait until dat0 is in the target state + * (CLK must be running during the wait) + * + * @dev: Device to check + * @state: target state + * @timeout: timeout in us + * @return 0 if dat0 is in the target state, -ve on error + */ + int (*wait_dat0)(struct udevice *dev, int state, int timeout); +#endif }; #define mmc_get_ops(dev) ((struct dm_mmc_ops *)(dev)->driver->ops) @@ -368,13 +462,19 @@ struct dm_mmc_ops { int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, struct mmc_data *data); int dm_mmc_set_ios(struct udevice *dev); +void dm_mmc_send_init_stream(struct udevice *dev); int dm_mmc_get_cd(struct udevice *dev); int dm_mmc_get_wp(struct udevice *dev); +int dm_mmc_execute_tuning(struct udevice *dev, uint opcode); +int dm_mmc_wait_dat0(struct udevice *dev, int state, int timeout); /* Transition functions for compatibility */ int mmc_set_ios(struct mmc *mmc); +void mmc_send_init_stream(struct mmc *mmc); int mmc_getcd(struct mmc *mmc); int mmc_getwp(struct mmc *mmc); +int mmc_execute_tuning(struct mmc *mmc, uint opcode); +int mmc_wait_dat0(struct mmc *mmc, int state, int timeout); #else struct mmc_ops { @@ -406,6 +506,50 @@ struct sd_ssr { unsigned int erase_offset; /* In milliseconds */ }; +enum bus_mode { + MMC_LEGACY, + SD_LEGACY, + MMC_HS, + SD_HS, + MMC_HS_52, + MMC_DDR_52, + UHS_SDR12, + UHS_SDR25, + UHS_SDR50, + UHS_DDR50, + UHS_SDR104, + MMC_HS_200, + MMC_MODES_END +}; + +const char *mmc_mode_name(enum bus_mode mode); +void mmc_dump_capabilities(const char *text, uint caps); + +static inline bool mmc_is_mode_ddr(enum bus_mode mode) +{ + if (mode == MMC_DDR_52) + return true; +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) + else if (mode == UHS_DDR50) + return true; +#endif + else + return false; +} + +#define UHS_CAPS (MMC_CAP(UHS_SDR12) | MMC_CAP(UHS_SDR25) | \ + MMC_CAP(UHS_SDR50) | MMC_CAP(UHS_SDR104) | \ + MMC_CAP(UHS_DDR50)) + +static inline bool supports_uhs(uint caps) +{ +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) + return (caps & UHS_CAPS) ? true : false; +#else + return false; +#endif +} + /* * With CONFIG_DM_MMC enabled, struct mmc can be accessed from the MMC device * with mmc_get_mmc_dev(). @@ -421,9 +565,12 @@ struct mmc { void *priv; uint has_init; int high_capacity; + bool clk_disable; /* true if the clock can be turned off */ uint bus_width; uint clock; + enum mmc_voltage signal_voltage; uint card_caps; + uint host_caps; uint ocr; uint dsr; uint dsr_imp; @@ -436,18 +583,27 @@ struct mmc { u8 wr_rel_set; u8 part_config; uint tran_speed; + uint legacy_speed; /* speed for the legacy mode provided by the card */ uint read_bl_len; +#if CONFIG_IS_ENABLED(MMC_WRITE) uint write_bl_len; uint erase_grp_size; /* in 512-byte sectors */ +#endif +#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING) uint hc_wp_grp_size; /* in 512-byte sectors */ +#endif +#if CONFIG_IS_ENABLED(MMC_WRITE) struct sd_ssr ssr; /* SD status register */ +#endif u64 capacity; u64 capacity_user; u64 capacity_boot; u64 capacity_rpmb; u64 capacity_gp[4]; +#ifndef CONFIG_SPL_BUILD u64 enh_user_start; u64 enh_user_size; +#endif #if !CONFIG_IS_ENABLED(BLK) struct blk_desc block_dev; #endif @@ -457,7 +613,21 @@ struct mmc { int ddr_mode; #if CONFIG_IS_ENABLED(DM_MMC) struct udevice *dev; /* Device for this MMC controller */ +#if CONFIG_IS_ENABLED(DM_REGULATOR) + struct udevice *vmmc_supply; /* Main voltage regulator (Vcc)*/ + struct udevice *vqmmc_supply; /* IO voltage regulator (Vccq)*/ #endif +#endif + u8 *ext_csd; + u32 cardtype; /* cardtype read from the MMC */ + enum mmc_voltage current_voltage; + enum bus_mode selected_mode; /* mode currently used */ + enum bus_mode best_mode; /* best mode is the supported mode with the + * highest bandwidth. It may not always be the + * operating mode due to limitations when + * accessing the boot partitions + */ + u32 quirks; }; struct mmc_hwpart_conf { @@ -507,8 +677,36 @@ void mmc_destroy(struct mmc *mmc); int mmc_unbind(struct udevice *dev); int mmc_initialize(bd_t *bis); int mmc_init(struct mmc *mmc); +int mmc_send_tuning(struct mmc *mmc, u32 opcode, int *cmd_error); + +/** + * mmc_of_parse() - Parse the device tree to get the capabilities of the host + * + * @dev: MMC device + * @cfg: MMC configuration + * @return 0 if OK, -ve on error + */ +int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg); + int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size); -void mmc_set_clock(struct mmc *mmc, uint clock); + +/** + * mmc_voltage_to_mv() - Convert a mmc_voltage in mV + * + * @voltage: The mmc_voltage to convert + * @return the value in mV if OK, -EINVAL on error (invalid mmc_voltage value) + */ +int mmc_voltage_to_mv(enum mmc_voltage voltage); + +/** + * mmc_set_clock() - change the bus clock + * @mmc: MMC struct + * @clock: bus frequency in Hz + * @disable: flag indicating if the clock must on or off + * @return 0 if OK, -ve on error + */ +int mmc_set_clock(struct mmc *mmc, uint clock, bool disable); + struct mmc *find_mmc_device(int dev_num); int mmc_set_dev(int dev_num); void print_mmc_devices(char separator); |