diff options
author | Simon Glass <sjg@chromium.org> | 2021-07-19 04:02:40 +0300 |
---|---|---|
committer | Minkyu Kang <mk7.kang@samsung.com> | 2021-07-27 04:34:27 +0300 |
commit | 5e19f4aa138144c92b63e9e6f1f931ac9b0db3ef (patch) | |
tree | 52c32ca8f0d4ec116086c342120fdf6d9224c409 /board/samsung/common | |
parent | b70b9b07463db2f6937c7ea6d7fb5122feb7ba1b (diff) | |
download | u-boot-5e19f4aa138144c92b63e9e6f1f931ac9b0db3ef.tar.xz |
samsung: exynos: Convert SROMC interface to a driver
Add a bus driver for this and use it to configure the bus parameters for
the Ethernet interface. Drop the old pre-driver-model code.
Switch over to use driver model for Ethernet.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'board/samsung/common')
-rw-r--r-- | board/samsung/common/Makefile | 2 | ||||
-rw-r--r-- | board/samsung/common/board.c | 78 | ||||
-rw-r--r-- | board/samsung/common/sromc.c | 76 |
3 files changed, 77 insertions, 79 deletions
diff --git a/board/samsung/common/Makefile b/board/samsung/common/Makefile index 3593c77cbc..d31b81abf1 100644 --- a/board/samsung/common/Makefile +++ b/board/samsung/common/Makefile @@ -7,7 +7,7 @@ obj-$(CONFIG_USB_GADGET_DOWNLOAD) += gadget.o obj-$(CONFIG_MISC_COMMON) += misc.o ifndef CONFIG_SPL_BUILD -obj-$(CONFIG_BOARD_COMMON) += board.o +obj-$(CONFIG_BOARD_COMMON) += board.o sromc.o ifdef CONFIG_EXYNOS5_DT obj-y += exynos5-dt.o obj-$(CONFIG_BOARD_TYPES) += exynos5-dt-types.o diff --git a/board/samsung/common/board.c b/board/samsung/common/board.c index 104d2a6574..1c2fe025e8 100644 --- a/board/samsung/common/board.c +++ b/board/samsung/common/board.c @@ -26,7 +26,6 @@ #include <asm/arch/pinmux.h> #include <asm/arch/power.h> #include <asm/arch/system.h> -#include <asm/arch/sromc.h> #include <lcd.h> #include <i2c.h> #include <mmc.h> @@ -195,83 +194,6 @@ int power_init_board(void) } #endif -#ifdef CONFIG_SMC911X -static int decode_sromc(const void *blob, struct fdt_sromc *config) -{ - int err; - int node; - - node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS5_SROMC); - if (node < 0) { - debug("Could not find SROMC node\n"); - return node; - } - - config->bank = fdtdec_get_int(blob, node, "bank", 0); - config->width = fdtdec_get_int(blob, node, "width", 2); - - err = fdtdec_get_int_array(blob, node, "srom-timing", config->timing, - FDT_SROM_TIMING_COUNT); - if (err < 0) { - debug("Could not decode SROMC configuration Error: %s\n", - fdt_strerror(err)); - return -FDT_ERR_NOTFOUND; - } - return 0; -} -#endif - -int board_eth_init(struct bd_info *bis) -{ -#ifdef CONFIG_SMC911X - u32 smc_bw_conf, smc_bc_conf; - struct fdt_sromc config; - fdt_addr_t base_addr; - int node; - - node = decode_sromc(gd->fdt_blob, &config); - if (node < 0) { - debug("%s: Could not find sromc configuration\n", __func__); - return 0; - } - node = fdtdec_next_compatible(gd->fdt_blob, node, COMPAT_SMSC_LAN9215); - if (node < 0) { - debug("%s: Could not find lan9215 configuration\n", __func__); - return 0; - } - - /* We now have a node, so any problems from now on are errors */ - base_addr = fdtdec_get_addr(gd->fdt_blob, node, "reg"); - if (base_addr == FDT_ADDR_T_NONE) { - debug("%s: Could not find lan9215 address\n", __func__); - return -1; - } - - /* Ethernet needs data bus width of 16 bits */ - if (config.width != 2) { - debug("%s: Unsupported bus width %d\n", __func__, - config.width); - return -1; - } - smc_bw_conf = SROMC_DATA16_WIDTH(config.bank) - | SROMC_BYTE_ENABLE(config.bank); - - smc_bc_conf = SROMC_BC_TACS(config.timing[FDT_SROM_TACS]) | - SROMC_BC_TCOS(config.timing[FDT_SROM_TCOS]) | - SROMC_BC_TACC(config.timing[FDT_SROM_TACC]) | - SROMC_BC_TCOH(config.timing[FDT_SROM_TCOH]) | - SROMC_BC_TAH(config.timing[FDT_SROM_TAH]) | - SROMC_BC_TACP(config.timing[FDT_SROM_TACP]) | - SROMC_BC_PMC(config.timing[FDT_SROM_PMC]); - - /* Select and configure the SROMC bank */ - exynos_pinmux_config(PERIPH_ID_SROMC, config.bank); - s5p_config_sromc(config.bank, smc_bw_conf, smc_bc_conf); - return smc911x_initialize(0, base_addr); -#endif - return 0; -} - #if defined(CONFIG_DISPLAY_BOARDINFO) || defined(CONFIG_DISPLAY_BOARDINFO_LATE) int checkboard(void) { diff --git a/board/samsung/common/sromc.c b/board/samsung/common/sromc.c new file mode 100644 index 0000000000..76e37dfe26 --- /dev/null +++ b/board/samsung/common/sromc.c @@ -0,0 +1,76 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2021 Google LLC + */ + +#define LOG_CATEGORY UCLASS_ETH + +#include <common.h> +#include <dm.h> +#include <log.h> +#include <asm/arch/pinmux.h> +#include <asm/arch/sromc.h> + +enum { + FDT_SROM_PMC, + FDT_SROM_TACP, + FDT_SROM_TAH, + FDT_SROM_TCOH, + FDT_SROM_TACC, + FDT_SROM_TCOS, + FDT_SROM_TACS, + + FDT_SROM_TIMING_COUNT, +}; + +static int exyno5_sromc_probe(struct udevice *dev) +{ + u32 timing[FDT_SROM_TIMING_COUNT]; /* timing parameters */ + u32 smc_bw_conf, smc_bc_conf; + int bank; /* srom bank number */ + int width; /* bus width in bytes */ + int ret; + + if (!IS_ENABLED(CONFIG_SMC911X)) + return 0; + + bank = dev_read_s32_default(dev, "bank", 0); + width = dev_read_s32_default(dev, "width", 2); + + /* Ethernet needs data bus width of 16 bits */ + if (width != 2) { + log_debug("Unsupported bus width %d\n", width); + return log_msg_ret("width", -EINVAL); + } + ret = dev_read_u32_array(dev, "srom-timing", timing, + FDT_SROM_TIMING_COUNT); + if (ret) + return log_msg_ret("sromc", -EINVAL); + + smc_bw_conf = SROMC_DATA16_WIDTH(bank) | SROMC_BYTE_ENABLE(bank); + smc_bc_conf = SROMC_BC_TACS(timing[FDT_SROM_TACS]) | + SROMC_BC_TCOS(timing[FDT_SROM_TCOS]) | + SROMC_BC_TACC(timing[FDT_SROM_TACC]) | + SROMC_BC_TCOH(timing[FDT_SROM_TCOH]) | + SROMC_BC_TAH(timing[FDT_SROM_TAH]) | + SROMC_BC_TACP(timing[FDT_SROM_TACP]) | + SROMC_BC_PMC(timing[FDT_SROM_PMC]); + + /* Select and configure the SROMC bank */ + exynos_pinmux_config(PERIPH_ID_SROMC, bank); + s5p_config_sromc(bank, smc_bw_conf, smc_bc_conf); + + return 0; +} + +static const struct udevice_id exyno5_sromc_ids[] = { + { .compatible = "samsung,exynos5-sromc" }, + {} +}; + +U_BOOT_DRIVER(exyno5_sromc) = { + .name = "exyno5_sromc", + .id = UCLASS_SIMPLE_BUS, + .of_match = exyno5_sromc_ids, + .probe = exyno5_sromc_probe, +}; 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