diff options
author | Tom Rini <trini@konsulko.com> | 2020-10-06 15:36:10 +0300 |
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committer | Tom Rini <trini@konsulko.com> | 2020-10-06 15:36:10 +0300 |
commit | 987ab49366f3fcd25039eab431bf099b587b3265 (patch) | |
tree | 75defe86fd35339b1b2e695ea1beebc0bbf1bbaf /drivers/usb/dwc3 | |
parent | b24550accd7e3a62c6da773a9096dfd1471403d5 (diff) | |
parent | 2d481b2e3e22f7be854d381a7bafd92a65e18b23 (diff) | |
download | u-boot-987ab49366f3fcd25039eab431bf099b587b3265.tar.xz |
Merge tag 'u-boot-amlogic-20201005' of https://gitlab.denx.de/u-boot/custodians/u-boot-amlogic
- generate unique mac address from SoC serial on S400 board
- Add USB support for GXL and AXG SoCs
- Update Gadget code to use the new GXL and AXG USB glue driver
- Add a VIM3 board support to add dynamic PCIe enable in OS DT
- Fix AXG pinmux with requesting GPIOs
- Add missing GPIOA_18 for AXG pinctrl
- Add Amlogic PWM driver
Diffstat (limited to 'drivers/usb/dwc3')
-rw-r--r-- | drivers/usb/dwc3/Kconfig | 8 | ||||
-rw-r--r-- | drivers/usb/dwc3/Makefile | 1 | ||||
-rw-r--r-- | drivers/usb/dwc3/dwc3-meson-gxl.c | 425 |
3 files changed, 434 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index c302486291..802ee508d9 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -38,6 +38,14 @@ config USB_DWC3_MESON_G12A Select this for Amlogic Meson G12A Platforms. This wrapper supports Host and Peripheral operation modes. +config USB_DWC3_MESON_GXL + bool "Amlogic Meson GXL USB wrapper" + depends on DM_USB && USB_DWC3 && ARCH_MESON + imply PHY + help + Select this for Amlogic Meson GXL and GXM Platforms. + This wrapper supports Host and Peripheral operation modes. + config USB_DWC3_UNIPHIER bool "DesignWare USB3 Host Support on UniPhier Platforms" depends on ARCH_UNIPHIER && USB_XHCI_DWC3 diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 0b652a6f36..6e3e024e97 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_USB_DWC3_GADGET) += gadget.o ep0.o obj-$(CONFIG_USB_DWC3_OMAP) += dwc3-omap.o obj-$(CONFIG_USB_DWC3_MESON_G12A) += dwc3-meson-g12a.o +obj-$(CONFIG_USB_DWC3_MESON_GXL) += dwc3-meson-gxl.o obj-$(CONFIG_USB_DWC3_GENERIC) += dwc3-generic.o obj-$(CONFIG_USB_DWC3_UNIPHIER) += dwc3-uniphier.o obj-$(CONFIG_USB_DWC3_PHY_OMAP) += ti_usb_phy.o diff --git a/drivers/usb/dwc3/dwc3-meson-gxl.c b/drivers/usb/dwc3/dwc3-meson-gxl.c new file mode 100644 index 0000000000..92ee0866f7 --- /dev/null +++ b/drivers/usb/dwc3/dwc3-meson-gxl.c @@ -0,0 +1,425 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Amlogic GXL DWC3 Glue layer + * + * Copyright (C) 2019 BayLibre, SAS + * Author: Neil Armstrong <narmstrong@baylibre.com> + */ + +#define DEBUG +#include <common.h> +#include <asm-generic/io.h> +#include <dm.h> +#include <dm/device-internal.h> +#include <dm/lists.h> +#include <dwc3-uboot.h> +#include <generic-phy.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <malloc.h> +#include <regmap.h> +#include <usb.h> +#include "core.h" +#include "gadget.h" +#include <reset.h> +#include <clk.h> +#include <power/regulator.h> +#include <linux/bitfield.h> +#include <linux/bitops.h> +#include <linux/compat.h> +#include <asm/arch/usb-gx.h> + +/* USB Glue Control Registers */ + +#define USB_R0 0x00 + #define USB_R0_P30_FSEL_MASK GENMASK(5, 0) + #define USB_R0_P30_PHY_RESET BIT(6) + #define USB_R0_P30_TEST_POWERDOWN_HSP BIT(7) + #define USB_R0_P30_TEST_POWERDOWN_SSP BIT(8) + #define USB_R0_P30_ACJT_LEVEL_MASK GENMASK(13, 9) + #define USB_R0_P30_TX_BOOST_LEVEL_MASK GENMASK(16, 14) + #define USB_R0_P30_LANE0_TX2RX_LOOPBACK BIT(17) + #define USB_R0_P30_LANE0_EXT_PCLK_REQ BIT(18) + #define USB_R0_P30_PCS_RX_LOS_MASK_VAL_MASK GENMASK(28, 19) + #define USB_R0_U2D_SS_SCALEDOWN_MODE_MASK GENMASK(30, 29) + #define USB_R0_U2D_ACT BIT(31) + +#define USB_R1 0x04 + #define USB_R1_U3H_BIGENDIAN_GS BIT(0) + #define USB_R1_U3H_PME_ENABLE BIT(1) + #define USB_R1_U3H_HUB_PORT_OVERCURRENT_MASK GENMASK(6, 2) + #define USB_R1_U3H_HUB_PORT_PERM_ATTACH_MASK GENMASK(11, 7) + #define USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK GENMASK(15, 12) + #define USB_R1_U3H_HOST_U3_PORT_DISABLE BIT(16) + #define USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT BIT(17) + #define USB_R1_U3H_HOST_MSI_ENABLE BIT(18) + #define USB_R1_U3H_FLADJ_30MHZ_REG_MASK GENMASK(24, 19) + #define USB_R1_P30_PCS_TX_SWING_FULL_MASK GENMASK(31, 25) + +#define USB_R2 0x08 + #define USB_R2_P30_CR_DATA_IN_MASK GENMASK(15, 0) + #define USB_R2_P30_CR_READ BIT(16) + #define USB_R2_P30_CR_WRITE BIT(17) + #define USB_R2_P30_CR_CAP_ADDR BIT(18) + #define USB_R2_P30_CR_CAP_DATA BIT(19) + #define USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK GENMASK(25, 20) + #define USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK GENMASK(31, 26) + +#define USB_R3 0x0c + #define USB_R3_P30_SSC_ENABLE BIT(0) + #define USB_R3_P30_SSC_RANGE_MASK GENMASK(3, 1) + #define USB_R3_P30_SSC_REF_CLK_SEL_MASK GENMASK(12, 4) + #define USB_R3_P30_REF_SSP_EN BIT(13) + #define USB_R3_P30_LOS_BIAS_MASK GENMASK(18, 16) + #define USB_R3_P30_LOS_LEVEL_MASK GENMASK(23, 19) + #define USB_R3_P30_MPLL_MULTIPLIER_MASK GENMASK(30, 24) + +#define USB_R4 0x10 + #define USB_R4_P21_PORT_RESET_0 BIT(0) + #define USB_R4_P21_SLEEP_M0 BIT(1) + #define USB_R4_MEM_PD_MASK GENMASK(3, 2) + #define USB_R4_P21_ONLY BIT(4) + +#define USB_R5 0x14 + #define USB_R5_ID_DIG_SYNC BIT(0) + #define USB_R5_ID_DIG_REG BIT(1) + #define USB_R5_ID_DIG_CFG_MASK GENMASK(3, 2) + #define USB_R5_ID_DIG_EN_0 BIT(4) + #define USB_R5_ID_DIG_EN_1 BIT(5) + #define USB_R5_ID_DIG_CURR BIT(6) + #define USB_R5_ID_DIG_IRQ BIT(7) + #define USB_R5_ID_DIG_TH_MASK GENMASK(15, 8) + #define USB_R5_ID_DIG_CNT_MASK GENMASK(23, 16) + +/* read-only register */ +#define USB_R6 0x18 + #define USB_R6_P30_CR_DATA_OUT_MASK GENMASK(15, 0) + #define USB_R6_P30_CR_ACK BIT(16) + +enum { + USB2_HOST_PHY0 = 0, + USB2_OTG_PHY1, + USB2_HOST_PHY2, + PHY_COUNT, +}; + +static const char *phy_names[PHY_COUNT] = { + "usb2-phy0", "usb2-phy1", "usb2-phy2", +}; + +struct dwc3_meson_gxl { + struct udevice *dev; + struct regmap *regmap; + struct clk clk; + struct reset_ctl reset; + struct phy phys[PHY_COUNT]; + enum usb_dr_mode otg_mode; + enum usb_dr_mode otg_phy_mode; + unsigned int usb2_ports; +#if CONFIG_IS_ENABLED(DM_REGULATOR) + struct udevice *vbus_supply; +#endif +}; + +#define U2P_REG_SIZE 0x20 +#define USB_REG_OFFSET 0x80 + +#define USB2_OTG_PHY USB2_OTG_PHY1 + +static void dwc3_meson_gxl_usb2_set_mode(struct dwc3_meson_gxl *priv, enum usb_dr_mode mode) +{ + switch (mode) { + case USB_DR_MODE_HOST: + case USB_DR_MODE_OTG: + case USB_DR_MODE_UNKNOWN: + regmap_update_bits(priv->regmap, USB_R1, + USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK, 0); + regmap_update_bits(priv->regmap, USB_R0, + USB_R0_U2D_ACT, 0); + regmap_update_bits(priv->regmap, USB_R4, + USB_R4_P21_SLEEP_M0, 0); + break; + + case USB_DR_MODE_PERIPHERAL: + regmap_update_bits(priv->regmap, USB_R0, + USB_R0_U2D_ACT, USB_R0_U2D_ACT); + regmap_update_bits(priv->regmap, USB_R0, + USB_R0_U2D_SS_SCALEDOWN_MODE_MASK, 0); + regmap_update_bits(priv->regmap, USB_R4, + USB_R4_P21_SLEEP_M0, USB_R4_P21_SLEEP_M0); + break; + } +} + +static int dwc3_meson_gxl_usb2_init(struct dwc3_meson_gxl *priv) +{ + int i; + + for (i = 0; i < PHY_COUNT; ++i) { + if (!priv->phys[i].dev) + continue; + + phy_meson_gxl_usb2_set_mode(&priv->phys[i], + (i == USB2_OTG_PHY) ? USB_DR_MODE_PERIPHERAL + : USB_DR_MODE_HOST); + } + + return 0; +} + +static int dwc3_meson_gxl_usb_init(struct dwc3_meson_gxl *priv) +{ + int ret; + + ret = dwc3_meson_gxl_usb2_init(priv); + if (ret) + return ret; + + regmap_update_bits(priv->regmap, USB_R1, + USB_R1_U3H_FLADJ_30MHZ_REG_MASK, + FIELD_PREP(USB_R1_U3H_FLADJ_30MHZ_REG_MASK, 0x20)); + + regmap_update_bits(priv->regmap, USB_R5, + USB_R5_ID_DIG_EN_0, + USB_R5_ID_DIG_EN_0); + regmap_update_bits(priv->regmap, USB_R5, + USB_R5_ID_DIG_EN_1, + USB_R5_ID_DIG_EN_1); + regmap_update_bits(priv->regmap, USB_R5, + USB_R5_ID_DIG_TH_MASK, + FIELD_PREP(USB_R5_ID_DIG_TH_MASK, 0xff)); + + dwc3_meson_gxl_usb2_set_mode(priv, priv->otg_phy_mode); + + return 0; +} + +int dwc3_meson_gxl_force_mode(struct udevice *dev, enum usb_dr_mode mode) +{ + struct dwc3_meson_gxl *priv = dev_get_platdata(dev); + + if (!priv) + return -EINVAL; + + if (mode != USB_DR_MODE_HOST && mode != USB_DR_MODE_PERIPHERAL) + return -EINVAL; + + if (!priv->phys[USB2_OTG_PHY].dev) + return -EINVAL; + + if (mode == priv->otg_phy_mode) + return 0; + + if (mode == USB_DR_MODE_HOST) + debug("%s: switching to Host Mode\n", __func__); + else + debug("%s: switching to Device Mode\n", __func__); + +#if CONFIG_IS_ENABLED(DM_REGULATOR) + if (priv->vbus_supply) { + int ret = regulator_set_enable(priv->vbus_supply, + (mode == USB_DR_MODE_PERIPHERAL)); + if (ret) + return ret; + } +#endif + priv->otg_phy_mode = mode; + + phy_meson_gxl_usb2_set_mode(&priv->phys[USB2_OTG_PHY], mode); + + dwc3_meson_gxl_usb2_set_mode(priv, mode); + + return 0; +} + +static int dwc3_meson_gxl_get_phys(struct dwc3_meson_gxl *priv) +{ + int i, ret; + + for (i = 0 ; i < PHY_COUNT ; ++i) { + ret = generic_phy_get_by_name(priv->dev, phy_names[i], + &priv->phys[i]); + if (ret == -ENOENT || ret == -ENODATA) { + priv->phys[i].dev = NULL; + continue; + } + + if (ret) + return ret; + + priv->usb2_ports++; + } + + debug("%s: usb2 ports: %d\n", __func__, priv->usb2_ports); + + return 0; +} + +static int dwc3_meson_gxl_reset_init(struct dwc3_meson_gxl *priv) +{ + int ret; + + ret = reset_get_by_index(priv->dev, 0, &priv->reset); + if (ret) + return ret; + + ret = reset_assert(&priv->reset); + udelay(1); + ret |= reset_deassert(&priv->reset); + if (ret) { + reset_free(&priv->reset); + return ret; + } + + return 0; +} + +static int dwc3_meson_gxl_clk_init(struct dwc3_meson_gxl *priv) +{ + int ret; + + ret = clk_get_by_index(priv->dev, 0, &priv->clk); + if (ret) + return ret; + +#if CONFIG_IS_ENABLED(CLK) + ret = clk_enable(&priv->clk); + if (ret) { + clk_free(&priv->clk); + return ret; + } +#endif + + return 0; +} + +static int dwc3_meson_gxl_probe(struct udevice *dev) +{ + struct dwc3_meson_gxl *priv = dev_get_platdata(dev); + int ret, i; + + priv->dev = dev; + + ret = regmap_init_mem(dev_ofnode(dev), &priv->regmap); + if (ret) + return ret; + + ret = dwc3_meson_gxl_clk_init(priv); + if (ret) + return ret; + + ret = dwc3_meson_gxl_reset_init(priv); + if (ret) + return ret; + + ret = dwc3_meson_gxl_get_phys(priv); + if (ret) + return ret; + +#if CONFIG_IS_ENABLED(DM_REGULATOR) + ret = device_get_supply_regulator(dev, "vbus-supply", + &priv->vbus_supply); + if (ret && ret != -ENOENT) { + pr_err("Failed to get PHY regulator\n"); + return ret; + } + + if (priv->vbus_supply) { + ret = regulator_set_enable(priv->vbus_supply, true); + if (ret) + return ret; + } +#endif + + /* On GXL PHY must be started in device mode for DWC2 init */ + priv->otg_mode = USB_DR_MODE_PERIPHERAL; + + ret = dwc3_meson_gxl_usb_init(priv); + if (ret) + return ret; + + priv->otg_mode = usb_get_dr_mode(dev->node); + + if (priv->otg_mode == USB_DR_MODE_PERIPHERAL) + priv->otg_phy_mode = USB_DR_MODE_PERIPHERAL; + else + priv->otg_phy_mode = USB_DR_MODE_HOST; + + for (i = 0 ; i < PHY_COUNT ; ++i) { + if (!priv->phys[i].dev) + continue; + + ret = generic_phy_init(&priv->phys[i]); + if (ret) + goto err_phy_init; + } + + for (i = 0; i < PHY_COUNT; ++i) { + if (!priv->phys[i].dev) + continue; + + ret = generic_phy_power_on(&priv->phys[i]); + if (ret) + goto err_phy_init; + } + + if (priv->phys[USB2_OTG_PHY].dev) + phy_meson_gxl_usb2_set_mode(&priv->phys[USB2_OTG_PHY], + priv->otg_phy_mode); + + dwc3_meson_gxl_usb2_set_mode(priv, priv->otg_phy_mode); + + return 0; + +err_phy_init: + for (i = 0 ; i < PHY_COUNT ; ++i) { + if (!priv->phys[i].dev) + continue; + + generic_phy_exit(&priv->phys[i]); + } + + return ret; +} + +static int dwc3_meson_gxl_remove(struct udevice *dev) +{ + struct dwc3_meson_gxl *priv = dev_get_platdata(dev); + int i; + + reset_release_all(&priv->reset, 1); + + clk_release_all(&priv->clk, 1); + + for (i = 0; i < PHY_COUNT; ++i) { + if (!priv->phys[i].dev) + continue; + + generic_phy_power_off(&priv->phys[i]); + } + + for (i = 0 ; i < PHY_COUNT ; ++i) { + if (!priv->phys[i].dev) + continue; + + generic_phy_exit(&priv->phys[i]); + } + + return dm_scan_fdt_dev(dev); +} + +static const struct udevice_id dwc3_meson_gxl_ids[] = { + { .compatible = "amlogic,meson-gxl-usb-ctrl" }, + { .compatible = "amlogic,meson-gxm-usb-ctrl" }, + { } +}; + +U_BOOT_DRIVER(dwc3_generic_wrapper) = { + .name = "dwc3-meson-gxl", + .id = UCLASS_SIMPLE_BUS, + .of_match = dwc3_meson_gxl_ids, + .probe = dwc3_meson_gxl_probe, + .remove = dwc3_meson_gxl_remove, + .platdata_auto_alloc_size = sizeof(struct dwc3_meson_gxl), + +}; 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