--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Rockchip USBDP Combo PHY with Samsung IP block driver
+ *
+ * Copyright (C) 2021 Rockchip Electronics Co., Ltd
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <dm/device_compat.h>
+#include <dm/devres.h>
+#include <dm/lists.h>
+#include <dm/of.h>
+#include <dm/of_access.h>
+#include <generic-phy.h>
+#include <linux/bitfield.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/otg.h>
+#include <regmap.h>
+#include <reset.h>
+#include <syscon.h>
+#include <asm/arch-rockchip/clock.h>
+
+#include <linux/usb/phy-rockchip-usbdp.h>
+
+#define BIT_WRITEABLE_SHIFT 16
+
+enum {
+ UDPHY_MODE_NONE = 0,
+ UDPHY_MODE_USB = BIT(0),
+ UDPHY_MODE_DP = BIT(1),
+ UDPHY_MODE_DP_USB = BIT(1) | BIT(0),
+};
+
+struct udphy_grf_reg {
+ unsigned int offset;
+ unsigned int bitend;
+ unsigned int bitstart;
+ unsigned int disable;
+ unsigned int enable;
+};
+
+/**
+ * struct reg_sequence - An individual write from a sequence of writes.
+ *
+ * @reg: Register address.
+ * @def: Register value.
+ * @delay_us: Delay to be applied after the register write in microseconds
+ *
+ * Register/value pairs for sequences of writes with an optional delay in
+ * microseconds to be applied after each write.
+ */
+struct reg_sequence {
+ unsigned int reg;
+ unsigned int def;
+ unsigned int delay_us;
+};
+
+struct udphy_grf_cfg {
+ /* u2phy-grf */
+ struct udphy_grf_reg bvalid_phy_con;
+ struct udphy_grf_reg bvalid_grf_con;
+
+ /* usb-grf */
+ struct udphy_grf_reg usb3otg0_cfg;
+ struct udphy_grf_reg usb3otg1_cfg;
+
+ /* usbdpphy-grf */
+ struct udphy_grf_reg low_pwrn;
+ struct udphy_grf_reg rx_lfps;
+};
+
+struct rockchip_udphy;
+
+struct rockchip_udphy_cfg {
+ /* resets to be requested */
+ const char * const *rst_list;
+ int num_rsts;
+
+ struct udphy_grf_cfg grfcfg;
+ int (*combophy_init)(struct rockchip_udphy *udphy);
+};
+
+struct rockchip_udphy {
+ struct udevice *dev;
+ struct regmap *pma_regmap;
+ struct regmap *u2phygrf;
+ struct regmap *udphygrf;
+ struct regmap *usbgrf;
+ struct regmap *vogrf;
+
+ /* clocks and rests */
+ struct reset_ctl *rsts;
+
+ /* PHY status management */
+ bool flip;
+ bool mode_change;
+ u8 mode;
+ u8 status;
+
+ /* utilized for USB */
+ bool hs; /* flag for high-speed */
+
+ /* utilized for DP */
+ struct gpio_desc *sbu1_dc_gpio;
+ struct gpio_desc *sbu2_dc_gpio;
+ u32 lane_mux_sel[4];
+ u32 dp_lane_sel[4];
+ u32 dp_aux_dout_sel;
+ u32 dp_aux_din_sel;
+ int id;
+
+ /* PHY const config */
+ const struct rockchip_udphy_cfg *cfgs;
+};
+
+static const struct reg_sequence rk3588_udphy_24m_refclk_cfg[] = {
+ {0x0090, 0x68}, {0x0094, 0x68},
+ {0x0128, 0x24}, {0x012c, 0x44},
+ {0x0130, 0x3f}, {0x0134, 0x44},
+ {0x015c, 0xa9}, {0x0160, 0x71},
+ {0x0164, 0x71}, {0x0168, 0xa9},
+ {0x0174, 0xa9}, {0x0178, 0x71},
+ {0x017c, 0x71}, {0x0180, 0xa9},
+ {0x018c, 0x41}, {0x0190, 0x00},
+ {0x0194, 0x05}, {0x01ac, 0x2a},
+ {0x01b0, 0x17}, {0x01b4, 0x17},
+ {0x01b8, 0x2a}, {0x01c8, 0x04},
+ {0x01cc, 0x08}, {0x01d0, 0x08},
+ {0x01d4, 0x04}, {0x01d8, 0x20},
+ {0x01dc, 0x01}, {0x01e0, 0x09},
+ {0x01e4, 0x03}, {0x01f0, 0x29},
+ {0x01f4, 0x02}, {0x01f8, 0x02},
+ {0x01fc, 0x29}, {0x0208, 0x2a},
+ {0x020c, 0x17}, {0x0210, 0x17},
+ {0x0214, 0x2a}, {0x0224, 0x20},
+ {0x03f0, 0x0d}, {0x03f4, 0x09},
+ {0x03f8, 0x09}, {0x03fc, 0x0d},
+ {0x0404, 0x0e}, {0x0408, 0x14},
+ {0x040c, 0x14}, {0x0410, 0x3b},
+ {0x0ce0, 0x68}, {0x0ce8, 0xd0},
+ {0x0cf0, 0x87}, {0x0cf8, 0x70},
+ {0x0d00, 0x70}, {0x0d08, 0xa9},
+ {0x1ce0, 0x68}, {0x1ce8, 0xd0},
+ {0x1cf0, 0x87}, {0x1cf8, 0x70},
+ {0x1d00, 0x70}, {0x1d08, 0xa9},
+ {0x0a3c, 0xd0}, {0x0a44, 0xd0},
+ {0x0a48, 0x01}, {0x0a4c, 0x0d},
+ {0x0a54, 0xe0}, {0x0a5c, 0xe0},
+ {0x0a64, 0xa8}, {0x1a3c, 0xd0},
+ {0x1a44, 0xd0}, {0x1a48, 0x01},
+ {0x1a4c, 0x0d}, {0x1a54, 0xe0},
+ {0x1a5c, 0xe0}, {0x1a64, 0xa8}
+};
+
+static const struct reg_sequence rk3588_udphy_init_sequence[] = {
+ {0x0104, 0x44}, {0x0234, 0xE8},
+ {0x0248, 0x44}, {0x028C, 0x18},
+ {0x081C, 0xE5}, {0x0878, 0x00},
+ {0x0994, 0x1C}, {0x0AF0, 0x00},
+ {0x181C, 0xE5}, {0x1878, 0x00},
+ {0x1994, 0x1C}, {0x1AF0, 0x00},
+ {0x0428, 0x60}, {0x0D58, 0x33},
+ {0x1D58, 0x33}, {0x0990, 0x74},
+ {0x0D64, 0x17}, {0x08C8, 0x13},
+ {0x1990, 0x74}, {0x1D64, 0x17},
+ {0x18C8, 0x13}, {0x0D90, 0x40},
+ {0x0DA8, 0x40}, {0x0DC0, 0x40},
+ {0x0DD8, 0x40}, {0x1D90, 0x40},
+ {0x1DA8, 0x40}, {0x1DC0, 0x40},
+ {0x1DD8, 0x40}, {0x03C0, 0x30},
+ {0x03C4, 0x06}, {0x0E10, 0x00},
+ {0x1E10, 0x00}, {0x043C, 0x0F},
+ {0x0D2C, 0xFF}, {0x1D2C, 0xFF},
+ {0x0D34, 0x0F}, {0x1D34, 0x0F},
+ {0x08FC, 0x2A}, {0x0914, 0x28},
+ {0x0A30, 0x03}, {0x0E38, 0x05},
+ {0x0ECC, 0x27}, {0x0ED0, 0x22},
+ {0x0ED4, 0x26}, {0x18FC, 0x2A},
+ {0x1914, 0x28}, {0x1A30, 0x03},
+ {0x1E38, 0x05}, {0x1ECC, 0x27},
+ {0x1ED0, 0x22}, {0x1ED4, 0x26},
+ {0x0048, 0x0F}, {0x0060, 0x3C},
+ {0x0064, 0xF7}, {0x006C, 0x20},
+ {0x0070, 0x7D}, {0x0074, 0x68},
+ {0x0AF4, 0x1A}, {0x1AF4, 0x1A},
+ {0x0440, 0x3F}, {0x10D4, 0x08},
+ {0x20D4, 0x08}, {0x00D4, 0x30},
+ {0x0024, 0x6e},
+};
+
+static inline int grfreg_write(struct regmap *base,
+ const struct udphy_grf_reg *reg, bool en)
+{
+ u32 val, mask, tmp;
+
+ tmp = en ? reg->enable : reg->disable;
+ mask = GENMASK(reg->bitend, reg->bitstart);
+ val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT);
+
+ return regmap_write(base, reg->offset, val);
+}
+
+static int __regmap_multi_reg_write(struct regmap *map,
+ const struct reg_sequence *regs,
+ int num_regs)
+{
+ int i, ret = 0;
+
+ for (i = 0; i < num_regs; i++) {
+ ret = regmap_write(map, regs[i].reg, regs[i].def);
+
+ if (regs[i].delay_us)
+ udelay(regs[i].delay_us);
+ }
+
+ return ret;
+}
+
+static int udphy_clk_init(struct rockchip_udphy *udphy, struct udevice *dev)
+{
+ return 0;
+}
+
+static int udphy_reset_init(struct rockchip_udphy *udphy, struct udevice *dev)
+{
+ const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
+ int idx;
+ int ret;
+
+ udphy->rsts = devm_kcalloc(dev, cfg->num_rsts,
+ sizeof(*udphy->rsts), GFP_KERNEL);
+ if (!udphy->rsts)
+ return -ENOMEM;
+
+ for (idx = 0; idx < cfg->num_rsts; idx++) {
+ const char *name = cfg->rst_list[idx];
+
+ ret = reset_get_by_name(dev, name, &udphy->rsts[idx]);
+ if (ret) {
+ dev_err(dev, "failed to get %s reset\n", name);
+ goto err;
+ }
+
+ reset_assert(&udphy->rsts[idx]);
+ }
+
+ return 0;
+
+err:
+ devm_kfree(dev, udphy->rsts);
+ return ret;
+}
+
+static int udphy_get_rst_idx(const char * const *list, int num, char *name)
+{
+ int idx;
+
+ for (idx = 0; idx < num; idx++) {
+ if (!strcmp(list[idx], name))
+ return idx;
+ }
+
+ return -EINVAL;
+}
+
+static int udphy_reset_assert(struct rockchip_udphy *udphy, char *name)
+{
+ const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
+ int idx;
+
+ idx = udphy_get_rst_idx(cfg->rst_list, cfg->num_rsts, name);
+ if (idx < 0)
+ return idx;
+
+ return reset_assert(&udphy->rsts[idx]);
+}
+
+static int udphy_reset_deassert(struct rockchip_udphy *udphy, char *name)
+{
+ const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
+ int idx;
+
+ idx = udphy_get_rst_idx(cfg->rst_list, cfg->num_rsts, name);
+ if (idx < 0)
+ return idx;
+
+ return reset_deassert(&udphy->rsts[idx]);
+}
+
+static void udphy_u3_port_disable(struct rockchip_udphy *udphy, u8 disable)
+{
+ const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
+ const struct udphy_grf_reg *preg;
+
+ preg = udphy->id ? &cfg->grfcfg.usb3otg1_cfg : &cfg->grfcfg.usb3otg0_cfg;
+ grfreg_write(udphy->usbgrf, preg, disable);
+}
+
+__maybe_unused
+static void udphy_usb_bvalid_enable(struct rockchip_udphy *udphy, u8 enable)
+{
+ const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
+
+ grfreg_write(udphy->u2phygrf, &cfg->grfcfg.bvalid_phy_con, enable);
+ grfreg_write(udphy->u2phygrf, &cfg->grfcfg.bvalid_grf_con, enable);
+}
+
+/*
+ * In usb/dp combo phy driver, here are 2 ways to mapping lanes.
+ *
+ * 1 Type-C Mapping table (DP_Alt_Mode V1.0b remove ABF pin mapping)
+ * ---------------------------------------------------------------------------
+ * Type-C Pin B11-B10 A2-A3 A11-A10 B2-B3
+ * PHY Pad ln0(tx/rx) ln1(tx) ln2(tx/rx) ln3(tx)
+ * C/E(Normal) dpln3 dpln2 dpln0 dpln1
+ * C/E(Flip ) dpln0 dpln1 dpln3 dpln2
+ * D/F(Normal) usbrx usbtx dpln0 dpln1
+ * D/F(Flip ) dpln0 dpln1 usbrx usbtx
+ * A(Normal ) dpln3 dpln1 dpln2 dpln0
+ * A(Flip ) dpln2 dpln0 dpln3 dpln1
+ * B(Normal ) usbrx usbtx dpln1 dpln0
+ * B(Flip ) dpln1 dpln0 usbrx usbtx
+ * ---------------------------------------------------------------------------
+ *
+ * 2 Mapping the lanes in dtsi
+ * if all 4 lane assignment for dp function, define rockchip,dp-lane-mux = <x x x x>;
+ * sample as follow:
+ * ---------------------------------------------------------------------------
+ * B11-B10 A2-A3 A11-A10 B2-B3
+ * rockchip,dp-lane-mux ln0(tx/rx) ln1(tx) ln2(tx/rx) ln3(tx)
+ * <0 1 2 3> dpln0 dpln1 dpln2 dpln3
+ * <2 3 0 1> dpln2 dpln3 dpln0 dpln1
+ * ---------------------------------------------------------------------------
+ * if 2 lane for dp function, 2 lane for usb function, define rockchip,dp-lane-mux = <x x>;
+ * sample as follow:
+ * ---------------------------------------------------------------------------
+ * B11-B10 A2-A3 A11-A10 B2-B3
+ * rockchip,dp-lane-mux ln0(tx/rx) ln1(tx) ln2(tx/rx) ln3(tx)
+ * <0 1> dpln0 dpln1 usbrx usbtx
+ * <2 3> usbrx usbtx dpln0 dpln1
+ * ---------------------------------------------------------------------------
+ */
+
+__maybe_unused
+static int upphy_set_typec_default_mapping(struct rockchip_udphy *udphy)
+{
+ if (udphy->flip) {
+ udphy->dp_lane_sel[0] = 0;
+ udphy->dp_lane_sel[1] = 1;
+ udphy->dp_lane_sel[2] = 3;
+ udphy->dp_lane_sel[3] = 2;
+ udphy->lane_mux_sel[0] = PHY_LANE_MUX_DP;
+ udphy->lane_mux_sel[1] = PHY_LANE_MUX_DP;
+ udphy->lane_mux_sel[2] = PHY_LANE_MUX_USB;
+ udphy->lane_mux_sel[3] = PHY_LANE_MUX_USB;
+ udphy->dp_aux_dout_sel = PHY_AUX_DP_DATA_POL_INVERT;
+ udphy->dp_aux_din_sel = PHY_AUX_DP_DATA_POL_INVERT;
+ } else {
+ udphy->dp_lane_sel[0] = 2;
+ udphy->dp_lane_sel[1] = 3;
+ udphy->dp_lane_sel[2] = 1;
+ udphy->dp_lane_sel[3] = 0;
+ udphy->lane_mux_sel[0] = PHY_LANE_MUX_USB;
+ udphy->lane_mux_sel[1] = PHY_LANE_MUX_USB;
+ udphy->lane_mux_sel[2] = PHY_LANE_MUX_DP;
+ udphy->lane_mux_sel[3] = PHY_LANE_MUX_DP;
+ udphy->dp_aux_dout_sel = PHY_AUX_DP_DATA_POL_NORMAL;
+ udphy->dp_aux_din_sel = PHY_AUX_DP_DATA_POL_NORMAL;
+ }
+
+ udphy->mode = UDPHY_MODE_DP_USB;
+
+ return 0;
+}
+
+static int udphy_setup(struct rockchip_udphy *udphy)
+{
+ const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
+ int ret = 0;
+
+ if (cfg->combophy_init) {
+ ret = cfg->combophy_init(udphy);
+ if (ret)
+ dev_err(udphy->dev, "failed to init usbdp combophy\n");
+ }
+
+ return ret;
+}
+
+static int udphy_disable(struct rockchip_udphy *udphy)
+{
+ const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
+ int i;
+
+ for (i = 0; i < cfg->num_rsts; i++)
+ reset_assert(&udphy->rsts[i]);
+
+ return 0;
+}
+
+static int udphy_parse_lane_mux_data(struct rockchip_udphy *udphy,
+ const struct device_node *np)
+{
+ struct property *prop;
+ int ret, i, len, num_lanes;
+
+ prop = of_find_property(np, "rockchip,dp-lane-mux", &len);
+ if (!prop) {
+ dev_dbg(udphy->dev,
+ "failed to find dp lane mux, following dp alt mode\n");
+ udphy->mode = UDPHY_MODE_USB;
+ return 0;
+ }
+
+ num_lanes = len / sizeof(u32);
+
+ if (num_lanes != 2 && num_lanes != 4) {
+ dev_err(udphy->dev, "invalid number of lane mux\n");
+ return -EINVAL;
+ }
+
+ ret = of_read_u32_array(np, "rockchip,dp-lane-mux", udphy->dp_lane_sel,
+ num_lanes);
+ if (ret) {
+ dev_err(udphy->dev, "get dp lane mux failed\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < num_lanes; i++) {
+ int j;
+
+ if (udphy->dp_lane_sel[i] > 3) {
+ dev_err(udphy->dev,
+ "lane mux between 0 and 3, exceeding the range\n");
+ return -EINVAL;
+ }
+
+ udphy->lane_mux_sel[udphy->dp_lane_sel[i]] = PHY_LANE_MUX_DP;
+
+ for (j = i + 1; j < num_lanes; j++) {
+ if (udphy->dp_lane_sel[i] == udphy->dp_lane_sel[j]) {
+ dev_err(udphy->dev,
+ "set repeat lane mux value\n");
+ return -EINVAL;
+ }
+ }
+ }
+
+ udphy->mode = UDPHY_MODE_DP;
+ if (num_lanes == 2)
+ udphy->mode |= UDPHY_MODE_USB;
+
+ return 0;
+}
+
+static int udphy_parse_dt(struct rockchip_udphy *udphy, struct udevice *dev)
+{
+ const struct device_node *np = ofnode_to_np(dev_ofnode(dev));
+ enum usb_device_speed maximum_speed;
+ int ret;
+
+ udphy->u2phygrf = syscon_regmap_lookup_by_phandle(dev,
+ "rockchip,u2phy-grf");
+ if (IS_ERR(udphy->u2phygrf)) {
+ if (PTR_ERR(udphy->u2phygrf) == -ENODEV) {
+ dev_warn(dev, "missing u2phy-grf dt node\n");
+ udphy->u2phygrf = NULL;
+ } else {
+ return PTR_ERR(udphy->u2phygrf);
+ }
+ }
+
+ udphy->udphygrf = syscon_regmap_lookup_by_phandle(dev,
+ "rockchip,usbdpphy-grf");
+ if (IS_ERR(udphy->udphygrf)) {
+ if (PTR_ERR(udphy->udphygrf) == -ENODEV) {
+ dev_warn(dev, "missing usbdpphy-grf dt node\n");
+ udphy->udphygrf = NULL;
+ } else {
+ return PTR_ERR(udphy->udphygrf);
+ }
+ }
+
+ udphy->usbgrf = syscon_regmap_lookup_by_phandle(dev,
+ "rockchip,usb-grf");
+ if (IS_ERR(udphy->usbgrf)) {
+ if (PTR_ERR(udphy->usbgrf) == -ENODEV) {
+ dev_warn(dev, "missing usb-grf dt node\n");
+ udphy->usbgrf = NULL;
+ } else {
+ return PTR_ERR(udphy->usbgrf);
+ }
+ }
+
+ udphy->vogrf = syscon_regmap_lookup_by_phandle(dev, "rockchip,vo-grf");
+ if (IS_ERR(udphy->vogrf)) {
+ if (PTR_ERR(udphy->vogrf) == -ENODEV) {
+ dev_warn(dev, "missing vo-grf dt node\n");
+ udphy->vogrf = NULL;
+ } else {
+ return PTR_ERR(udphy->vogrf);
+ }
+ }
+
+ ret = udphy_parse_lane_mux_data(udphy, np);
+ if (ret)
+ return ret;
+
+ if (dev_read_prop(dev, "maximum-speed", NULL)) {
+ maximum_speed = usb_get_maximum_speed(dev_ofnode(dev));
+ udphy->hs = maximum_speed <= USB_SPEED_HIGH ? true : false;
+ }
+
+ ret = udphy_clk_init(udphy, dev);
+ if (ret)
+ return ret;
+
+ ret = udphy_reset_init(udphy, dev);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int udphy_power_on(struct rockchip_udphy *udphy, u8 mode)
+{
+ int ret;
+
+ if (!(udphy->mode & mode)) {
+ dev_info(udphy->dev, "mode 0x%02x is not support\n", mode);
+ return 0;
+ }
+
+ if (udphy->status == UDPHY_MODE_NONE) {
+ udphy->mode_change = false;
+ ret = udphy_setup(udphy);
+ if (ret)
+ return ret;
+
+ if (udphy->mode & UDPHY_MODE_USB)
+ udphy_u3_port_disable(udphy, false);
+ } else if (udphy->mode_change) {
+ udphy->mode_change = false;
+ udphy->status = UDPHY_MODE_NONE;
+ if (udphy->mode == UDPHY_MODE_DP)
+ udphy_u3_port_disable(udphy, true);
+
+ ret = udphy_disable(udphy);
+ if (ret)
+ return ret;
+ ret = udphy_setup(udphy);
+ if (ret)
+ return ret;
+ }
+
+ udphy->status |= mode;
+
+ return 0;
+}
+
+static int udphy_power_off(struct rockchip_udphy *udphy, u8 mode)
+{
+ int ret;
+
+ if (!(udphy->mode & mode)) {
+ dev_info(udphy->dev, "mode 0x%02x is not supported\n", mode);
+ return 0;
+ }
+
+ if (!udphy->status)
+ return 0;
+
+ udphy->status &= ~mode;
+
+ if (udphy->status == UDPHY_MODE_NONE) {
+ ret = udphy_disable(udphy);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int rockchip_u3phy_init(struct phy *phy)
+{
+ struct udevice *parent = phy->dev->parent;
+ struct rockchip_udphy *udphy = dev_get_priv(parent);
+
+ /* DP only or high-speed, disable U3 port */
+ if (!(udphy->mode & UDPHY_MODE_USB) || udphy->hs) {
+ udphy_u3_port_disable(udphy, true);
+ return 0;
+ }
+
+ return udphy_power_on(udphy, UDPHY_MODE_USB);
+}
+
+static int rockchip_u3phy_exit(struct phy *phy)
+{
+ struct udevice *parent = phy->dev->parent;
+ struct rockchip_udphy *udphy = dev_get_priv(parent);
+
+ /* DP only or high-speed */
+ if (!(udphy->mode & UDPHY_MODE_USB) || udphy->hs)
+ return 0;
+
+ return udphy_power_off(udphy, UDPHY_MODE_USB);
+}
+
+static const struct phy_ops rockchip_u3phy_ops = {
+ .init = rockchip_u3phy_init,
+ .exit = rockchip_u3phy_exit,
+};
+
+int rockchip_u3phy_uboot_init(void)
+{
+ struct udevice *udev;
+ struct rockchip_udphy *udphy;
+ int ret;
+
+ ret = uclass_get_device_by_driver(UCLASS_PHY,
+ DM_DRIVER_GET(rockchip_udphy_u3_port),
+ &udev);
+ if (ret) {
+ pr_err("%s: get u3-port failed: %d\n", __func__, ret);
+ return ret;
+ }
+
+ /* DP only or high-speed, disable U3 port */
+ udphy = dev_get_priv(udev->parent);
+ if (!(udphy->mode & UDPHY_MODE_USB) || udphy->hs) {
+ udphy_u3_port_disable(udphy, true);
+ return 0;
+ }
+
+ return udphy_power_on(udphy, UDPHY_MODE_USB);
+}
+
+static int rockchip_udphy_probe(struct udevice *dev)
+{
+ const struct device_node *np = ofnode_to_np(dev_ofnode(dev));
+ struct rockchip_udphy *udphy = dev_get_priv(dev);
+ const struct rockchip_udphy_cfg *phy_cfgs;
+ int id, ret;
+
+ udphy->dev = dev;
+
+ id = of_alias_get_id(np, "usbdp");
+ if (id < 0)
+ id = 0;
+ udphy->id = id;
+
+ phy_cfgs = (const struct rockchip_udphy_cfg *)dev_get_driver_data(dev);
+ if (!phy_cfgs) {
+ dev_err(dev, "unable to get phy_cfgs\n");
+ return -EINVAL;
+ }
+ udphy->cfgs = phy_cfgs;
+
+ ret = regmap_init_mem(dev_ofnode(dev), &udphy->pma_regmap);
+ if (ret)
+ return ret;
+ udphy->pma_regmap->ranges[0].start += UDPHY_PMA;
+
+ ret = udphy_parse_dt(udphy, dev);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int rockchip_udphy_bind(struct udevice *parent)
+{
+ struct udevice *child;
+ ofnode subnode;
+ const char *node_name;
+ int ret;
+
+ dev_for_each_subnode(subnode, parent) {
+ if (!ofnode_valid(subnode)) {
+ printf("%s: no subnode for %s", __func__, parent->name);
+ return -ENXIO;
+ }
+
+ node_name = ofnode_get_name(subnode);
+ debug("%s: subnode %s\n", __func__, node_name);
+
+ /* if there is no match, continue */
+ if (strcasecmp(node_name, "usb3-port"))
+ continue;
+
+ /* node name is usb3-port */
+ ret = device_bind_driver_to_node(parent,
+ "rockchip_udphy_u3_port",
+ node_name, subnode, &child);
+ if (ret) {
+ printf("%s: '%s' cannot bind its driver\n",
+ __func__, node_name);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int rk3588_udphy_refclk_set(struct rockchip_udphy *udphy)
+{
+ /* configure phy reference clock */
+ return __regmap_multi_reg_write(udphy->pma_regmap,
+ rk3588_udphy_24m_refclk_cfg,
+ ARRAY_SIZE(rk3588_udphy_24m_refclk_cfg));
+}
+
+static int rk3588_udphy_status_check(struct rockchip_udphy *udphy)
+{
+ unsigned int val;
+ int ret;
+
+ if (!(udphy->mode & UDPHY_MODE_USB))
+ return 0;
+
+ /* LCPLL check */
+ ret = regmap_read_poll_timeout(udphy->pma_regmap,
+ CMN_ANA_LCPLL_DONE_OFFSET,
+ val, (val & CMN_ANA_LCPLL_AFC_DONE) &&
+ (val & CMN_ANA_LCPLL_LOCK_DONE),
+ 200, 100);
+ if (ret) {
+ dev_err(udphy->dev, "cmn ana lcpll lock timeout\n");
+ return ret;
+ }
+
+ if (!udphy->flip) {
+ ret = regmap_read_poll_timeout(udphy->pma_regmap,
+ TRSV_LN0_MON_RX_CDR_DONE_OFFSET,
+ val,
+ val & TRSV_LN0_MON_RX_CDR_LOCK_DONE,
+ 200, 100);
+ if (ret)
+ dev_err(udphy->dev, "trsv ln0 mon rx cdr lock timeout\n");
+ } else {
+ ret = regmap_read_poll_timeout(udphy->pma_regmap,
+ TRSV_LN2_MON_RX_CDR_DONE_OFFSET,
+ val,
+ val & TRSV_LN2_MON_RX_CDR_LOCK_DONE,
+ 200, 100);
+ if (ret)
+ dev_err(udphy->dev, "trsv ln2 mon rx cdr lock timeout\n");
+ }
+
+ return 0;
+}
+
+static int rk3588_udphy_init(struct rockchip_udphy *udphy)
+{
+ const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
+ int ret;
+
+ /* enable rx lfps for usb */
+ if (udphy->mode & UDPHY_MODE_USB)
+ grfreg_write(udphy->udphygrf, &cfg->grfcfg.rx_lfps, true);
+
+ /* Step 1: power on pma and deassert apb rstn */
+ grfreg_write(udphy->udphygrf, &cfg->grfcfg.low_pwrn, true);
+
+ udphy_reset_deassert(udphy, "pma_apb");
+ udphy_reset_deassert(udphy, "pcs_apb");
+
+ /* Step 2: set init sequence and phy refclk */
+ ret = __regmap_multi_reg_write(udphy->pma_regmap,
+ rk3588_udphy_init_sequence,
+ ARRAY_SIZE(rk3588_udphy_init_sequence));
+ if (ret) {
+ dev_err(udphy->dev, "init sequence set error %d\n", ret);
+ goto assert_apb;
+ }
+
+ ret = rk3588_udphy_refclk_set(udphy);
+ if (ret) {
+ dev_err(udphy->dev, "refclk set error %d\n", ret);
+ goto assert_apb;
+ }
+
+ /* Step 3: configure lane mux */
+ regmap_update_bits(udphy->pma_regmap, CMN_LANE_MUX_AND_EN_OFFSET,
+ CMN_DP_LANE_MUX_ALL | CMN_DP_LANE_EN_ALL,
+ FIELD_PREP(CMN_DP_LANE_MUX_N(3),
+ udphy->lane_mux_sel[3]) |
+ FIELD_PREP(CMN_DP_LANE_MUX_N(2),
+ udphy->lane_mux_sel[2]) |
+ FIELD_PREP(CMN_DP_LANE_MUX_N(1),
+ udphy->lane_mux_sel[1]) |
+ FIELD_PREP(CMN_DP_LANE_MUX_N(0),
+ udphy->lane_mux_sel[0]) |
+ FIELD_PREP(CMN_DP_LANE_EN_ALL, 0));
+
+ /* Step 4: deassert init rstn and wait for 200ns from datasheet */
+ if (udphy->mode & UDPHY_MODE_USB)
+ udphy_reset_deassert(udphy, "init");
+
+ if (udphy->mode & UDPHY_MODE_DP) {
+ regmap_update_bits(udphy->pma_regmap, CMN_DP_RSTN_OFFSET,
+ CMN_DP_INIT_RSTN,
+ FIELD_PREP(CMN_DP_INIT_RSTN, 0x1));
+ }
+
+ udelay(1);
+
+ /* Step 5: deassert cmn/lane rstn */
+ if (udphy->mode & UDPHY_MODE_USB) {
+ udphy_reset_deassert(udphy, "cmn");
+ udphy_reset_deassert(udphy, "lane");
+ }
+
+ /* Step 6: wait for lock done of pll */
+ ret = rk3588_udphy_status_check(udphy);
+ if (ret)
+ goto assert_phy;
+
+ return 0;
+
+assert_phy:
+ udphy_reset_assert(udphy, "init");
+ udphy_reset_assert(udphy, "cmn");
+ udphy_reset_assert(udphy, "lane");
+
+assert_apb:
+ udphy_reset_assert(udphy, "pma_apb");
+ udphy_reset_assert(udphy, "pcs_apb");
+
+ return ret;
+}
+
+static const char * const rk3588_udphy_rst_l[] = {
+ "init", "cmn", "lane", "pcs_apb", "pma_apb"
+};
+
+static const struct rockchip_udphy_cfg rk3588_udphy_cfgs = {
+ .num_rsts = ARRAY_SIZE(rk3588_udphy_rst_l),
+ .rst_list = rk3588_udphy_rst_l,
+ .grfcfg = {
+ /* u2phy-grf */
+ .bvalid_phy_con = { 0x0008, 1, 0, 0x2, 0x3 },
+ .bvalid_grf_con = { 0x0010, 3, 2, 0x2, 0x3 },
+
+ /* usb-grf */
+ .usb3otg0_cfg = { 0x001c, 15, 0, 0x1100, 0x0188 },
+ .usb3otg1_cfg = { 0x0034, 15, 0, 0x1100, 0x0188 },
+
+ /* usbdpphy-grf */
+ .low_pwrn = { 0x0004, 13, 13, 0, 1 },
+ .rx_lfps = { 0x0004, 14, 14, 0, 1 },
+ },
+ .combophy_init = rk3588_udphy_init,
+};
+
+static const struct udevice_id rockchip_udphy_dt_match[] = {
+ {
+ .compatible = "rockchip,rk3588-usbdp-phy",
+ .data = (ulong)&rk3588_udphy_cfgs
+ },
+ { /* sentinel */ }
+};
+
+U_BOOT_DRIVER(rockchip_udphy_u3_port) = {
+ .name = "rockchip_udphy_u3_port",
+ .id = UCLASS_PHY,
+ .ops = &rockchip_u3phy_ops,
+};
+
+U_BOOT_DRIVER(rockchip_udphy) = {
+ .name = "rockchip_udphy",
+ .id = UCLASS_PHY,
+ .of_match = rockchip_udphy_dt_match,
+ .probe = rockchip_udphy_probe,
+ .bind = rockchip_udphy_bind,
+ .priv_auto = sizeof(struct rockchip_udphy),
+};
projects / u-boot.git / commitdiff
