[RESEND PATCH 2/2] phy: rockchip: inno-usb2: Add usb2 phys support for rk3576

Frank Wang
2024-09-23T02:53:57Z

From: William Wu <william.wu@rock-chips.com>

The RK3576 SoC has two independent USB2.0 PHYs, and
each PHY has one port.

Signed-off-by: William Wu <william.wu@rock-chips.com>
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
---
drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 131 ++++++++++++++++--
1 file changed, 123 insertions(+), 8 deletions(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index 4f71373ae6e1a..51ca16cbb86cb 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -229,9 +229,10 @@ struct rockchip_usb2phy_port {
* @dev: pointer to device.
* @grf: General Register Files regmap.
* @usbgrf: USB General Register Files regmap.
- * @clk: clock struct of phy input clk.
+ * @clks: array of phy input clocks.
* @clk480m: clock struct of phy output clk.
* @clk480m_hw: clock struct of phy output clk management.
+ * @num_clks: number of phy input clocks.
* @phy_reset: phy reset control.
* @chg_state: states involved in USB charger detection.
* @chg_type: USB charger types.
@@ -246,9 +247,10 @@ struct rockchip_usb2phy {
struct device *dev;
struct regmap *grf;
struct regmap *usbgrf;
- struct clk *clk;
+ struct clk_bulk_data *clks;
struct clk *clk480m;
struct clk_hw clk480m_hw;
+ int num_clks;
struct reset_control *phy_reset;
enum usb_chg_state chg_state;
enum power_supply_type chg_type;
@@ -376,6 +378,7 @@ rockchip_usb2phy_clk480m_register(struct rockchip_usb2phy *rphy)
{
struct device_node *node = rphy->dev->of_node;
struct clk_init_data init;
+ struct clk *refclk = of_clk_get_by_name(node, "phyclk");
const char *clk_name;
int ret = 0;

@@ -386,8 +389,8 @@ rockchip_usb2phy_clk480m_register(struct rockchip_usb2phy *rphy)
/* optional override of the clockname */
of_property_read_string(node, "clock-output-names", &init.name);

- if (rphy->clk) {
- clk_name = __clk_get_name(rphy->clk);
+ if (!IS_ERR(refclk)) {
+ clk_name = __clk_get_name(refclk);
init.parent_names = &clk_name;
init.num_parents = 1;
} else {
@@ -1406,22 +1409,29 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
if (IS_ERR(rphy->phy_reset))
return PTR_ERR(rphy->phy_reset);

- rphy->clk = devm_clk_get_optional_enabled(dev, "phyclk");
- if (IS_ERR(rphy->clk)) {
- return dev_err_probe(&pdev->dev, PTR_ERR(rphy->clk),
+ ret = devm_clk_bulk_get_all(dev, &rphy->clks);
+ if (ret == -EPROBE_DEFER) {
+ return dev_err_probe(&pdev->dev, -EPROBE_DEFER,
"failed to get phyclk\n");
}

+ /* Clocks are optional */
+ rphy->num_clks = ret < 0 ? 0 : ret;
+
ret = rockchip_usb2phy_clk480m_register(rphy);
if (ret) {
dev_err(dev, "failed to register 480m output clock\n");
return ret;
}

+ ret = clk_bulk_prepare_enable(rphy->num_clks, rphy->clks);
+ if (ret)
+ return ret;
+
if (rphy->phy_cfg->phy_tuning) {
ret = rphy->phy_cfg->phy_tuning(rphy);
if (ret)
- return ret;
+ goto disable_clks;
}

index = 0;
@@ -1484,6 +1494,8 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)

put_child:
of_node_put(child_np);
+disable_clks:
+ clk_bulk_disable_unprepare(rphy->num_clks, rphy->clks);
return ret;
}

@@ -1495,6 +1507,30 @@ static int rk3128_usb2phy_tuning(struct rockchip_usb2phy *rphy)
BIT(2) << BIT_WRITEABLE_SHIFT | 0);
}

+static int rk3576_usb2phy_tuning(struct rockchip_usb2phy *rphy)
+{
+ int ret;
+ u32 reg = rphy->phy_cfg->reg;
+
+ /* Deassert SIDDQ to power on analog block */
+ ret = regmap_write(rphy->grf, reg + 0x0010, GENMASK(29, 29) | 0x0000);
+ if (ret)
+ return ret;
+
+ /* Do reset after exit IDDQ mode */
+ ret = rockchip_usb2phy_reset(rphy);
+ if (ret)
+ return ret;
+
+ /* HS DC Voltage Level Adjustment 4'b1001 : +5.89% */
+ ret |= regmap_write(rphy->grf, reg + 0x000c, GENMASK(27, 24) | 0x0900);
+
+ /* HS Transmitter Pre-Emphasis Current Control 2'b10 : 2x */
+ ret |= regmap_write(rphy->grf, reg + 0x0010, GENMASK(20, 19) | 0x0010);
+
+ return ret;
+}
+
static int rk3588_usb2phy_tuning(struct rockchip_usb2phy *rphy)
{
int ret;
@@ -1923,6 +1959,84 @@ static const struct rockchip_usb2phy_cfg rk3568_phy_cfgs[] = {
{ /* sentinel */ }
};

+static const struct rockchip_usb2phy_cfg rk3576_phy_cfgs[] = {
+ {
+ .reg = 0x0,
+ .num_ports = 1,
+ .phy_tuning = rk3576_usb2phy_tuning,
+ .clkout_ctl = { 0x0008, 0, 0, 1, 0 },
+ .port_cfgs = {
+ [USB2PHY_PORT_OTG] = {
+ .phy_sus = { 0x0000, 8, 0, 0, 0x1d1 },
+ .bvalid_det_en = { 0x00c0, 1, 1, 0, 1 },
+ .bvalid_det_st = { 0x00c4, 1, 1, 0, 1 },
+ .bvalid_det_clr = { 0x00c8, 1, 1, 0, 1 },
+ .ls_det_en = { 0x00c0, 0, 0, 0, 1 },
+ .ls_det_st = { 0x00c4, 0, 0, 0, 1 },
+ .ls_det_clr = { 0x00c8, 0, 0, 0, 1 },
+ .disfall_en = { 0x00c0, 6, 6, 0, 1 },
+ .disfall_st = { 0x00c4, 6, 6, 0, 1 },
+ .disfall_clr = { 0x00c8, 6, 6, 0, 1 },
+ .disrise_en = { 0x00c0, 5, 5, 0, 1 },
+ .disrise_st = { 0x00c4, 5, 5, 0, 1 },
+ .disrise_clr = { 0x00c8, 5, 5, 0, 1 },
+ .utmi_avalid = { 0x0080, 1, 1, 0, 1 },
+ .utmi_bvalid = { 0x0080, 0, 0, 0, 1 },
+ .utmi_ls = { 0x0080, 5, 4, 0, 1 },
+ }
+ },
+ .chg_det = {
+ .cp_det = { 0x0080, 8, 8, 0, 1 },
+ .dcp_det = { 0x0080, 8, 8, 0, 1 },
+ .dp_det = { 0x0080, 9, 9, 1, 0 },
+ .idm_sink_en = { 0x0010, 5, 5, 1, 0 },
+ .idp_sink_en = { 0x0010, 5, 5, 0, 1 },
+ .idp_src_en = { 0x0010, 14, 14, 0, 1 },
+ .rdm_pdwn_en = { 0x0010, 14, 14, 0, 1 },
+ .vdm_src_en = { 0x0010, 7, 6, 0, 3 },
+ .vdp_src_en = { 0x0010, 7, 6, 0, 3 },
+ },
+ },
+ {
+ .reg = 0x2000,
+ .num_ports = 1,
+ .phy_tuning = rk3576_usb2phy_tuning,
+ .clkout_ctl = { 0x2008, 0, 0, 1, 0 },
+ .port_cfgs = {
+ [USB2PHY_PORT_OTG] = {
+ .phy_sus = { 0x2000, 8, 0, 0, 0x1d1 },
+ .bvalid_det_en = { 0x20c0, 1, 1, 0, 1 },
+ .bvalid_det_st = { 0x20c4, 1, 1, 0, 1 },
+ .bvalid_det_clr = { 0x20c8, 1, 1, 0, 1 },
+ .ls_det_en = { 0x20c0, 0, 0, 0, 1 },
+ .ls_det_st = { 0x20c4, 0, 0, 0, 1 },
+ .ls_det_clr = { 0x20c8, 0, 0, 0, 1 },
+ .disfall_en = { 0x20c0, 6, 6, 0, 1 },
+ .disfall_st = { 0x20c4, 6, 6, 0, 1 },
+ .disfall_clr = { 0x20c8, 6, 6, 0, 1 },
+ .disrise_en = { 0x20c0, 5, 5, 0, 1 },
+ .disrise_st = { 0x20c4, 5, 5, 0, 1 },
+ .disrise_clr = { 0x20c8, 5, 5, 0, 1 },
+ .utmi_avalid = { 0x2080, 1, 1, 0, 1 },
+ .utmi_bvalid = { 0x2080, 0, 0, 0, 1 },
+ .utmi_ls = { 0x2080, 5, 4, 0, 1 },
+ }
+ },
+ .chg_det = {
+ .cp_det = { 0x2080, 8, 8, 0, 1 },
+ .dcp_det = { 0x2080, 8, 8, 0, 1 },
+ .dp_det = { 0x2080, 9, 9, 1, 0 },
+ .idm_sink_en = { 0x2010, 5, 5, 1, 0 },
+ .idp_sink_en = { 0x2010, 5, 5, 0, 1 },
+ .idp_src_en = { 0x2010, 14, 14, 0, 1 },
+ .rdm_pdwn_en = { 0x2010, 14, 14, 0, 1 },
+ .vdm_src_en = { 0x2010, 7, 6, 0, 3 },
+ .vdp_src_en = { 0x2010, 7, 6, 0, 3 },
+ },
+ },
+ { /* sentinel */ }
+};
+
static const struct rockchip_usb2phy_cfg rk3588_phy_cfgs[] = {
{
.reg = 0x0000,
@@ -2094,6 +2208,7 @@ static const struct of_device_id rockchip_usb2phy_dt_match[] = {
{ .compatible = "rockchip,rk3366-usb2phy", .data = &rk3366_phy_cfgs },
{ .compatible = "rockchip,rk3399-usb2phy", .data = &rk3399_phy_cfgs },
{ .compatible = "rockchip,rk3568-usb2phy", .data = &rk3568_phy_cfgs },
+ { .compatible = "rockchip,rk3576-usb2phy", .data = &rk3576_phy_cfgs },
{ .compatible = "rockchip,rk3588-usb2phy", .data = &rk3588_phy_cfgs },
{ .compatible = "rockchip,rv1108-usb2phy", .data = &rv1108_phy_cfgs },
{}
--
2.45.2