phy: rockchip: inno-usb2: Add usb2 phy support for rk3562

RK3652 has one USB2.0 PHY with two ports, the OTG port support OTG
and BC1.2, the SoC provide USB GRF and APB to access the registers.

This adds vbus detection function control and make the below tuning
to enhance the usb2-phy SQ for RK3562 SoC.
 - enable pre-emphasis during non-chirp phase
 - set HS eye height to 425mv

Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: William Wu <william.wu@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20250415050005.52773-2-kever.yang@rock-chips.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index 32fdd64..b0f2369 100644 (file)
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -1923,6 +1923,54 @@ static const struct rockchip_usb2phy_cfg rk3399_phy_cfgs[] = {
        { /* sentinel */ }
 };
 
+static const struct rockchip_usb2phy_cfg rk3562_phy_cfgs[] = {
+       {
+               .reg = 0xff740000,
+               .num_ports      = 2,
+               .clkout_ctl     = { 0x0108, 4, 4, 1, 0 },
+               .port_cfgs      = {
+                       [USB2PHY_PORT_OTG] = {
+                               .phy_sus        = { 0x0100, 8, 0, 0, 0x1d1 },
+                               .bvalid_det_en  = { 0x0110, 2, 2, 0, 1 },
+                               .bvalid_det_st  = { 0x0114, 2, 2, 0, 1 },
+                               .bvalid_det_clr = { 0x0118, 2, 2, 0, 1 },
+                               .idfall_det_en  = { 0x0110, 5, 5, 0, 1 },
+                               .idfall_det_st  = { 0x0114, 5, 5, 0, 1 },
+                               .idfall_det_clr = { 0x0118, 5, 5, 0, 1 },
+                               .idrise_det_en  = { 0x0110, 4, 4, 0, 1 },
+                               .idrise_det_st  = { 0x0114, 4, 4, 0, 1 },
+                               .idrise_det_clr = { 0x0118, 4, 4, 0, 1 },
+                               .ls_det_en      = { 0x0110, 0, 0, 0, 1 },
+                               .ls_det_st      = { 0x0114, 0, 0, 0, 1 },
+                               .ls_det_clr     = { 0x0118, 0, 0, 0, 1 },
+                               .utmi_avalid    = { 0x0120, 10, 10, 0, 1 },
+                               .utmi_bvalid    = { 0x0120, 9, 9, 0, 1 },
+                               .utmi_ls        = { 0x0120, 5, 4, 0, 1 },
+                       },
+                       [USB2PHY_PORT_HOST] = {
+                               .phy_sus        = { 0x0104, 8, 0, 0x1d2, 0x1d1 },
+                               .ls_det_en      = { 0x0110, 1, 1, 0, 1 },
+                               .ls_det_st      = { 0x0114, 1, 1, 0, 1 },
+                               .ls_det_clr     = { 0x0118, 1, 1, 0, 1 },
+                               .utmi_ls        = { 0x0120, 17, 16, 0, 1 },
+                               .utmi_hstdet    = { 0x0120, 19, 19, 0, 1 }
+                       }
+               },
+               .chg_det = {
+                       .cp_det         = { 0x0120, 24, 24, 0, 1 },
+                       .dcp_det        = { 0x0120, 23, 23, 0, 1 },
+                       .dp_det         = { 0x0120, 25, 25, 0, 1 },
+                       .idm_sink_en    = { 0x0108, 8, 8, 0, 1 },
+                       .idp_sink_en    = { 0x0108, 7, 7, 0, 1 },
+                       .idp_src_en     = { 0x0108, 9, 9, 0, 1 },
+                       .rdm_pdwn_en    = { 0x0108, 10, 10, 0, 1 },
+                       .vdm_src_en     = { 0x0108, 12, 12, 0, 1 },
+                       .vdp_src_en     = { 0x0108, 11, 11, 0, 1 },
+               },
+       },
+       { /* sentinel */ }
+};
+
 static const struct rockchip_usb2phy_cfg rk3568_phy_cfgs[] = {
        {
                .reg = 0xfe8a0000,
@@ -2242,6 +2290,7 @@ static const struct of_device_id rockchip_usb2phy_dt_match[] = {
        { .compatible = "rockchip,rk3328-usb2phy", .data = &rk3328_phy_cfgs },
        { .compatible = "rockchip,rk3366-usb2phy", .data = &rk3366_phy_cfgs },
        { .compatible = "rockchip,rk3399-usb2phy", .data = &rk3399_phy_cfgs },
+       { .compatible = "rockchip,rk3562-usb2phy", .data = &rk3562_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 },