drm/msm/dsi: Add PHY configuration for SC7280

The SC7280 SoC uses the 7nm (V4.1) DSI PHY driver with
different enable|disable regulator loads.
Signed-off-by: Rajeev Nandan <rajeevny@codeaurora.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/1624365748-24224-3-git-send-email-rajeevny@codeaurora.orgReviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/Kconfig

@@ -116,9 +116,9 @@ config DRM_MSM_DSI_10NM_PHY
 	  Choose this option if DSI PHY on SDM845 is used on the platform.
 
 config DRM_MSM_DSI_7NM_PHY
-	bool "Enable DSI 7nm PHY driver in MSM DRM (used by SM8150/SM8250)"
+	bool "Enable DSI 7nm PHY driver in MSM DRM"
 	depends on DRM_MSM_DSI
 	default y
 	help
-	  Choose this option if DSI PHY on SM8150/SM8250 is used on the
-	  platform.
+	  Choose this option if DSI PHY on SM8150/SM8250/SC7280 is used on
+	  the platform.

drivers/gpu/drm/msm/dsi/phy/dsi_phy.c

@@ -639,6 +639,8 @@ static const struct of_device_id dsi_phy_dt_match[] = {
 	  .data = &dsi_phy_7nm_cfgs },
 	{ .compatible = "qcom,dsi-phy-7nm-8150",
 	  .data = &dsi_phy_7nm_8150_cfgs },
+	{ .compatible = "qcom,sc7280-dsi-phy-7nm",
+	  .data = &dsi_phy_7nm_7280_cfgs },
 #endif
 	{}
 };

drivers/gpu/drm/msm/dsi/phy/dsi_phy.h

@@ -51,6 +51,7 @@ extern const struct msm_dsi_phy_cfg dsi_phy_10nm_cfgs;
 extern const struct msm_dsi_phy_cfg dsi_phy_10nm_8998_cfgs;
 extern const struct msm_dsi_phy_cfg dsi_phy_7nm_cfgs;
 extern const struct msm_dsi_phy_cfg dsi_phy_7nm_8150_cfgs;
+extern const struct msm_dsi_phy_cfg dsi_phy_7nm_7280_cfgs;
 
 struct msm_dsi_dphy_timing {
 	u32 clk_zero;

drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c

@@ -1063,3 +1063,29 @@ const struct msm_dsi_phy_cfg dsi_phy_7nm_8150_cfgs = {
 	.io_start = { 0xae94400, 0xae96400 },
 	.num_dsi_phy = 2,
 };
+
+const struct msm_dsi_phy_cfg dsi_phy_7nm_7280_cfgs = {
+	.has_phy_lane = true,
+	.reg_cfg = {
+		.num = 1,
+		.regs = {
+			{"vdds", 37550, 0},
+		},
+	},
+	.ops = {
+		.enable = dsi_7nm_phy_enable,
+		.disable = dsi_7nm_phy_disable,
+		.pll_init = dsi_pll_7nm_init,
+		.save_pll_state = dsi_7nm_pll_save_state,
+		.restore_pll_state = dsi_7nm_pll_restore_state,
+	},
+	.min_pll_rate = 600000000UL,
+#ifdef CONFIG_64BIT
+	.max_pll_rate = 5000000000ULL,
+#else
+	.max_pll_rate = ULONG_MAX,
+#endif
+	.io_start = { 0xae94400 },
+	.num_dsi_phy = 1,
+	.quirks = DSI_PHY_7NM_QUIRK_V4_1,
+};