[PATCH v6 14/14] arm64: dts: rockchip: Enable eDP0 display on RK3588S EVB1 board

[Damon Ding <damon.ding@rock-chips.com>]

Add the necessary DT changes to enable eDP0 on RK3588S EVB1 board:
- Set pinctrl of pwm12 for backlight
- Enable edp0/hdptxphy0/vp2
- Assign the parent of DCLK_VOP2_SRC to PLL_V0PLL
- Add aux-bus/panel nodes

For RK3588, the PLL_V0PLL is specifically designed for the VOP2. This
means the clock rate of PLL_V0PLL can be adjusted according to the dclk
rate of relevant VP. It is typically assigned as the dclk source of a
specific VP when the clock of relevant display mode is unusual, such as
the eDP panel 'lg,lp079qx1-sp0v' paired with RK3588S EVB1, which has a
clock rate of 202.02MHz.

Signed-off-by: Damon Ding <damon.ding@rock-chips.com>

---

Changes in v2:
- Remove brightness-levels and default-brightness-level properties in
  backlight node.
- Add the detail DT changes to commit message.

Changes in v3:
- Use aux-bus instead of platform bus for edp-panel.

Changes in v4:
- Add comments related to the use of panel compatible "lg,lp079qx1-sp0v"
  in the commit message.

Changes in v5:
- Use "edp-panel" instead of "lg,lp079qx1-sp0v"
- Remove unnecessary comments in commit message
- Assign the parent of DCLK_VOP2_SRC to PLL_V0PLL

Changes in v6:
- Add PLL_V0PLL related descriptions in commit message
---
 .../boot/dts/rockchip/rk3588s-evb1-v10.dts    | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-evb1-v10.dts b/arch/arm64/boot/dts/rockchip/rk3588s-evb1-v10.dts
index bc4077575beb..a8c151b41e21 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588s-evb1-v10.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588s-evb1-v10.dts
@@ -9,6 +9,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/pinctrl/rockchip.h>
+#include <dt-bindings/soc/rockchip,vop2.h>
 #include <dt-bindings/usb/pd.h>
 #include "rk3588s.dtsi"
 
@@ -238,6 +239,41 @@ &combphy2_psu {
 	status = "okay";
 };
 
+&edp0 {
+	force-hpd;
+	status = "okay";
+
+	aux-bus {
+		panel {
+			compatible = "edp-panel";
+			backlight = <&backlight>;
+			power-supply = <&vcc3v3_lcd_edp>;
+
+			port {
+				panel_in_edp: endpoint {
+					remote-endpoint = <&edp_out_panel>;
+				};
+			};
+		};
+	};
+};
+
+&edp0_in {
+	edp0_in_vp2: endpoint {
+		remote-endpoint = <&vp2_out_edp0>;
+	};
+};
+
+&edp0_out {
+	edp_out_panel: endpoint {
+		remote-endpoint = <&panel_in_edp>;
+	};
+};
+
+&hdptxphy0 {
+	status = "okay";
+};
+
 &i2c3 {
 	status = "okay";
 
@@ -399,6 +435,7 @@ usbc0_int: usbc0-int {
 };
 
 &pwm12 {
+	pinctrl-0 = <&pwm12m1_pins>;
 	status = "okay";
 };
 
@@ -1168,3 +1205,20 @@ usbdp_phy0_dp_altmode_mux: endpoint@1 {
 		};
 	};
 };
+
+&vop_mmu {
+	status = "okay";
+};
+
+&vop {
+	assigned-clocks = <&cru DCLK_VOP2_SRC>;
+	assigned-clock-parents = <&cru PLL_V0PLL>;
+	status = "okay";
+};
+
+&vp2 {
+	vp2_out_edp0: endpoint@ROCKCHIP_VOP2_EP_EDP0 {
+		reg = <ROCKCHIP_VOP2_EP_EDP0>;
+		remote-endpoint = <&edp0_in_vp2>;
+	};
+};
-- 
2.34.1


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