Re: [PATCH v1 0/4] Add eDP support for RK3576

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

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On 3/10/2026 6:53 PM, Damon Ding wrote:
> These patchs have been tested with a 1536x2048p60 eDP panel on
> RK3576 EVB1 board (hardware modified specially).

The DTS changes are attached as an attachment.

> 
> Patch 1~2 are to add the RK3576 eDP node.
> Patch 3~4 are to support the RK3576 Analogix DP controller.
> 
> Damon Ding (4):
>    dt-bindings: display: rockchip: analogix-dp: Add support for RK3576
>    arm64: dts: rockchip: Add eDP node for RK3576
>    drm/bridge: analogix_dp: Add support for RK3576
>    drm/rockchip: analogix_dp: Add support for RK3576
> 
>   .../rockchip/rockchip,analogix-dp.yaml        |  6 +++-
>   arch/arm64/boot/dts/rockchip/rk3576.dtsi      | 28 +++++++++++++++++++
>   .../drm/bridge/analogix/analogix_dp_core.c    |  1 +
>   .../gpu/drm/rockchip/analogix_dp-rockchip.c   | 15 ++++++++++
>   include/drm/bridge/analogix_dp.h              |  3 +-
>   5 files changed, 51 insertions(+), 2 deletions(-)
> 

Best regards,
Damon

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From f4c8fe96b9731a4c1eb6321cde2449a15f5d6050 Mon Sep 17 00:00:00 2001
From: Damon Ding <damon.ding@rock-chips.com>
Date: Tue, 10 Mar 2026 18:15:57 +0800
Subject: [PATCH] [Test-only]arm64: dts: rockchip: Enable eDP display on RK3576
 EVB1 board

Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
---
 .../boot/dts/rockchip/rk3576-evb1-v10.dts     | 79 +++++++++++++------
 1 file changed, 57 insertions(+), 22 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts b/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
index db8fef7a4f1b..c16325266d09 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
@@ -22,8 +22,15 @@ aliases {
 		ethernet1 = &gmac1;
 	};
 
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		power-supply = <&vcc3v3_lcd_n>;
+		pwms = <&gpio_pwm0 0 25000 0>;
+	};
+
 	chosen: chosen {
 		stdout-path = "serial0:1500000n8";
+		bootargs = "root=PARTUUID=614e0000-0000 rootwait";
 	};
 
 	adc_keys: adc-keys {
@@ -61,12 +68,6 @@ button-vol-up {
 	hdmi-con {
 		compatible = "hdmi-connector";
 		type = "a";
-
-		port {
-			hdmi_con_in: endpoint {
-				remote-endpoint = <&hdmi_out_con>;
-			};
-		};
 	};
 
 	leds: leds {
@@ -78,6 +79,14 @@ work_led: led-0 {
 		};
 	};
 
+	gpio_pwm0: gpio-pwm0 {
+		compatible = "pwm-gpio";
+		gpios = <&gpio0 RK_PB5 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&gpio_pwm0_pin>;
+		pinctrl-names = "default";
+		#pwm-cells = <3>;
+	};
+
 	vbus5v0_typec: regulator-vbus5v0-typec {
 		compatible = "regulator-fixed";
 		regulator-name = "vbus5v0_typec";
@@ -264,6 +273,38 @@ &combphy1_psu {
 	status = "okay";
 };
 
+&edp {
+	force-hpd;
+	status = "okay";
+
+	aux-bus {
+		panel {
+			compatible = "edp-panel";
+			backlight = <&backlight>;
+			power-supply = <&vcc3v3_lcd_n>;
+			no-hpd;
+
+			port {
+				panel_in_edp: endpoint {
+					remote-endpoint = <&edp_out_panel>;
+				};
+			};
+		};
+	};
+};
+
+&edp_in {
+	edp_in_vp0: endpoint {
+		remote-endpoint = <&vp0_out_edp>;
+	};
+};
+
+&edp_out {
+	edp_out_panel: endpoint {
+		remote-endpoint = <&panel_in_edp>;
+	};
+};
+
 &gmac0 {
 	clock_in_out = "output";
 	phy-mode = "rgmii-rxid";
@@ -300,19 +341,7 @@ &gpu {
 };
 
 &hdmi {
-	status = "okay";
-};
-
-&hdmi_in {
-	hdmi_in_vp0: endpoint {
-		remote-endpoint = <&vp0_out_hdmi>;
-	};
-};
-
-&hdmi_out {
-	hdmi_out_con: endpoint {
-		remote-endpoint = <&hdmi_con_in>;
-	};
+	status = "disabled";
 };
 
 &hdptxphy {
@@ -774,6 +803,12 @@ &pcie1 {
 };
 
 &pinctrl {
+	gpio_pwm0 {
+		gpio_pwm0_pin: gpio-pwm0-pin {
+			rockchip,pins = <0 RK_PB5 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+	};
+
 	bluetooth {
 		bt_reg_on: bt-reg-on {
 			rockchip,pins = <1 RK_PC7 RK_FUNC_GPIO &pcfg_pull_up>;
@@ -936,8 +971,8 @@ &vop_mmu {
 };
 
 &vp0 {
-	vp0_out_hdmi: endpoint@ROCKCHIP_VOP2_EP_HDMI0 {
-		reg = <ROCKCHIP_VOP2_EP_HDMI0>;
-		remote-endpoint = <&hdmi_in_vp0>;
+	vp0_out_edp: endpoint@ROCKCHIP_VOP2_EP_EDP0 {
+		reg = <ROCKCHIP_VOP2_EP_EDP0>;
+		remote-endpoint = <&edp_in_vp0>;
 	};
 };
-- 
2.34.1