linux-kernel - [PATCH v3 9/9] arm64: dts: rockchip: Enable DP2HDMI for ROCK 5 ITX

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Message-ID: <20250403033748.245007-10-andyshrk@163.com>
Date: Thu,  3 Apr 2025 11:37:37 +0800
From: Andy Yan <andyshrk@....com>
To: dmitry.baryshkov@....qualcomm.com,
	heiko@...ech.de
Cc: hjc@...k-chips.com,
	mripard@...nel.org,
	naoki@...xa.com,
	stephen@...xa.com,
	cristian.ciocaltea@...labora.com,
	neil.armstrong@...aro.org,
	Laurent.pinchart@...asonboard.com,
	yubing.zhang@...k-chips.com,
	krzk+dt@...nel.org,
	devicetree@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	robh@...nel.org,
	sebastian.reichel@...labora.com,
	Andy Yan <andy.yan@...k-chips.com>
Subject: [PATCH v3 9/9] arm64: dts: rockchip: Enable DP2HDMI for ROCK 5 ITX

From: Andy Yan <andy.yan@...k-chips.com>

The HDMI0(Port next to Headphone Jack) is drived by DP1 on rk3588
via RA620(a dp2hdmi converter).

Add related dt nodes to enable it.

Note: ROCKCHIP_VOP2_EP_DP1 is defined as 11 in dt-binding header,
but it will trigger a dtc warning like "graph node unit address
error, expected "b"" if we use it directly after endpoint, so we
use "b" instead here.

Signed-off-by: Andy Yan <andy.yan@...k-chips.com>

---

Changes in v3:
- Add RA620 into bridge chain.

 .../boot/dts/rockchip/rk3588-rock-5-itx.dts   | 59 +++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
index 67b8863292487..bb61633a5b995 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
@@ -57,6 +57,29 @@ analog-sound {
 			  "Headphone", "Headphones";
 	};
 
+	bridge {
+		compatible = "radxa,ra620";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			port@0 {
+				reg = <0>;
+				hdmi_bridge_in: endpoint {
+					remote-endpoint = <&dp1_out_con>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				hdmi_bridge_out: endpoint {
+					remote-endpoint = <&hdmi_con_in>;
+				};
+			};
+		};
+	};
+
 	gpio-leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -73,6 +96,17 @@ hdd-led2 {
 		};
 	};
 
+	hdmi0-con {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_con_in: endpoint {
+				remote-endpoint = <&hdmi_bridge_out>;
+			};
+		};
+	};
+
 	hdmi1-con {
 		compatible = "hdmi-connector";
 		type = "a";
@@ -268,6 +302,24 @@ &cpu_l3 {
 	cpu-supply = <&vdd_cpu_lit_s0>;
 };
 
+&dp1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&dp1m0_pins>;
+};
+
+&dp1_in {
+	dp1_in_vp2: endpoint {
+		remote-endpoint = <&vp2_out_dp1>;
+	};
+};
+
+&dp1_out {
+	dp1_out_con: endpoint {
+		remote-endpoint = <&hdmi_bridge_in>;
+	};
+};
+
 &gpu {
 	mali-supply = <&vdd_gpu_s0>;
 	status = "okay";
@@ -1262,3 +1314,10 @@ vp1_out_hdmi1: endpoint@...KCHIP_VOP2_EP_HDMI1 {
 		remote-endpoint = <&hdmi1_in_vp1>;
 	};
 };
+
+&vp2 {
+	vp2_out_dp1: endpoint@b {
+		reg = <ROCKCHIP_VOP2_EP_DP1>;
+		remote-endpoint = <&dp1_in_vp2>;
+	};
+};
-- 
2.43.0