linux-kernel - [RFC PATCH 7/8] riscv: dts: thead: lichee-pi-4a: enable HDMI

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Message-ID: <20250814164048.2336043-8-uwu@icenowy.me>
Date: Fri, 15 Aug 2025 00:40:47 +0800
From: Icenowy Zheng <uwu@...nowy.me>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Drew Fustini <fustini@...nel.org>,
	Guo Ren <guoren@...nel.org>,
	Fu Wei <wefu@...hat.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Heiko Stuebner <heiko@...ech.de>,
	Andrzej Hajda <andrzej.hajda@...el.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Robert Foss <rfoss@...nel.org>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
	Jonas Karlman <jonas@...boo.se>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Michal Wilczynski <m.wilczynski@...sung.com>
Cc: Han Gao <rabenda.cn@...il.com>,
	Yao Zi <ziyao@...root.org>,
	dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	Icenowy Zheng <uwu@...nowy.me>
Subject: [RFC PATCH 7/8] riscv: dts: thead: lichee-pi-4a: enable HDMI

Lichee Pi 4A board features a HDMI Type-A connector connected to the
HDMI TX controller of TH1520 SoC.

Add a device tree node describing the connector, connect it to the HDMI
controller, and enable everything on this display pipeline.

Signed-off-by: Icenowy Zheng <uwu@...nowy.me>
---
 .../boot/dts/thead/th1520-lichee-pi-4a.dts    | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts b/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts
index 4020c727f09e8..3e99f905dc316 100644
--- a/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts
+++ b/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts
@@ -28,6 +28,17 @@ aliases {
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
+
+	hdmi-connector {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_con_in: endpoint {
+				remote-endpoint = <&hdmi_out_con>;
+			};
+		};
+	};
 };
 
 &padctrl0_apsys {
@@ -54,6 +65,20 @@ rx-pins {
 	};
 };
 
+&dpu {
+	status = "okay";
+};
+
+&hdmi {
+	status = "okay";
+};
+
+&hdmi_out_port {
+	hdmi_out_con: endpoint {
+		remote-endpoint = <&hdmi_con_in>;
+	};
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pins>;
-- 
2.50.1