linux-kernel - [PATCH 3/7] ARM: dts: ls1021a-tqmals1021a: Add HDMI overlay

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Message-ID: <20250327144118.504260-4-alexander.stein@ew.tq-group.com>
Date: Thu, 27 Mar 2025 15:41:09 +0100
From: Alexander Stein <alexander.stein@...tq-group.com>
To: Shawn Guo <shawnguo@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: Alexander Stein <alexander.stein@...tq-group.com>,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/7] ARM: dts: ls1021a-tqmals1021a: Add HDMI overlay

This add an overlay for using the RGB-to-HDMI bridge.
Note: As DDC is directly connected to general I2C bus, there might be I2C
address conflicts. Hence not all displays might work.

Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
---
 arch/arm/boot/dts/nxp/ls/Makefile             |  3 ++
 .../ls/ls1021a-tqmls1021a-mbls1021a-hdmi.dtso | 32 +++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 arch/arm/boot/dts/nxp/ls/ls1021a-tqmls1021a-mbls1021a-hdmi.dtso

diff --git a/arch/arm/boot/dts/nxp/ls/Makefile b/arch/arm/boot/dts/nxp/ls/Makefile
index 14759331dba24..225a7665b8ad1 100644
--- a/arch/arm/boot/dts/nxp/ls/Makefile
+++ b/arch/arm/boot/dts/nxp/ls/Makefile
@@ -6,3 +6,6 @@ dtb-$(CONFIG_SOC_LS1021A) += \
 	ls1021a-tqmls1021a-mbls1021a.dtb \
 	ls1021a-tsn.dtb \
 	ls1021a-twr.dtb
+
+ls1021a-tqmls1021a-mbls1021a-hdmi-dtbs += ls1021a-tqmls1021a-mbls1021a.dtb ls1021a-tqmls1021a-mbls1021a-hdmi.dtbo
+dtb-$(CONFIG_SOC_LS1021A) += ls1021a-tqmls1021a-mbls1021a-hdmi.dtb
diff --git a/arch/arm/boot/dts/nxp/ls/ls1021a-tqmls1021a-mbls1021a-hdmi.dtso b/arch/arm/boot/dts/nxp/ls/ls1021a-tqmls1021a-mbls1021a-hdmi.dtso
new file mode 100644
index 0000000000000..e713a2ecbfc25
--- /dev/null
+++ b/arch/arm/boot/dts/nxp/ls/ls1021a-tqmls1021a-mbls1021a-hdmi.dtso
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: (GPL-2.0-or-later OR MIT)
+/*
+ * Copyright 2013-2014 Freescale Semiconductor, Inc.
+ * Copyright 2018-2025 TQ-Systems GmbH <linux@...tq-group.com>,
+ * D-82229 Seefeld, Germany.
+ * Author: Alexander Stein
+ */
+
+/dts-v1/;
+/plugin/;
+
+&dcu {
+	status = "okay";
+
+	port {
+		dcu_out: endpoint {
+			remote-endpoint = <&sii9022a_in>;
+		};
+	};
+};
+
+&hdmi_out {
+	status = "okay";
+};
+
+&sii9022a {
+	status = "okay";
+};
+
+&sii9022a_in {
+	remote-endpoint = <&dcu_out>;
+};
-- 
2.43.0