linux-kernel - [PATCH v4 4/8] arm64: dts: imx8mp-hummingboard-pulse: fix mini-hdmi dsi port reference

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Message-Id: <20251201-imx8mp-hb-iiot-v4-4-53a4cd6c21bf@solid-run.com>
Date: Mon, 01 Dec 2025 14:07:23 +0100
From: Josua Mayer <josua@...id-run.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
 Dmitry Torokhov <dmitry.torokhov@...il.com>,
 Sascha Hauer <s.hauer@...gutronix.de>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>
Cc: Jon Nettleton <jon@...id-run.com>,
 Mikhail Anikin <mikhail.anikin@...id-run.com>,
 Yazan Shhady <yazan.shhady@...id-run.com>, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
 Josua Mayer <josua@...id-run.com>
Subject: [PATCH v4 4/8] arm64: dts: imx8mp-hummingboard-pulse: fix
 mini-hdmi dsi port reference

imx8mp.dtsi includes a default port@1 node with an empty placeholder
endpoint intended for linking to a dsi bridge or panel.
HummingBoard Pulse mini-hdmi dtsi added and linked hdmi brodge to yet
another endpoint.

This duplicate endpoint can cause dsi_attach to fail.

Remove the duplicate node and link to the one defined in soc dtsi.
Further remove the unnecessary attach-bridge property.

Fixes: 2a222aa2bee9 ("arm64: dts: add description for solidrun imx8mp hummingboard variants")
Signed-off-by Josua Mayer <josua@...id-run.com>
---
 .../dts/freescale/imx8mp-hummingboard-pulse-mini-hdmi.dtsi    | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-pulse-mini-hdmi.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-pulse-mini-hdmi.dtsi
index 46916ddc05335..0e5f4607c7c1b 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-pulse-mini-hdmi.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-pulse-mini-hdmi.dtsi
@@ -41,7 +41,7 @@ port@0 {
 				reg = <0>;
 
 				adv7535_from_dsim: endpoint {
-					remote-endpoint = <&dsim_to_adv7535>;
+					remote-endpoint = <&mipi_dsi_out>;
 				};
 			};
 
@@ -71,11 +71,8 @@ &lcdif1 {
 &mipi_dsi {
 	samsung,esc-clock-frequency = <10000000>;
 	status = "okay";
+};
 
-	port@1 {
-		dsim_to_adv7535: endpoint {
-			remote-endpoint = <&adv7535_from_dsim>;
-			attach-bridge;
-		};
-	};
+&mipi_dsi_out {
+	remote-endpoint = <&adv7535_from_dsim>;
 };

-- 
2.51.0