linux-kernel - [PATCH] arm64: dts: mediatek: mt8395-genio-1200-evk: Disable unused backlight

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Message-Id: <20250502-genio-1200-disable-backlight-lcd1-v1-1-c021d2c9e48e@collabora.com>
Date: Fri, 02 May 2025 08:42:56 -0400
From: Nícolas F. R. A. Prado <nfraprado@...labora.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: kernel@...labora.com, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, 
 Nícolas F. R. A. Prado <nfraprado@...labora.com>
Subject: [PATCH] arm64: dts: mediatek: mt8395-genio-1200-evk: Disable
 unused backlight

The builtin panel on the Genio 1200 EVK board uses the backlight_lcm0
node for its backlight. Though the backlight_lcd1 is currently left
enabled, it is unused, and its pwm input, disp_pwm1, is disabled, so it
fails probe. Disable this unused node.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
---
 arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts b/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
index dc884e2e95c70309407798e6a51b595e441e6369..be5e5f339e811728e91b1ffec45ada25f9b0208b 100644
--- a/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
@@ -106,6 +106,7 @@ backlight_lcd1: backlight-lcd1 {
 		brightness-levels = <0 1023>;
 		num-interpolated-steps = <1023>;
 		default-brightness-level = <576>;
+		status = "disabled";
 	};

 	can_clk: can-clk {

---
base-commit: 37ff6e9a2ce321b7932d3987701757fb4d87b0e6
change-id: 20250502-genio-1200-disable-backlight-lcd1-b10ef0424a51

Best regards,
-- 
Nícolas F. R. A. Prado <nfraprado@...labora.com>