linux-kernel - [PATCH v1 1/3] arm64: dts: colibri-imx8x: Add backlight

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Message-ID: <20251031125003.275033-2-max.oss.09@gmail.com>
Date: Fri, 31 Oct 2025 13:49:41 +0100
From: max.oss.09@...il.com
To: Max Krummenacher <max.krummenacher@...adex.com>
Cc: Philippe Schenker <philippe.schenker@...adex.com>,
	Conor Dooley <conor+dt@...nel.org>,
	Fabio Estevam <festevam@...il.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Rob Herring <robh@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/3] arm64: dts: colibri-imx8x: Add backlight

From: Philippe Schenker <philippe.schenker@...adex.com>

Add a backlight node to colibri-imx8x. The node can be enabled from
an overlay once display output is implemented.

Signed-off-by: Philippe Schenker <philippe.schenker@...adex.com>
Signed-off-by: Max Krummenacher <max.krummenacher@...adex.com>
---

 arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi b/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
index 8e9e841cc828..318fe4db1b64 100644
--- a/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
@@ -3,7 +3,21 @@
  * Copyright 2019 Toradex
  */
 
+#include "dt-bindings/pwm/pwm.h"
+
 / {
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_bl_on>;
+		brightness-levels = <0 45 63 88 119 158 203 255>;
+		default-brightness-level = <4>;
+		enable-gpios = <&lsio_gpio3 12 GPIO_ACTIVE_HIGH>; /* Colibri BL_ON */
+		power-supply = <&reg_module_3v3>;
+		pwms = <&adma_pwm 0 6666667 PWM_POLARITY_INVERTED>;
+		status = "disabled";
+	};
+
 	chosen {
 		stdout-path = &lpuart3;
 	};
-- 
2.42.0