From b5f955c099cd9bccbf44681e8ee14c3d786ea25a Mon Sep 17 00:00:00 2001 From: Tommaso Merciai Date: Wed, 13 Apr 2022 23:33:11 +0200 Subject: [PATCH] arm64: dts: imx8mm-evk: add pwm1/backlight support Add pwm1/backlight support nodes for imx8mm_evk board. Align with u-boot dts References: - https://patchwork.ozlabs.org/project/uboot/patch/20220326111911.13720-9-tommaso.merciai@amarulasolutions.com/ Signed-off-by: Tommaso Merciai Signed-off-by: Shawn Guo --- arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi index 6d67df7692f1f4..6a209395452a76 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi @@ -59,6 +59,14 @@ enable-active-high; }; + backlight: backlight { + compatible = "pwm-backlight"; + pwms = <&pwm1 0 5000000>; + brightness-levels = <0 255>; + num-interpolated-steps = <255>; + default-brightness-level = <250>; + }; + ir-receiver { compatible = "gpio-ir-receiver"; gpios = <&gpio1 13 GPIO_ACTIVE_LOW>; @@ -395,6 +403,12 @@ status = "okay"; }; +&pwm1 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_backlight>; + status = "okay"; +}; + &iomuxc { pinctrl_fec1: fec1grp { fsl,pins = < @@ -549,4 +563,10 @@ MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B 0x166 >; }; + + pinctrl_backlight: backlightgrp { + fsl,pins = < + MX8MM_IOMUXC_GPIO1_IO01_PWM1_OUT 0x06 + >; + }; };