From 29ecef8eceecec09f01e58740235009de436ea53 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Guido=20G=C3=BCnther?= Date: Sun, 9 Oct 2022 14:26:54 +0200 Subject: [PATCH] arm64: dts: librem5-devkit: Make LED use PWM MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit We can use PWM instead of just GPIO allowing us to control brightness. Signed-off-by: Guido Günther Signed-off-by: Shawn Guo --- .../dts/freescale/imx8mq-librem5-devkit.dts | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts index 6445c6b90b5bb..7e4b6d65fd894 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts @@ -61,14 +61,12 @@ }; leds { - compatible = "gpio-leds"; - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_gpio_leds>; + compatible = "pwm-leds"; led1 { label = "LED 1"; - gpios = <&gpio1 13 GPIO_ACTIVE_HIGH>; - default-state = "off"; + max-brightness = <248>; + pwms = <&pwm2 0 50000 0>; }; }; @@ -615,9 +613,9 @@ >; }; - pinctrl_gpio_leds: gpioledgrp { + pinctrl_pwm_led: pwmledgrp { fsl,pins = < - MX8MQ_IOMUXC_GPIO1_IO13_GPIO1_IO13 0x16 + MX8MQ_IOMUXC_GPIO1_IO13_PWM2_OUT 0x16 >; }; @@ -920,6 +918,12 @@ status = "okay"; }; +&pwm2 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pwm_led>; + status = "okay"; +}; + &snvs_pwrkey { status = "okay"; }; -- 2.30.2