From 61ba02ca4758e7978dc8caf5e1fff3a9f5921a60 Mon Sep 17 00:00:00 2001 From: Ronald Claveau Date: Wed, 13 May 2026 12:43:55 +0200 Subject: [PATCH] arm64: dts: amlogic: t7: khadas-vim4: add PWM-driven status LED The VIM4 board exposes a status LED wired to the PWM_AO_C_D output. Enable the pwm_ao_cd controller with its pinmux, and declare a pwm-leds node with a heartbeat trigger. Signed-off-by: Ronald Claveau Link: https://patch.msgid.link/20260513-add-kvim4-sysled-v2-3-3ec9779e8875@aliel.fr Signed-off-by: Neil Armstrong --- .../amlogic/amlogic-t7-a311d2-khadas-vim4.dts | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts index fd1b983354a01..c41525a34b721 100644 --- a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts @@ -53,6 +53,16 @@ regulator-always-on; }; + pwm-leds { + compatible = "pwm-leds"; + + status { + linux,default-trigger="heartbeat"; + max-brightness = <255>; + pwms = <&pwm_ao_cd 0 30040 0>; + }; + }; + sd_3v3: regulator-sdcard-3v3 { compatible = "regulator-fixed"; regulator-name = "SD_3V3"; @@ -163,6 +173,12 @@ pinctrl-names = "default"; }; +&pwm_ao_cd { + status = "okay"; + pinctrl-0 = <&pwm_ao_c_d_pins>; + pinctrl-names = "default"; +}; + /* SDIO */ &sd_emmc_a { status = "okay"; -- 2.47.3