arm: dts: imx8mm_evk: add pwm1/backlight support

Add pwm1/backlight support nodes for imx8mm_evk board

Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>

diff --git a/arch/arm/dts/imx8mm-evk.dtsi b/arch/arm/dts/imx8mm-evk.dtsi
index 60179e0..e7a2bd8 100644 (file)
--- a/arch/arm/dts/imx8mm-evk.dtsi
+++ b/arch/arm/dts/imx8mm-evk.dtsi
@@ -41,6 +41,15 @@
                enable-active-high;
        };
 
+       backlight: backlight {
+               status = "disabled";
+               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>;
@@ -350,6 +359,12 @@
        status = "okay";
 };
 
+&pwm1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_backlight>;
+       status = "disabled";
+};
+
 &iomuxc {
        pinctrl_fec1: fec1grp {
                fsl,pins = <
@@ -491,4 +506,10 @@
                        MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B    0x166
                >;
        };
+
+       pinctrl_backlight: backlightgrp {
+               fsl,pins = <
+                       MX8MM_IOMUXC_GPIO1_IO01_PWM1_OUT        0x06
+               >;
+       };
 };