Add pwm1/backlight support nodes for imx8mm_evk board.
Align with u-boot dts
References:
- https://patchwork.ozlabs.org/project/uboot/patch/[email protected]/
Signed-off-by: Tommaso Merciai <[email protected]>
---
Changes since v1:
- Fix commit body
- Enable pwm, backlight
Changes since v2:
- Remove status okay from pwm1,backlight (enable as default)
Changes since v3:
- Remove status okay only from backlight (enable as default), pwm1 is disabled
on imx8mm.dtsi, we need to enable it
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 6d67df7692f1..6a209395452a 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
@@ -59,6 +59,14 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
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 @@ &wdog1 {
status = "okay";
};
+&pwm1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_backlight>;
+ status = "okay";
+};
+
&iomuxc {
pinctrl_fec1: fec1grp {
fsl,pins = <
@@ -549,4 +563,10 @@ pinctrl_wdog: wdoggrp {
MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B 0x166
>;
};
+
+ pinctrl_backlight: backlightgrp {
+ fsl,pins = <
+ MX8MM_IOMUXC_GPIO1_IO01_PWM1_OUT 0x06
+ >;
+ };
};
--
2.25.1
On Wed, Apr 13, 2022 at 11:33:11PM +0200, Tommaso Merciai wrote:
> Add pwm1/backlight support nodes for imx8mm_evk board.
> Align with u-boot dts
>
> References:
> - https://patchwork.ozlabs.org/project/uboot/patch/[email protected]/
>
> Signed-off-by: Tommaso Merciai <[email protected]>
Applied, thanks!