Hello Tomasso, On 13.04.22 18:08, 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/20220326111911.13720-9-tommaso.merciai@xxxxxxxxxxxxxxxxxxxx/ > > Signed-off-by: Tommaso Merciai <tommaso.merciai@xxxxxxxxxxxxxxxxxxxx> > --- > Changes since v1: > - Fix commit body > - Enable pwm, backlight > > Changes since v2: > - Remove status okay from pwm1,backlight (enable as default) > > arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > index 6d67df7692f1..c50d2cc3ca71 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 +403,11 @@ &wdog1 { > status = "okay"; > }; > > +&pwm1 { > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_backlight>; imx8mm.dtsi has &pwm1 { status = "disabled" }; Where is it enabled? > +}; > + > &iomuxc { > pinctrl_fec1: fec1grp { > fsl,pins = < > @@ -549,4 +562,10 @@ pinctrl_wdog: wdoggrp { > MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B 0x166 > >; > }; > + > + pinctrl_backlight: backlightgrp { > + fsl,pins = < > + MX8MM_IOMUXC_GPIO1_IO01_PWM1_OUT 0x06 > + >; > + }; > }; -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
