| Message ID | 20220413125636.28650-1-tommaso.merciai@amarulasolutions.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] arm64: dts: imx8mm-evk: add pwm1/backlight support | expand |
On 13/04/2022 14:56, Tommaso Merciai wrote: > Add pwm1/backlight support nodes for imx8mm_evk board. > Align with u-boot dts > Thank you for your patch. There is something to discuss/improve. > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > index 6d67df7692f1..4c18f8fcd377 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > @@ -59,6 +59,15 @@ reg_usdhc2_vmmc: regulator-usdhc2 { > enable-active-high; > }; > > + backlight: backlight { > + status = "okay"; All nodes have status=okay by default, so no need for this. > + 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 +404,12 @@ &wdog1 { > status = "okay"; > }; > > +&pwm1 { > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_backlight>; > + status = "okay"; This is needed if the node was disabled in DTSI (I did not check it). Best regards, Krzysztof
On Wed, Apr 13, 2022 at 03:45:44PM +0200, Krzysztof Kozlowski wrote: > On 13/04/2022 14:56, Tommaso Merciai wrote: > > Add pwm1/backlight support nodes for imx8mm_evk board. > > Align with u-boot dts > > > > Thank you for your patch. There is something to discuss/improve. > > > > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > > index 6d67df7692f1..4c18f8fcd377 100644 > > --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > > +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi > > @@ -59,6 +59,15 @@ reg_usdhc2_vmmc: regulator-usdhc2 { > > enable-active-high; > > }; > > > > + backlight: backlight { > > + status = "okay"; > > All nodes have status=okay by default, so no need for this. > > > + 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 +404,12 @@ &wdog1 { > > status = "okay"; > > }; > > > > +&pwm1 { > > + pinctrl-names = "default"; > > + pinctrl-0 = <&pinctrl_backlight>; > > + status = "okay"; > > This is needed if the node was disabled in DTSI (I did not check it). > > > Best regards, > Krzysztof Hi Krzysztof, Thanks for review, I'll update in v3. Regards, Tommaso
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi index 6d67df7692f1..4c18f8fcd377 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi @@ -59,6 +59,15 @@ reg_usdhc2_vmmc: regulator-usdhc2 { enable-active-high; }; + backlight: backlight { + status = "okay"; + 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 +404,12 @@ &wdog1 { status = "okay"; }; +&pwm1 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_backlight>; + status = "okay"; +}; + &iomuxc { pinctrl_fec1: fec1grp { fsl,pins = < @@ -549,4 +564,10 @@ pinctrl_wdog: wdoggrp { MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B 0x166 >; }; + + pinctrl_backlight: backlightgrp { + fsl,pins = < + MX8MM_IOMUXC_GPIO1_IO01_PWM1_OUT 0x06 + >; + }; };
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@amarulasolutions.com/ Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com> --- Changes since v1: - Fix commit body - Enable pwm, backlight arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+)