Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 4a23e6ee authored by Leonard Crestez's avatar Leonard Crestez Committed by Shawn Guo
Browse files

ARM: dts: imx7d-sdb: Restore pwm backlight support 



This was removed in commit 5eaeaccd ("ARM: dts: imx7d-sdb: Pass
'enable-gpios' and 'power-supply' properties") with a note claiming that
GPIO1_IO01 is connected to a pin labeled as "PWREN" on the connector.

Despite that label this pin does actually work as a PWM controlling
brightness. So restore pwm functionality.

Signed-off-by: default avatarLeonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: default avatarFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent eecd78bc

arch/arm/boot/dts/imx7d-sdb.dts

+17 −4
Original line number Diff line number Diff line
@@ -108,10 +108,17 @@ 
		gpio = <&gpio2 14 GPIO_ACTIVE_LOW>;

	};



	backlight: backlight {

		compatible = "pwm-backlight";

		pwms = <&pwm1 0 5000000 0>;

		brightness-levels = <0 4 8 16 32 64 128 255>;

		default-brightness-level = <6>;

		status = "okay";

	};



	panel {

		compatible = "innolux,at043tn24";

		pinctrl-0 = <&pinctrl_backlight>;

		enable-gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>;

		backlight = <&backlight>;

		power-supply = <&reg_lcd_3v3>;



		port {
@@ -704,6 +711,12 @@ 
	};

};



&pwm1 {

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_pwm1>;

	status = "okay";

};



&iomuxc_lpsr {

	pinctrl_wdog: wdoggrp {

		fsl,pins = <
@@ -711,9 +724,9 @@ 
		>;

	};



	pinctrl_backlight: backlightgrp {

	pinctrl_pwm1: pwm1grp {

		fsl,pins = <

			MX7D_PAD_LPSR_GPIO1_IO01__GPIO1_IO1		0x110b0

			MX7D_PAD_LPSR_GPIO1_IO01__PWM1_OUT		0x30

		>;

	};

};