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arm64: dts: allwinner: add backlight regulator for Pinebook

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Backlight power is controlled by PH6 GPIO, so add corresponding
regulator-fixed node for it. Otherwise backlight won't light up
if bootloader doesn't enable it.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
This commit is contained in:
Vasily Khoruzhick 2018-10-08 20:46:09 -07:00 committed by Maxime Ripard
parent 651022382c
commit 2dae149d92
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1 changed files with 10 additions and 0 deletions
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arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
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@ -22,12 +22,22 @@ aliases {
ethernet0 = &rtl8723cs;
};
vdd_bl: regulator@0 {
compatible = "regulator-fixed";
regulator-name = "bl-3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
enable-active-high;
};
backlight: backlight {
compatible = "pwm-backlight";
pwms = <&pwm 0 50000 0>;
brightness-levels = <0 5 10 15 20 30 40 55 70 85 100>;
default-brightness-level = <2>;
enable-gpios = <&pio 3 23 GPIO_ACTIVE_HIGH>; /* PD23 */
power-supply = <&vdd_bl>;
};
chosen {