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arm64: dts: salvator-x: Add panel backlight support 

The panel backlight is controlled through a GPIO and a PWM channel.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[simon: apply to salvator-x.dtsi instead of r8a7795-salvator-x.dts]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Laurent Pinchart 2017-04-27 16:37:41 +02:00 committed by Simon Horman
parent eaef331067
commit b33be33670
1 changed files with 22 additions and 0 deletions
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22
arch/arm64/boot/dts/renesas/salvator-x.dtsi
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@ -58,6 +58,16 @@ audio_clkout: audio_clkout {
clock-frequency = <11289600>;
};
backlight: backlight {
compatible = "pwm-backlight";
pwms = <&pwm1 0 50000>;
brightness-levels = <256 128 64 16 8 4 0>;
default-brightness-level = <6>;
enable-gpios = <&gpio6 7 GPIO_ACTIVE_HIGH>;
};
reg_1p8v: regulator0 {
compatible = "regulator-fixed";
regulator-name = "fixed-1.8V";
@ -358,6 +368,11 @@ i2c2_pins: i2c2 {
function = "i2c2";
};
pwm1_pins: pwm {
groups = "pwm1_a";
function = "pwm1";
};
scif1_pins: scif1 {
groups = "scif1_data_a", "scif1_ctrl";
function = "scif1";
@ -443,6 +458,13 @@ pwen {
};
};
&pwm1 {
pinctrl-0 = <&pwm1_pins>;
pinctrl-names = "default";
status = "okay";
};
&rcar_sound {
pinctrl-0 = <&sound_pins &sound_clk_pins>;
pinctrl-names = "default";