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authorThomas Hebb <tommyhebb@gmail.com>2018-05-15 00:58:15 +0300
committerJisheng Zhang <Jisheng.Zhang@synaptics.com>2018-05-24 10:14:37 +0300
commitc8e96e070378a14817ab286a9c69a2d64546f788 (patch)
tree709bb8fd242b7bd0fa0f7c4abf42e7bfef6d5d98 /arch/arm/boot/dts/berlin2cd-google-chromecast.dts
parent9fb2856f6842ae7bd6f00a43a404d4002cdbeee3 (diff)
downloadlinux-c8e96e070378a14817ab286a9c69a2d64546f788.tar.xz
ARM: dts: chromecast: use PWM for LEDs
Control the Chromecast's two LEDs using PWM instead of GPIO pins. This allows for variable brightness. Signed-off-by: Thomas Hebb <tommyhebb@gmail.com> Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Diffstat (limited to 'arch/arm/boot/dts/berlin2cd-google-chromecast.dts')
-rw-r--r--arch/arm/boot/dts/berlin2cd-google-chromecast.dts20
1 files changed, 15 insertions, 5 deletions
diff --git a/arch/arm/boot/dts/berlin2cd-google-chromecast.dts b/arch/arm/boot/dts/berlin2cd-google-chromecast.dts
index f1767c8a6826..4b46e53a2da2 100644
--- a/arch/arm/boot/dts/berlin2cd-google-chromecast.dts
+++ b/arch/arm/boot/dts/berlin2cd-google-chromecast.dts
@@ -66,18 +66,21 @@
};
leds {
- compatible = "gpio-leds";
+ compatible = "pwm-leds";
+ pinctrl-0 = <&ledpwm_pmux>;
+ pinctrl-names = "default";
white {
label = "white";
- gpios = <&portc 1 GPIO_ACTIVE_HIGH>;
- default-state = "keep";
+ pwms = <&pwm 0 600000 0>;
+ max-brightness = <255>;
+ linux,default-trigger = "default-on";
};
red {
label = "red";
- gpios = <&portc 2 GPIO_ACTIVE_HIGH>;
- default-state = "keep";
+ pwms = <&pwm 1 600000 0>;
+ max-brightness = <255>;
};
};
};
@@ -96,3 +99,10 @@
&usb_phy1 { status = "okay"; };
&usb1 { status = "okay"; };
+
+&soc_pinctrl {
+ ledpwm_pmux: ledpwm-pmux {
+ groups = "G0";
+ function = "pwm";
+ };
+};