ARM: dts: cubox-i: add support for PWM-driven front panel LED

The front panel LED on the Cubox-i is driven by one of the iMX6 PWM
channels, and is wired between the PWM output and supply.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

diff --git a/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi b/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi
index 25da82a03110f62eddc0b4b79ec637c0d4ac67d6..9202c8d18a303a509dc1485c5ff1ef35c32374e4 100644 (file)
--- a/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi
@@ -12,6 +12,19 @@
                pinctrl-0 = <&pinctrl_cubox_i_ir>;
        };
 
+       pwmleds {
+               compatible = "pwm-leds";
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_cubox_i_pwm1>;
+
+               front {
+                       active-low;
+                       label = "imx6:red:front";
+                       max-brightness = <248>;
+                       pwms = <&pwm1 0 50000>;
+               };
+       };
+
        regulators {
                compatible = "simple-bus";
 
@@ -109,6 +122,10 @@
                        >;
                };
 
+               pinctrl_cubox_i_pwm1: cubox-i-pwm1-front-led {
+                       fsl,pins = <MX6QDL_PAD_DISP0_DAT8__PWM1_OUT 0x1b0b0>;
+               };
+
                pinctrl_cubox_i_spdif: cubox-i-spdif {
                        fsl,pins = <MX6QDL_PAD_GPIO_17__SPDIF_OUT 0x13091>;
                };