From: Rostislav Lisovy <lisovy@gmail.com>
Date: Tue, 27 Aug 2013 16:09:16 +0000 (+0200)
Subject: imx53 voipac: Enable PWM backlight control
X-Git-Url: http://rtime.felk.cvut.cz/gitweb/linux-imx.git/commitdiff_plain/3f52c2334e01c06f1b3eb5d52aa0cf943e4905fd

imx53 voipac: Enable PWM backlight control
---

diff --git a/_build/.config b/_build/.config
index 02e1b2db9af3..9a4165e5d37f 100644
--- a/_build/.config
+++ b/_build/.config
@@ -1274,6 +1274,7 @@ CONFIG_INPUT_MMA8450=y
 # CONFIG_INPUT_CM109 is not set
 # CONFIG_INPUT_UINPUT is not set
 # CONFIG_INPUT_PCF8574 is not set
+# CONFIG_INPUT_PWM_BEEPER is not set
 # CONFIG_INPUT_GPIO_ROTARY_ENCODER is not set
 # CONFIG_INPUT_DA9052_ONKEY is not set
 # CONFIG_INPUT_ADXL34X is not set
@@ -1838,6 +1839,7 @@ CONFIG_LCD_PLATFORM=y
 # CONFIG_LCD_HX8357 is not set
 CONFIG_BACKLIGHT_CLASS_DEVICE=y
 CONFIG_BACKLIGHT_GENERIC=y
+CONFIG_BACKLIGHT_PWM=y
 # CONFIG_BACKLIGHT_DA9052 is not set
 # CONFIG_BACKLIGHT_ADP8860 is not set
 # CONFIG_BACKLIGHT_ADP8870 is not set
@@ -2172,6 +2174,7 @@ CONFIG_LEDS_CLASS=y
 # CONFIG_LEDS_PCA9633 is not set
 # CONFIG_LEDS_DA9052 is not set
 # CONFIG_LEDS_DAC124S085 is not set
+# CONFIG_LEDS_PWM is not set
 # CONFIG_LEDS_REGULATOR is not set
 # CONFIG_LEDS_BD2802 is not set
 # CONFIG_LEDS_LT3593 is not set
@@ -2375,7 +2378,10 @@ CONFIG_CLKSRC_MMIO=y
 # CONFIG_EXTCON is not set
 # CONFIG_MEMORY is not set
 # CONFIG_IIO is not set
-# CONFIG_PWM is not set
+CONFIG_PWM=y
+CONFIG_PWM_SYSFS=y
+CONFIG_PWM_IMX=y
+# CONFIG_PWM_PCA9685 is not set
 CONFIG_IRQCHIP=y
 CONFIG_ARM_GIC=y
 # CONFIG_IPACK_BUS is not set
diff --git a/arch/arm/boot/dts/imx53-voipac.dts b/arch/arm/boot/dts/imx53-voipac.dts
index b7de088c5809..2751325b7430 100644
--- a/arch/arm/boot/dts/imx53-voipac.dts
+++ b/arch/arm/boot/dts/imx53-voipac.dts
@@ -53,6 +53,13 @@
 
 	};
 
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm2 0 5000000>;	/* Period in nanoseconds */
+		brightness-levels = <0 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92 96 100>;
+		default-brightness-level = <10>;
+	};
+
 	display@di0 {
 		compatible = "fsl,imx-parallel-display";
 		pinctrl-names = "default";
@@ -384,6 +391,13 @@
 	status = "okay";
 };
 
+&pwm2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pwm2_1>;
+	status = "okay";
+};
+
+
 
 /*
 &usbotg {