[PATCH 2/5] ARM: dts: am43x-epos-evm: Add pwm backlight support.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Sourav Poddar Date: Sat, 5 Oct 2013 05:19:46 +0530 <sourav.poddar@xxxxxx>

Add pwm backlight support for am43x epos evm.

Signed-off-by: Sourav Poddar <sourav.poddar@xxxxxx>
---
 arch/arm/boot/dts/am43x-epos-evm.dts |   24 ++++++++++++++++++++++++
 1 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
index a037a92..5521999 100644
--- a/arch/arm/boot/dts/am43x-epos-evm.dts
+++ b/arch/arm/boot/dts/am43x-epos-evm.dts
@@ -13,6 +13,7 @@
 #include "am4372.dtsi"
 #include <dt-bindings/pinctrl/am43xx.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pwm/pwm.h>
 
 / {
 	model = "TI AM43x EPOS EVM";
@@ -90,6 +91,12 @@
 				0x9c (PIN_INPUT_PULLUP | MUX_MODE3)
 			>;
 		};
+
+		ecap0_pins: backlight_pins {
+			pinctrl-single,pins = <
+				0x164 MUX_MODE0         /* eCAP0_in_PWM0_out.eCAP0_in_PWM0_out MODE0 */
+			>;
+		};
 	};
 
 	matrix_keypad: matrix_keypad@0 {
@@ -124,6 +131,13 @@
 				0x0203006c	/* DOWN */
 				0x03030069>;	/* LEFT */
 		};
+
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&ecap0 0 50000 PWM_POLARITY_INVERTED>;
+		brightness-levels = <0 51 53 56 62 75 101 152 255>;
+		default-brightness-level = <8>;
+	};
 };
 
 &mmc1 {
@@ -212,3 +226,13 @@
 		spi-rx-bus-width = <4>;
 	};
 };
+
+&epwmss0 {
+	status = "okay";
+};
+
+&ecap0 {
+		status = "okay";
+		pinctrl-names = "default";
+		pinctrl-0 = <&ecap0_pins>;
+};
-- 
1.7.1

--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux