From 6993fd01ebf2985e0c67088b47559bc513f2840b Mon Sep 17 00:00:00 2001 From: Philip Avinash Date: Thu, 6 Jun 2013 15:52:38 +0200 Subject: [PATCH] ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evm PWM output from ecap0 uses as backlight source. Also adds low threshold value to have a uniform divisions in brightness-levels scales. Signed-off-by: Philip Avinash Reviewed-by: Thierry Reding Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Benoit Cousson --- arch/arm/boot/dts/am335x-evm.dts | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts index 2c5324703c7b..a150d0441b5e 100644 --- a/arch/arm/boot/dts/am335x-evm.dts +++ b/arch/arm/boot/dts/am335x-evm.dts @@ -91,6 +91,12 @@ 0x9c (PIN_OUTPUT | MUX_MODE0) /* gpmc_be0n_cle.gpmc_be0n_cle */ >; }; + + ecap0_pins: backlight_pins { + pinctrl-single,pins = < + 0x164 0x0 /* eCAP0_in_PWM0_out.eCAP0_in_PWM0_out MODE0 */ + >; + }; }; ocp { @@ -163,6 +169,16 @@ status = "okay"; }; + epwmss0: epwmss@48300000 { + status = "okay"; + + ecap0: ecap@48300100 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&ecap0_pins>; + }; + }; + gpmc: gpmc@50000000 { status = "okay"; pinctrl-names = "default"; @@ -299,6 +315,13 @@ gpio-key,wakeup; }; }; + + backlight { + compatible = "pwm-backlight"; + pwms = <&ecap0 0 50000 0>; + brightness-levels = <0 51 53 56 62 75 101 152 255>; + default-brightness-level = <8>; + }; }; #include "tps65910.dtsi" -- 2.34.1