Messages in this thread Patch in this message | | | From | Sebastian Andrzej Siewior <> | Subject | [PATCH 4/4] ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evmsk | Date | Thu, 6 Jun 2013 15:52:39 +0200 |
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From: Philip Avinash <avinashphilip@ti.com>
PWM output from ecap2 uses as backlight source. Also adds low threshold value to have a uniform divisions in brightness-levels scales with inverse polarity.
Signed-off-by: Philip Avinash <avinashphilip@ti.com> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- arch/arm/boot/dts/am335x-evmsk.dts | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts index f67c360..c21fdaf 100644 --- a/arch/arm/boot/dts/am335x-evmsk.dts +++ b/arch/arm/boot/dts/am335x-evmsk.dts @@ -51,6 +51,12 @@ 0x9c 0x27 /* gpmc_ben0_cle.gpio2_5, INPUT | MODE7 */ >; }; + + ecap2_pins: backlight_pins { + pinctrl-single,pins = < + 0x19c 0x4 /* mcasp0_ahclkr.ecap2_in_pwm2_out MODE4 */ + >; + }; }; ocp { @@ -94,6 +100,16 @@ st,max-limit-z = <750>; }; }; + + epwmss2: epwmss@48304000 { + status = "okay"; + + ecap2: ecap@48304100 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&ecap2_pins>; + }; + }; }; vbat: fixedregulator@0 { @@ -170,6 +186,13 @@ gpios = <&gpio2 5 0>; }; }; + + backlight { + compatible = "pwm-backlight"; + pwms = <&ecap2 0 50000 1>; + brightness-levels = <0 58 61 66 75 90 125 170 255>; + default-brightness-level = <8>; + }; }; /include/ "tps65910.dtsi" -- 1.7.10.4
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