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ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evmsk

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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>
Signed-off-by: Benoit Cousson <benoit.cousson@linaro.org>
This commit is contained in:
Philip Avinash 2013-06-06 15:52:39 +02:00 committed by Benoit Cousson
parent 6993fd01eb
commit 1632fbdee7
1 changed files with 23 additions and 0 deletions
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23
arch/arm/boot/dts/am335x-evmsk.dts
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@ -71,6 +71,12 @@
0x1b4 (PIN_OUTPUT_PULLDOWN | MUX_MODE3) /* xdma_event_intr1.clkout2 */
>;
};
ecap2_pins: backlight_pins {
pinctrl-single,pins = <
0x19c 0x4 /* mcasp0_ahclkr.ecap2_in_pwm2_out MODE4 */
>;
};
};
ocp {
@ -120,6 +126,16 @@
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 {
@ -199,6 +215,13 @@
gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
};
};
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"