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ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evmsk
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>
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1 changed files with 23 additions and 0 deletions
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@ -71,6 +71,12 @@ clkout2_pin: pinmux_clkout2_pin {
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0x1b4 (PIN_OUTPUT_PULLDOWN | MUX_MODE3) /* xdma_event_intr1.clkout2 */
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>;
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};
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ecap2_pins: backlight_pins {
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pinctrl-single,pins = <
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0x19c 0x4 /* mcasp0_ahclkr.ecap2_in_pwm2_out MODE4 */
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>;
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};
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};
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ocp {
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@ -120,6 +126,16 @@ lis331dlh: lis331dlh@18 {
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st,max-limit-z = <750>;
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};
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};
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epwmss2: epwmss@48304000 {
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status = "okay";
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ecap2: ecap@48304100 {
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status = "okay";
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pinctrl-names = "default";
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pinctrl-0 = <&ecap2_pins>;
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};
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};
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};
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vbat: fixedregulator@0 {
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@ -199,6 +215,13 @@ switch@4 {
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gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
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};
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};
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backlight {
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compatible = "pwm-backlight";
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pwms = <&ecap2 0 50000 1>;
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brightness-levels = <0 58 61 66 75 90 125 170 255>;
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default-brightness-level = <8>;
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};
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};
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#include "tps65910.dtsi"
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