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ARM: dts: cm-t335: add support for PWM backlight

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Add pinmux configuration for ECAP0 pin.
Add node for PWM backlight device.
Use PWM output from ecap0 as backlight source.

Signed-off-by: Ilya Ledvich <ilya@compulab.co.il>
Signed-off-by: Uri Mashiach <uri.mashiach@compulab.co.il>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Ilya Ledvich
2015-11-24 16:02:13 +02:00
committed by Tony Lindgren
parent 3a8038eef0
commit 07f1c49c15
1 changed files with 24 additions and 0 deletions
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24
arch/arm/boot/dts/am335x-cm-t335.dts
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@@ -39,6 +39,13 @@ vmmc_fixed: fixedregulator@0 {
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
backlight {
compatible = "pwm-backlight";
pwms = <&ecap0 0 50000 0>;
brightness-levels = <0 51 53 56 62 75 101 152 255>;
default-brightness-level = <8>;
};
};
&am33xx_pinmux {
@@ -114,6 +121,13 @@ AM33XX_IOPAD(0x974, PIN_OUTPUT_PULLDOWN | MUX_MODE0)
>;
};
ecap0_pins: pinmux_ecap0_pins {
pinctrl-single,pins = <
/* eCAP0_in_PWM0_out.eCAP0_in_PWM0_out MODE0 */
AM33XX_IOPAD(0x964, 0x0)
>;
};
cpsw_default: cpsw_default {
pinctrl-single,pins = <
/* Slave 1 */
@@ -223,6 +237,16 @@ ext_rtc: em3027@56 {
};
};
&epwmss0 {
status = "okay";
ecap0: ecap@48300100 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&ecap0_pins>;
};
};
&gpmc {
status = "okay";
pinctrl-names = "default";