From: Ilya Ledvich <ilya@xxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxx>
Signed-off-by: Uri Mashiach <uri.mashiach@xxxxxxxxxxxxxx>
Acked-by: Igor Grinberg <grinberg@xxxxxxxxxxxxxx>
---
v1 -> v2: integrate AM33XX_IOPAD macro in pinmux definitions
arch/arm/boot/dts/am335x-cm-t335.dts | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/arch/arm/boot/dts/am335x-cm-t335.dts b/arch/arm/boot/dts/am335x-cm-t335.dts
index 9be0bfe..4939d82 100644
--- a/arch/arm/boot/dts/am335x-cm-t335.dts
+++ b/arch/arm/boot/dts/am335x-cm-t335.dts
@@ -39,6 +39,13 @@
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 @@
>;
};
+ 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 @@
};
};
+&epwmss0 {
+ status = "okay";
+
+ ecap0: ecap@48300100 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&ecap0_pins>;
+ };
+};
+
&gpmc {
status = "okay";
pinctrl-names = "default";
--
2.5.0
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