Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 1632fbde authored by Philip Avinash's avatar Philip Avinash Committed by Benoit Cousson
Browse files

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: default avatarPhilip Avinash <avinashphilip@ti.com>
Reviewed-by: default avatarThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarBenoit Cousson <benoit.cousson@linaro.org>
parent 6993fd01

arch/arm/boot/dts/am335x-evmsk.dts

+23 −0
Original line number Diff line number Diff line
@@ -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"