Commit 5fec7cb2 authored by Matti Lehtimäki's avatar Matti Lehtimäki Committed by Bjorn Andersson
Browse files

ARM: dts: qcom: apq8026-samsung-matisse-wifi: Add display backlight 



Uses ti,lp8556 backlight with clk-pwm.

Signed-off-by: default avatarMatti Lehtimäki <matti.lehtimaki@gmail.com>
Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230111183502.706151-1-matti.lehtimaki@gmail.com
parent dc031a54

arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts

+61 −0
Original line number Diff line number Diff line
@@ -80,6 +80,55 @@ key-volume-up { 
		};

	};



	i2c-backlight {

		compatible = "i2c-gpio";

		sda-gpios = <&tlmm 20 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;

		scl-gpios = <&tlmm 21 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;



		pinctrl-0 = <&backlight_i2c_default_state>;

		pinctrl-names = "default";



		i2c-gpio,delay-us = <4>;



		#address-cells = <1>;

		#size-cells = <0>;



		backlight@2c {

			compatible = "ti,lp8556";

			reg = <0x2c>;



			dev-ctrl = /bits/ 8 <0x80>;

			init-brt = /bits/ 8 <0x3f>;

			pwm-period = <100000>;



			pwms = <&backlight_pwm 0 100000>;

			pwm-names = "lp8556";



			rom-a0h {

				rom-addr = /bits/ 8 <0xa0>;

				rom-val = /bits/ 8 <0x44>;

			};



			rom-a1h {

				rom-addr = /bits/ 8 <0xa1>;

				rom-val = /bits/ 8 <0x6c>;

			};



			rom-a5h {

				rom-addr = /bits/ 8 <0xa5>;

				rom-val = /bits/ 8 <0x24>;

			};

		};

	};



	backlight_pwm: pwm {

		compatible = "clk-pwm";

		#pwm-cells = <2>;

		clocks = <&mmcc CAMSS_GP0_CLK>;

		pinctrl-0 = <&backlight_pwm_default_state>;

		pinctrl-names = "default";

	};



	reg_tsp_1p8v: regulator-tsp-1p8v {

		compatible = "regulator-fixed";

		regulator-name = "tsp_1p8v";
@@ -418,6 +467,18 @@ accel_int_default_state: accel-int-default-state { 
		bias-disable;

	};



	backlight_i2c_default_state: backlight-i2c-default-state {

		pins = "gpio20", "gpio21";

		function = "gpio";

		drive-strength = <2>;

		bias-disable;

	};



	backlight_pwm_default_state: backlight-pwm-default-state {

		pins = "gpio33";

		function = "gp0_clk";

	};



	muic_int_default_state: muic-int-default-state {

		pins = "gpio67";

		function = "gpio";