Uses ti,lp8556 backlight with clk-pwm. Signed-off-by: Matti Lehtimäki <matti.lehtimaki@xxxxxxxxx> --- This patch was part of the series https://lore.kernel.org/linux-arm-msm/20230106114403.275865-1-matti.lehtimaki@xxxxxxxxx/ which already had the other patches applied. Changes in v2: - Add empty line between subnodes - Move pwm node to correct place - Reorder pinctrl properties --- .../dts/qcom-apq8026-samsung-matisse-wifi.dts | 61 +++++++++++++++++++ 1 file changed, 61 insertions(+) diff --git a/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts index 15b9590ba07b..91b860e24681 100644 --- a/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts +++ b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts @@ -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"; -- 2.34.1
