Uses ti,lp8556 backlight with clk-pwm.
Signed-off-by: Matti Lehtimäki <matti.lehtimaki@xxxxxxxxx>
---
.../dts/qcom-apq8026-samsung-matisse-wifi.dts | 59 +++++++++++++++++++
1 file changed, 59 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..848cfda64e5a 100644
--- a/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
+++ b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
@@ -23,6 +23,14 @@ aliases {
display0 = &framebuffer0;
};
+ backlight_pwm: pwm {
+ compatible = "clk-pwm";
+ #pwm-cells = <2>;
+ clocks = <&mmcc CAMSS_GP0_CLK>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&backlight_pwm_default_state>;
+ };
+
chosen {
#address-cells = <1>;
#size-cells = <1>;
@@ -80,6 +88,45 @@ 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-names = "default";
+ pinctrl-0 = <&backlight_i2c_default_state>;
+
+ 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>;
+ };
+ };
+ };
+
reg_tsp_1p8v: regulator-tsp-1p8v {
compatible = "regulator-fixed";
regulator-name = "tsp_1p8v";
@@ -418,6 +465,18 @@ 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
