arm64: dts: qcom: samsung-gtelwifiue: Add RT8555 backlight driver

This adds the RT8555 backlight driver to the device tree. Using i2c-gpio here is necessary, as the backlight ic is not on any i2c pins. Signed-off-by: Michael Abood <[email protected]>
msm8916-mainline · Jul 3, 2022 · 83bc280 · 83bc280
1 parent 6556f43
commit 83bc280
Showing 1 changed file with 41 additions and 0 deletions.
diff --git a/arch/arm64/boot/dts/qcom/apq8016-samsung-gtelwifiue.dts b/arch/arm64/boot/dts/qcom/apq8016-samsung-gtelwifiue.dts
@@ -27,6 +27,30 @@
  };
  };
 
+ i2c-bl {
+ status = "okay";
+ compatible = "i2c-gpio";
+ sda-gpios = <&msmgpio 24 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+ scl-gpios = <&msmgpio 25 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&bl_i2c_default>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ rt8555_backlight: backlight@31 {
+ status = "okay";
+ compatible = "richtek,rt8555-backlight";
+ gpio = <&msmgpio 69 GPIO_ACTIVE_HIGH>;
+ reg = <0x31>;
+
+ change-duty = <0>;
+ current-limit = <0xB6>;
+ driver-headroom = <1>;
+ };
+ };
+
  gpio-keys {
  compatible = "gpio-keys";
 
@@ -151,6 +175,7 @@
  compatible = "samsung,nt51017-b4p096wx5vp09";
  reg = <0>;
 
+ backlight = <&rt8555_backlight>;
  lcd-supply = <&reg_lcd>;
 
  port {
@@ -373,6 +398,22 @@
  bias-disable;
  };
 
+ bl_en_default: bl-en-default {
+ pins = "gpio69";
+ function = "gpio";
+
+ drive-strength = <2>;
+ bias-disable;
+ };
+
+ bl_i2c_default: bl-i2c-default {
+ pins = "gpio24", "gpio25";
+ function = "gpio";
+
+ drive-strength = <2>;
+ bias-disable;
+ };
+
  jack_default: jack-default {
  pins = "gpio110";
  function = "gpio";