From: Bjorn Andersson <andersson@xxxxxxxxxx>
The SA8295P ADP has a MAX20411 LDO regulator on I2C 12, supplying the
VDD_GFX pads. Enable the bus and add the maxim,max20411 device on the
bus.
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sa8295p-adp.dts | 40 ++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
index fd253942e5e5..e16406c9c19d 100644
--- a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
+++ b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
@@ -266,6 +266,26 @@ &dispcc1 {
status = "okay";
};
+&i2c12 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&qup1_i2c4_state>;
+
+ status = "okay";
+
+ vdd_gfx: regulator@39 {
+ compatible = "maxim,max20411";
+ reg = <0x39>;
+
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <968750>;
+
+ enable-gpios = <&pmm8540a_gpios 2 GPIO_ACTIVE_HIGH>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&max20411_en>;
+ };
+};
+
&mdss0 {
status = "okay";
};
@@ -476,6 +496,10 @@ &pcie4_phy {
status = "okay";
};
+&qup1 {
+ status = "okay";
+};
+
&qup2 {
status = "okay";
};
@@ -728,4 +752,20 @@ wake-n-pins {
bias-pull-up;
};
};
+
+ qup1_i2c4_state: qup1-i2c4-state {
+ pins = "gpio0", "gpio1";
+ function = "qup12";
+
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+};
+
+&pmm8540a_gpios {
+ max20411_en: max20411-en-state {
+ pins = "gpio2";
+ function = "normal";
+ output-enable;
+ };
};
--
2.25.1
