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