arm64: dts: qcom: c630: add panel bridge 1p2 regulator

The VCC and VCCA supplies of the DSI<->eDP bridge are derived from
vreg_l2a_1p2 and controlled by a GPIO on the PMIC. Add the regulator
here so Linux can control it.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Link: https://lore.kernel.org/r/20230627-c630-uart-and-1p2-reg-v2-1-496b581935c1@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
index 21048ad4ffeb77fd54a720fce2ebdb114e231b34..fbe1874f6cec33cbec71136d04d77ef9ebd65a6a 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
+++ b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
@@ -80,6 +80,22 @@
                };
        };
 
+       sw_edp_1p2: edp-1p2-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "sw_edp_1p2";
+
+               regulator-min-microvolt = <1200000>;
+               regulator-max-microvolt = <1200000>;
+
+               pinctrl-0 = <&sw_edp_1p2_en>;
+               pinctrl-names = "default";
+
+               gpio = <&pm8998_gpios 9 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+
+               vin-supply = <&vreg_l2a_1p2>;
+       };
+
        sn65dsi86_refclk: sn65dsi86-refclk {
                compatible = "fixed-clock";
                #clock-cells = <0>;
@@ -406,6 +422,8 @@
 
                enable-gpios = <&tlmm 96 GPIO_ACTIVE_HIGH>;
 
+               vcca-supply = <&sw_edp_1p2>;
+               vcc-supply = <&sw_edp_1p2>;
                vpll-supply = <&vreg_l14a_1p88>;
                vccio-supply = <&vreg_l14a_1p88>;
 
@@ -500,6 +518,16 @@
        firmware-name = "qcom/sdm850/LENOVO/81JL/qcdsp1v2850.mbn", "qcom/sdm850/LENOVO/81JL/qcdsp2850.mbn";
 };
 
+&pm8998_gpios {
+       /* This pin is pulled down by a fixed resistor */
+       sw_edp_1p2_en: pm8998-gpio9-state {
+               pins = "gpio9";
+               function = "normal";
+               bias-disable;
+               qcom,drive-strength = <0>;
+       };
+};
+
 &qup_i2c10_default {
        drive-strength = <2>;
        bias-disable;