[PATCH] arm64: dts: qcom: x1e80100-microsoft-romulus: enable OV02C10 webcam

Oliver White
2026-04-09T08:38:25Z

Wire up the front-facing OV02C10 camera on Microsoft Romulus by enabling
CAMSS, CCI1 and CSIPHY4, adding the sensor node and its endpoint, and
describing the PM8010 regulator rails and pinctrl states required by the
camera module.

With these DT nodes in place the webcam can be probed and used through
the upstream OV02C10 driver.

Signed-off-by: Oliver White <oliverjwhite07@gmail.com>
---
.../dts/qcom/x1e80100-microsoft-romulus.dtsi | 127 ++++++++++++++++++
1 file changed, 127 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
index 14b5663a4d48..9e910813fa48 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
@@ -857,6 +857,57 @@ vreg_l3j: ldo3 {
regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
};
};
+
+ regulators-8 {
+ compatible = "qcom,pm8010-rpmh-regulators";
+ qcom,pmic-id = "m";
+
+ vdd-l1-l2-supply = <&vreg_s5j>;
+ vdd-l3-l4-supply = <&vreg_s4c>;
+ vdd-l7-supply = <&vreg_bob1>;
+
+ vreg_l1m_1p2: ldo1 {
+ regulator-name = "vreg_l1m_1p2";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1260000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l2m_1p2: ldo2 {
+ regulator-name = "vreg_l2m_1p2";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1260000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l3m_1p8: ldo3 {
+ regulator-name = "vreg_l3m_1p8";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1900000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l4m_1p8: ldo4 {
+ regulator-name = "vreg_l4m_1p8";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1900000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l5m_2p8: ldo5 {
+ regulator-name = "vreg_l5m_2p8";
+ regulator-min-microvolt = <2800000>;
+ regulator-max-microvolt = <3072000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l7m_2p8: ldo7 {
+ regulator-name = "vreg_l7m_2p8";
+ regulator-min-microvolt = <2800000>;
+ regulator-max-microvolt = <3072000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+ };
};

&gpu {
@@ -867,6 +918,66 @@ &gpu_zap_shader {
firmware-name = "qcom/x1e80100/microsoft/qcdxkmsuc8380.mbn";
};

+&camss {
+ status = "okay";
+
+ ports {
+ /*
+ * port0 => csiphy0
+ * port1 => csiphy1
+ * port2 => csiphy2
+ * port3 => csiphy4
+ */
+ port@3 {
+ camss_csiphy4_inep0: endpoint@0 {
+ clock-lanes = <7>;
+ data-lanes = <0 1>;
+ remote-endpoint = <&ov02c10_ep>;
+ };
+ };
+ };
+};
+
+&cci1 {
+ status = "okay";
+};
+
+&cci1_i2c1 {
+ camera@36 {
+ compatible = "ovti,ov02c10";
+ reg = <0x36>;
+
+ reset-gpios = <&tlmm 237 GPIO_ACTIVE_LOW>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&cam_rgb_default>;
+
+ clocks = <&camcc CAM_CC_MCLK4_CLK>;
+ assigned-clocks = <&camcc CAM_CC_MCLK4_CLK>;
+ assigned-clock-rates = <19200000>;
+
+ orientation = <0>; /* front facing */
+
+ avdd-supply = <&vreg_l5m_2p8>;
+ dvdd-supply = <&vreg_l1m_1p2>;
+ dovdd-supply = <&vreg_l3m_1p8>;
+
+ port {
+ ov02c10_ep: endpoint {
+ data-lanes = <1 2>;
+ link-frequencies = /bits/ 64 <400000000>;
+ remote-endpoint = <&camss_csiphy4_inep0>;
+ };
+ };
+ };
+};
+
+&csiphy4 {
+ vdda-0p8-supply = <&vreg_l2c>;
+ vdda-1p2-supply = <&vreg_l1c>;
+
+ status = "okay";
+};
+
&i2c0 {
clock-frequency = <100000>;

@@ -1441,6 +1552,22 @@ wcn_sw_en: wcn-sw-en-state {
bias-disable;
};

+ cam_rgb_default: cam-rgb-default-state {
+ mclk-pins {
+ pins = "gpio100";
+ function = "cam_aon";
+ drive-strength = <16>;
+ bias-disable;
+ };
+
+ reset-n-pins {
+ pins = "gpio237";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
+
cam_indicator_en: cam-indicator-en-state {
pins = "gpio225";
function = "gpio";
--
2.51.0