[PATCH 5/9] arm64: dts: qcom: x1-asus-zenbook-a14: add HM1092 IR camera and wire cameras to camss

[Ramshouriesh]

Add the Himax HM1092 mono NIR (Windows-Hello IR) sensor on CSIPHY0,
together with its PM8550 IR illuminator and the pm8010 l4m/l7m camera
rails, and connect both sensors to the CAMSS input ports defined in
hamoa.dtsi.

On Purwa CAMSS exposes two CSIPHYs (0 and 4) and the camss input port
number selects the CSIPHY by index, so the board wiring is:

  camss port@0 -> HM1092  (IR,  1 data lane,  CSIPHY0)
  camss port@1 -> OV02C10 (RGB, 2 data lanes, CSIPHY4)

Each CSIPHY node carries its sensor's D-PHY lane routing in its own
port@0 endpoint, per the qcom,x1e80100-csi2-phy binding: the PHY driver
parses data-lanes from that endpoint at probe time, and its
remote-endpoint must reference an available device for
fwnode_graph_get_endpoint_by_id() to return it, hence each csiphy
port@0 points at its sensor. The CAMSS-to-CSIPHY association itself
comes from the phys/phy-names properties inherited from hamoa.dtsi.

The IR illuminator is a PM8550 flash LED (channel 4) referenced through
the generic "leds" consumer property from video-interface-devices.yaml.
The HM1092 driver strobes it while streaming (700 mA, re-fired within
the 1.28 s hardware safety timeout) so the scene stays lit for IR
face-unlock capture.

Signed-off-by: Ramshouriesh <rshouriesh@xxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/x1-asus-zenbook-a14.dtsi | 140 ++++++++++++++++++++--
 1 file changed, 129 insertions(+), 11 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/x1-asus-zenbook-a14.dtsi b/arch/arm64/boot/dts/qcom/x1-asus-zenbook-a14.dtsi
index 388737eaa624..ab8f231cad8d 100644
--- a/arch/arm64/boot/dts/qcom/x1-asus-zenbook-a14.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1-asus-zenbook-a14.dtsi
@@ -8,7 +8,6 @@
 #include <dt-bindings/input/gpio-keys.h>
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/leds/common.h>
-#include <dt-bindings/phy/phy.h>
 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 
@@ -815,6 +814,20 @@ vreg_l3m_1p8: ldo3 {
 			regulator-max-microvolt = <1800000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 		};
+
+		vreg_l4m_1p8: ldo4 {
+			regulator-name = "vreg_l4m_1p8";
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l7m_2p9: ldo7 {
+			regulator-name = "vreg_l7m_2p9";
+			regulator-min-microvolt = <2912000>;
+			regulator-max-microvolt = <2912000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
 	};
 };
 
@@ -824,14 +837,19 @@ &camss {
 	ports {
 		/*
 		 * port0 => csiphy0
-		 * port1 => csiphy1
-		 * port2 => csiphy2
-		 * port3 => csiphy4
+		 * port1 => csiphy4
 		 */
-		port@3 {
-			csiphy4_ep: endpoint@4 {
-				reg = <4>;
-				clock-lanes = <7>;
+		port@0 {
+			camss_csiphy0_inep: endpoint@0 {
+				reg = <0>;
+				data-lanes = <0>;
+				remote-endpoint = <&hm1092_ep>;
+			};
+		};
+
+		port@1 {
+			camss_csiphy4_inep: endpoint@0 {
+				reg = <0>;
 				data-lanes = <0 1>;
 				remote-endpoint = <&ov02c10_ep>;
 			};
@@ -869,18 +887,102 @@ port {
 			ov02c10_ep: endpoint {
 				data-lanes = <1 2>;
 				link-frequencies = /bits/ 64 <400000000>;
-				remote-endpoint = <&csiphy4_ep>;
+				remote-endpoint = <&camss_csiphy4_inep>;
 			};
 		};
 	};
 };
 
 &csiphy4 {
-	vdda-0p8-supply = <&vreg_l2c_0p8>;
+	vdda-0p9-supply = <&vreg_l2c_0p8>;
+	vdda-1p2-supply = <&vreg_l1c_1p2>;
+
+	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		/* Sensor input: D-PHY lane routing for the OV02C10 */
+		port@0 {
+			reg = <0>;
+			endpoint {
+				data-lanes = <0 1>;
+				remote-endpoint = <&ov02c10_ep>;
+			};
+		};
+	};
+};
+
+&cci0 {
+	status = "okay";
+};
+
+&cci0_i2c0 {
+	/* Himax HM1092 mono NIR sensor (Windows-Hello IR camera) on CSIPHY0 */
+	camera@24 {
+		compatible = "himax,hm1092";
+		reg = <0x24>;
+
+		reset-gpios = <&tlmm 109 GPIO_ACTIVE_LOW>;
+		pinctrl-0 = <&cam_ir_default>;
+		pinctrl-names = "default";
+
+		clocks = <&camcc CAM_CC_MCLK0_CLK>;
+		assigned-clocks = <&camcc CAM_CC_MCLK0_CLK>;
+		assigned-clock-rates = <24000000>;
+
+		orientation = <0>;
+
+		/* PM8550 IR illuminator, pulsed by the driver while streaming */
+		leds = <&ir_flash>;
+
+		avdd-supply = <&vreg_l7m_2p9>;
+		dvdd-supply = <&vreg_l7m_2p9>;
+		dovdd-supply = <&vreg_l4m_1p8>;
+
+		port {
+			hm1092_ep: endpoint {
+				data-lanes = <1>;
+				link-frequencies = /bits/ 64 <400000000>;
+				remote-endpoint = <&camss_csiphy0_inep>;
+			};
+		};
+	};
+};
+
+&csiphy0 {
+	vdda-0p9-supply = <&vreg_l2c_0p8>;
 	vdda-1p2-supply = <&vreg_l1c_1p2>;
-	phy-type = <PHY_TYPE_DPHY>;
 
 	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		/* Sensor input: D-PHY lane routing for the HM1092 */
+		port@0 {
+			reg = <0>;
+			endpoint {
+				data-lanes = <0>;
+				remote-endpoint = <&hm1092_ep>;
+			};
+		};
+	};
+};
+
+&pm8550_flash {
+	status = "okay";
+
+	ir_flash: led-0 {
+		function = LED_FUNCTION_FLASH;
+		color = <LED_COLOR_ID_IR>;
+		led-sources = <4>;
+		led-max-microamp = <180000>;
+		flash-max-microamp = <700000>;
+		flash-max-timeout-us = <1280000>;
+	};
 };
 
 &i2c0 {
@@ -1384,6 +1486,22 @@ reset-n-pins {
 		};
 	};
 
+	cam_ir_default: cam-ir-default-state {
+		mclk-pins {
+			pins = "gpio96";
+			function = "cam_mclk";
+			drive-strength = <16>;
+			bias-disable;
+		};
+
+		reset-n-pins {
+			pins = "gpio109";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-disable;
+		};
+	};
+
 	edp_reg_en: edp-reg-en-state {
 		pins = "gpio70";
 		function = "gpio";

-- 
2.53.0