[v3 5/6] arm64: dts: sdm845-db845c: Add ov8856 & ov7251 camera nodes

[Robert Foss]

Enable the ov8856 main camera and the ov7251 b/w tracking camera
used on the Qualcomm RB3 kit.

Currently the camera nodes have not yet been attached to an to a
CSI2 endpoint, since no driver currently supports the ISP that the the
SDM845/db845c ships with.

Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---

Changes since v1:
 - Move cam0_ pinctrls subnodes into the first pm8998_gpio reference
 - Remove accidentally committed &tlmn node subnodes
 - Remove redundant tlmm pinctrl subnodes
 - Fix pinctrl subnode identation
 - Remove accidentally committed &tlmn node subnodes
 - Replace underscores in node names
 - Reference cci i2c buses by labe
 - Change camera node names from camX@YY to camera@YY
 - Remove camera@10 comment about I2C addresses
 - Replace GPIO_ACTIVE_HIGH with 0 in camera nodes
 - Removed extra newline
 - Remove comment about not being available always
 - Disable cameras as CSI driver is missing
 - Fix factual error in comment about vreg_s4a_1p8
 - Remove dummy regulator cam3_vddd_1v2

 arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 178 +++++++++++++++++++++
 1 file changed, 178 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
index efb0086e2aa1..ed71278196f2 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
@@ -110,6 +110,40 @@ pcie0_1p05v: pcie-0-1p05v-regulator {
 		// enable-active-high;
 	};
 
+	cam0_dvdd_1v2: reg_cam0_dvdd_1v2 {
+		compatible = "regulator-fixed";
+		regulator-name = "CAM0_DVDD_1V2";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		enable-active-high;
+		gpio = <&pm8998_gpio 12 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&cam0_dvdd_1v2_en_default>;
+		vin-supply = <&vbat>;
+	};
+
+	cam0_avdd_2v8: reg_cam0_avdd_2v8 {
+		compatible = "regulator-fixed";
+		regulator-name = "CAM0_AVDD_2V8";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+		enable-active-high;
+		gpio = <&pm8998_gpio 10 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&cam0_avdd_2v8_en_default>;
+		vin-supply = <&vbat>;
+	};
+
+	/* This regulator is enabled when the VREG_LVS1A_1P8 trace is enabled */
+	cam3_avdd_2v8: reg_cam3_avdd_2v8 {
+		compatible = "regulator-fixed";
+		regulator-name = "CAM3_AVDD_2V8";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+		regulator-always-on;
+		vin-supply = <&vbat>;
+	};
+
 	pcie0_3p3v_dual: vldo-3v3-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "VLDO_3V3";
@@ -393,6 +427,24 @@ &pm8998_gpio {
 		"OPTION2",
 		"PM845_SLB";
 
+	cam0_dvdd_1v2_en_default: cam0-dvdd-1v2-en {
+		pins = "gpio12";
+		function = "normal";
+
+		bias-pull-up;
+		drive-push-pull;
+		qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
+	};
+
+	cam0_avdd_2v8_en_default: cam0-avdd-2v8-en {
+		pins = "gpio10";
+		function = "normal";
+
+		bias-pull-up;
+		drive-push-pull;
+		qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
+	};
+
 	vol_up_pin_a: vol-up-active {
 		pins = "gpio6";
 		function = "normal";
@@ -434,6 +486,42 @@ &sdhc_2 {
 };
 
 &tlmm {
+	cam0_default: cam0_default {
+		rst {
+			pins = "gpio9";
+			function = "gpio";
+
+			drive-strength = <16>;
+			bias-disable;
+		};
+
+		mclk0 {
+			pins = "gpio13";
+			function = "cam_mclk";
+
+			drive-strength = <16>;
+			bias-disable;
+		};
+	};
+
+	cam3_default: cam3_default {
+		rst {
+			function = "gpio";
+			pins = "gpio21";
+
+			drive-strength = <16>;
+			bias-disable;
+		};
+
+		mclk3 {
+			function = "cam_mclk";
+			pins = "gpio16";
+
+			drive-strength = <16>;
+			bias-disable;
+		};
+	};
+
 	pcie0_pwren_state: pcie0-pwren {
 		pins = "gpio90";
 		function = "gpio";
@@ -612,6 +700,96 @@ pinconf-rx {
 	};
 };
 
+&pm8998_gpio {
+
+};
+
 &cci {
 	status = "ok";
 };
+
+&cci_i2c0 {
+	camera@10 {
+		compatible = "ovti,ov8856";
+		reg = <0x10>;
+
+		// CAM0_RST_N
+		reset-gpios = <&tlmm 9 0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&cam0_default>;
+		gpios = <&tlmm 13 0>,
+			<&tlmm 9 0>;
+
+		clocks = <&clock_camcc CAM_CC_MCLK0_CLK>;
+		clock-names = "xvclk";
+		clock-frequency = <19200000>;
+
+		/* The &vreg_s4a_1p8 trace is powered on as a,
+		 * so it is represented by a fixed regulator.
+		 *
+		 * The 2.8V vdda-supply and 1.2V vddd-supply regulators
+		 * both have to be enabled through the power management
+		 * gpios.
+		 */
+		power-domains = <&clock_camcc TITAN_TOP_GDSC>;
+
+		dovdd-supply = <&vreg_lvs1a_1p8>;
+		avdd-supply = <&cam0_avdd_2v8>;
+		dvdd-supply = <&cam0_dvdd_1v2>;
+
+		status = "disable";
+
+		port {
+			ov8856_ep: endpoint {
+				clock-lanes = <1>;
+				link-frequencies = /bits/ 64
+					<360000000 180000000>;
+				data-lanes = <1 2 3 4>;
+//				remote-endpoint = <&csiphy0_ep>;
+			};
+		};
+	};
+};
+
+&cci_i2c1 {
+	camera@60 {
+		compatible = "ovti,ov7251";
+
+		// I2C address as per ov7251.txt linux documentation
+		reg = <0x60>;
+
+		// CAM3_RST_N
+		enable-gpios = <&tlmm 21 0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&cam3_default>;
+		gpios = <&tlmm 16 0>,
+			<&tlmm 21 0>;
+
+		clocks = <&clock_camcc CAM_CC_MCLK3_CLK>;
+		clock-names = "xclk";
+		clock-frequency = <24000000>;
+
+		/* The &vreg_s4a_1p8 trace always powered on.
+		 *
+		 * The 2.8V vdda-supply regulator is enabled when the
+		 * vreg_s4a_1p8 trace is pulled high.
+		 * It too is represented by a fixed regulator.
+		 *
+		 * No 1.2V vddd-supply regulator is used.
+		 */
+		power-domains = <&clock_camcc TITAN_TOP_GDSC>;
+
+		vdddo-supply = <&vreg_lvs1a_1p8>;
+		vdda-supply = <&cam3_avdd_2v8>;
+
+		status = "disable";
+
+		port {
+			ov7251_ep: endpoint {
+				clock-lanes = <1>;
+				data-lanes = <0 1>;
+//				remote-endpoint = <&csiphy3_ep>;
+			};
+		};
+	};
+};
-- 
2.25.1