[PATCH v6 6/6][DO NOT MERGE] arm64: dts: allwinner: bananapi-m64: Add HDF5640 camera module

[Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>]

Bananapi M64 comes with an optional sensor based on the ov5640,
add support for it with below pin information.

- PE13, PE12 via i2c-gpio bitbanging
- CLK_CSI_MCLK as external clock
- PE1 as external clock pin muxing
- DLDO3 as AVDD supply
- ALDO1 as DOVDD supply
- ELDO3 as DVDD supply
- PE16 gpio for reset pin
- PE17 gpio for powerdown pin

Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>
---
 .../dts/allwinner/sun50i-a64-bananapi-m64.dts | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
index 83e30e0afe5b..c185ceec8c81 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
@@ -60,6 +60,41 @@
 		stdout-path = "serial0:115200n8";
 	};
 
+	i2c-csi {
+		compatible = "i2c-gpio";
+		sda-gpios = <&pio 4 13 GPIO_ACTIVE_HIGH>; /* CSI0-SDA: PE13 */
+		scl-gpios = <&pio 4 12 GPIO_ACTIVE_HIGH>; /* CSI0-SCK: PE12 */
+		i2c-gpio,delay-us = <5>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ov5640: camera@3c {
+			compatible = "ovti,ov5640";
+			reg = <0x3c>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&csi_mclk_pin>;
+			clocks = <&ccu CLK_CSI_MCLK>;
+			clock-names = "xclk";
+
+			AVDD-supply = <&reg_dldo3>;
+			DOVDD-supply = <&reg_aldo1>;
+			DVDD-supply = <&reg_eldo3>;
+			reset-gpios = <&pio 4 16 GPIO_ACTIVE_LOW>; /* CSI0-RST: PE16 */
+			powerdown-gpios = <&pio 4 17 GPIO_ACTIVE_HIGH>; /* CSI0-PWDN: PE17 */
+
+			port {
+				ov5640_ep: endpoint {
+					remote-endpoint = <&csi_ep>;
+					bus-width = <8>;
+					hsync-active = <1>; /* Active high */
+					vsync-active = <0>; /* Active low */
+					data-active = <1>;  /* Active high */
+					pclk-sample = <1>;  /* Rising */
+				};
+			};
+		};
+	};
+
 	hdmi-connector {
 		compatible = "hdmi-connector";
 		type = "a";
@@ -106,6 +141,24 @@
 	status = "okay";
 };
 
+&csi {
+	status = "okay";
+
+	port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		csi_ep: endpoint {
+			remote-endpoint = <&ov5640_ep>;
+			bus-width = <8>;
+			hsync-active = <1>; /* Active high */
+			vsync-active = <0>; /* Active low */
+			data-active = <1>;  /* Active high */
+			pclk-sample = <1>;  /* Rising */
+		};
+	};
+};
+
 &dai {
 	status = "okay";
 };
@@ -296,6 +349,12 @@
 	regulator-name = "vcc-wifi";
 };
 
+&reg_dldo3 {
+	regulator-min-microvolt = <2800000>;
+	regulator-max-microvolt = <2800000>;
+	regulator-name = "avdd-csi";
+};
+
 &reg_dldo4 {
 	regulator-min-microvolt = <1800000>;
 	regulator-max-microvolt = <3300000>;
@@ -313,6 +372,12 @@
 	regulator-name = "cpvdd";
 };
 
+&reg_eldo3 {
+	regulator-min-microvolt = <1500000>;
+	regulator-max-microvolt = <1500000>;
+	regulator-name = "dvdd-csi";
+};
+
 &reg_fldo1 {
 	regulator-min-microvolt = <1200000>;
 	regulator-max-microvolt = <1200000>;
-- 
2.18.0.321.gffc6fa0e3