overlay: Add ov4657 camera module support

Signed-off-by: zhu <[email protected]>

Author: ZhuBin32

arch/arm64/boot/dts/rockchip/overlays-rockpi4/Makefile

@@ -15,7 +15,8 @@ dtbo-$(CONFIG_ARCH_ROCKCHIP) += \
 	hifiberry-dacplus.dtbo \
 	raspberrypi-7-inch-lcd.dtbo \
 	cpufreq.dtbo \
-	imx219.dtbo
+	imx219.dtbo \
+	ov5647.dtbo
 
 targets += dtbs dtbs_install
 targets += $(dtbo-y)

arch/arm64/boot/dts/rockchip/overlays-rockpi4/hw_intfc.conf

@@ -59,5 +59,8 @@ intfc:dtoverlay=console-on-ttyS2
 # setting cpu frequency over-2GHz
 #intfc:dtoverlay=cpufreq
 
-# Add imx219 camera module support
-#intfc:dtoverlay=imx219
+# Add imx219 camera module support. Need disabled ov5647 camera module.
+#intfc:dtoverlay=imx219
+
+# Add ov5647 camera module support. Need disabled imx219 camera module.
+#intfc:dtoverlay=ov5647

arch/arm64/boot/dts/rockchip/overlays-rockpi4/ov5647-overlay.dts

@@ -0,0 +1,31 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	model = "ROCK PI 4B";
+	compatible = "rockchip,rockpi","rockchip,rk3399";
+
+	fragment@0 {
+		target = <&i2c4>;
+
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&camera2>;
+
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&mipi_in_ucam0>;
+
+		__overlay__ {
+			remote-endpoint = <&ucam_out1>;
+		};
+	};
+};

arch/arm64/boot/dts/rockchip/rockpi-4b-linux.dts

@@ -628,6 +628,23 @@
 			};
 		};
 	};
+
+	camera2: camera-module@36 {
+		status = "disabled";
+		compatible = "ovti,ov5647";
+		reg = <0x36>;
+
+		clocks = <&cru SCLK_CIF_OUT>;
+		clock-names = "clk_cif_out";
+		pinctrl-names = "rockchip,camera_default";
+
+		port {
+			ucam_out1: endpoint {
+				remote-endpoint = <&mipi_in_ucam0>;
+				data-lanes = <1 2>;
+			};
+		};
+	};
 };
 
 &i2c2 {
@@ -961,7 +978,8 @@
 		i2c4_xfer: i2c4-xfer {
 			rockchip,pins =
 				<1 12 RK_FUNC_1 &pcfg_pull_up>,
-				<1 11 RK_FUNC_1 &pcfg_pull_up>;
+				<1 11 RK_FUNC_1 &pcfg_pull_up>,
+				<1 13 RK_FUNC_GPIO &pcfg_pull_up>;	//camera module enable pin
 		};
 	};
 	i2s0 {

drivers/media/i2c/ov5647.c

@@ -857,7 +857,7 @@ static int ov5647_probe(struct i2c_client *client,
 	}
 
 	xclk_freq = clk_get_rate(sensor->xclk);
-	if (xclk_freq != 25000000) {
+	if (xclk_freq != 6000000) {
 		dev_err(dev, "Unsupported clock frequency: %u\n", xclk_freq);
 		return -EINVAL;
 	}