dts: overlay: ov5647: Specify clock-noncontinuous on CSI endpoint

The OV5647 declares that it wants a non-continuous clock in its endpoint
configuration. However, it does not expose this information via
get_mbus_config. Even if it would implement get_mbus_config the
bcm2835-unicam driver would not evaluate the flags field of it.

By also specifying clock-noncontinuous on the CSI endpoint itself, the
CSI driver properly picks up the requests and enables the non-continuous
clock mode.

Signed-off-by: Christian Speich <christian@spei.ch>

arch/arm/boot/dts/overlays/camera-mux-2port-overlay.dts

@@ -453,6 +453,7 @@
 			      <&imx708_0>,"lens-focus:0=", <&imx708_0_vcm>;
 		cam0-ov5647 = <&mux_in0>, "remote-endpoint:0=",<&ov5647_0_ep>,
 			      <&ov5647_0_ep>, "remote-endpoint:0=",<&mux_in0>,
+			      <&mux_in0>, "clock-noncontinuous?",
 			      <&ov5647_0>, "status=okay";
 		cam0-ov7251 = <&mux_in0>, "remote-endpoint:0=",<&ov7251_0_ep>,
 			      <&ov7251_0_ep>, "remote-endpoint:0=",<&mux_in0>,
@@ -505,6 +506,7 @@
 			      <&imx708_1>,"lens-focus:0=", <&imx708_1_vcm>;
 		cam1-ov5647 = <&mux_in1>, "remote-endpoint:0=",<&ov5647_1_ep>,
 			      <&ov5647_1_ep>, "remote-endpoint:0=",<&mux_in1>,
+			      <&mux_in1>, "clock-noncontinuous?",
 			      <&ov5647_1>, "status=okay";
 		cam1-ov7251 = <&mux_in1>, "remote-endpoint:0=",<&ov7251_1_ep>,
 			      <&ov7251_1_ep>, "remote-endpoint:0=",<&mux_in1>,

arch/arm/boot/dts/overlays/camera-mux-4port-overlay.dts

@@ -748,6 +748,7 @@
 			      <&imx708_0>,"lens-focus:0=", <&imx708_0_vcm>;
 		cam0-ov5647 = <&mux_in0>, "remote-endpoint:0=",<&ov5647_0_ep>,
 			      <&ov5647_0_ep>, "remote-endpoint:0=",<&mux_in0>,
+			      <&mux_in0>, "clock-noncontinuous?",
 			      <&ov5647_0>, "status=okay";
 		cam0-ov7251 = <&mux_in0>, "remote-endpoint:0=",<&ov7251_0_ep>,
 			      <&ov7251_0_ep>, "remote-endpoint:0=",<&mux_in0>,
@@ -800,6 +801,7 @@
 			      <&imx708_1>,"lens-focus:0=", <&imx708_1_vcm>;
 		cam1-ov5647 = <&mux_in1>, "remote-endpoint:0=",<&ov5647_1_ep>,
 			      <&ov5647_1_ep>, "remote-endpoint:0=",<&mux_in1>,
+			      <&mux_in1>, "clock-noncontinuous?",
 			      <&ov5647_1>, "status=okay";
 		cam1-ov7251 = <&mux_in1>, "remote-endpoint:0=",<&ov7251_1_ep>,
 			      <&ov7251_1_ep>, "remote-endpoint:0=",<&mux_in1>,
@@ -852,6 +854,7 @@
 			      <&imx708_2>,"lens-focus:0=", <&imx708_2_vcm>;
 		cam2-ov5647 = <&mux_in2>, "remote-endpoint:0=",<&ov5647_2_ep>,
 			      <&ov5647_2_ep>, "remote-endpoint:0=",<&mux_in2>,
+			      <&mux_in2>, "clock-noncontinuous?",
 			      <&ov5647_2>, "status=okay";
 		cam2-ov7251 = <&mux_in2>, "remote-endpoint:0=",<&ov7251_2_ep>,
 			      <&ov7251_2_ep>, "remote-endpoint:0=",<&mux_in2>,
@@ -904,6 +907,7 @@
 			      <&imx708_3>,"lens-focus:0=", <&imx708_3_vcm>;
 		cam3-ov5647 = <&mux_in3>, "remote-endpoint:0=",<&ov5647_3_ep>,
 			      <&ov5647_3_ep>, "remote-endpoint:0=",<&mux_in3>,
+			      <&mux_in3>, "clock-noncontinuous?",
 			      <&ov5647_3>, "status=okay";
 		cam3-ov7251 = <&mux_in3>, "remote-endpoint:0=",<&ov7251_3_ep>,
 			      <&ov7251_3_ep>, "remote-endpoint:0=",<&mux_in3>,

arch/arm/boot/dts/overlays/ov5647-overlay.dts

@@ -34,6 +34,7 @@
 				csi_ep: endpoint {
 					remote-endpoint = <&cam_endpoint>;
 					data-lanes = <1 2>;
+					clock-noncontinuous;
 				};
 			};
 		};