drivers: video: csi: Remove source device phandle

The peer remote device "source_dev" can be retrieved from the
remote-endpoint-label. Direct reference via phandle is not needed.

Signed-off-by: Phi Bang Nguyen <phibang.nguyen@nxp.com>

Author: ngphibang

boards/madmachine/mm_swiftio/mm_swiftio.dts

@@ -192,7 +192,6 @@
 
 &csi {
 	status = "okay";
-	source = <&ov7725>;
 	pinctrl-0 = <&pinmux_csi>;
 	pinctrl-names = "default";
 

boards/shields/dvp_fpc24_mt9m114/boards/mimxrt1060_evkb.overlay

@@ -18,6 +18,16 @@
 #include <fsl_cache.h>
 #endif
 
+#if defined(CONFIG_VIDEO_MCUX_MIPI_CSI2RX)
+#define DEVICE_DT_INST_GET_SOURCE_DEV(n)                                                           \
+	DEVICE_DT_GET(DT_PARENT(DT_GPARENT(DT_NODELABEL(DT_STRING_TOKEN(                           \
+		DT_CHILD(DT_INST_CHILD(n, port), endpoint), remote_endpoint_label)))))
+#else
+#define DEVICE_DT_INST_GET_SOURCE_DEV(n)                                                           \
+	DEVICE_DT_GET(DT_GPARENT(DT_NODELABEL(DT_STRING_TOKEN(                                     \
+		DT_CHILD(DT_INST_CHILD(n, port), endpoint), remote_endpoint_label))))
+#endif
+
 struct video_mcux_csi_config {
 	CSI_Type *base;
 	const struct device *source_dev;
@@ -497,7 +507,7 @@ PINCTRL_DT_INST_DEFINE(0);
 
 static const struct video_mcux_csi_config video_mcux_csi_config_0 = {
 	.base = (CSI_Type *)DT_INST_REG_ADDR(0),
-	.source_dev = DEVICE_DT_GET(DT_INST_PHANDLE(0, source)),
+	.source_dev = DEVICE_DT_INST_GET_SOURCE_DEV(0),
 	.pincfg = PINCTRL_DT_INST_DEV_CONFIG_GET(0),
 };
 

boards/shields/dvp_fpc24_mt9m114/boards/mimxrt1064_evk.overlay

@@ -888,7 +888,6 @@
 			reg = <0x40800000 0x4000>;
 			interrupts = <56 1>;
 			status = "disabled";
-			source = <&mipi_csi2rx>;
 
 			port {
 				csi_ep_in: endpoint {

drivers/video/video_mcux_csi.c

@@ -14,12 +14,6 @@ properties:
   interrupts:
     required: true
 
-  source:
-    required: true
-    type: phandle
-    description: the connected source device,
-      e.g., a mipi csi or a camera sensor
-
 child-binding:
   child-binding:
     include: video-interfaces.yaml

dts/arm/nxp/nxp_rt11xx.dtsi

@@ -53,7 +53,6 @@
 			status = "okay";
 			interrupt-parent = <&nvic>;
 			interrupts = <56 1>;
-			source = <&test_mipi_csi2rx>;
 		};
 
 		test_mipi_csi2rx: mipi_csi2rx@33334444 {