drivers: video: Use video interfaces binding for ov7670 and smartdma

Have ov7670 and video smartdma use video interfaces binding. With
this, we can fix the chicken-egg issue in init priority and don't need
the workaround anymore.

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

Author: ngphibang

boards/nxp/frdm_mcxn947/frdm_mcxn947.dtsi

@@ -100,6 +100,12 @@ nxp_8080_touch_panel_i2c: &flexcomm2_lpi2c2 {
 		reset-gpios = <&gpio1 19 GPIO_ACTIVE_HIGH>;
 		pwdn-gpios = <&gpio1 18 GPIO_ACTIVE_HIGH>;
 		reg = <0x21>;
+
+		port {
+			ov7670_ep_out: endpoint {
+				remote-endpoint-label = "sdma_ep_in";
+			};
+		};
 	};
 };
 
@@ -112,10 +118,15 @@ nxp_8080_touch_panel_i2c: &flexcomm2_lpi2c2 {
 		compatible = "nxp,video-smartdma";
 		pinctrl-0 = <&pinmux_smartdma_camera>;
 		pinctrl-names = "default";
-		sensor = <&ov7670>;
 		vsync-pin = <4>;
 		hsync-pin = <11>;
 		pclk-pin = <5>;
+
+		port {
+			sdma_ep_in: endpoint {
+				remote-endpoint-label = "ov7670_ep_out";
+			};
+		};
 	};
 };
 

drivers/video/video_mcux_smartdma.c

@@ -365,7 +365,7 @@ static DEVICE_API(video, nxp_video_sdma_api) = {
 	.flush = nxp_video_sdma_flush
 };
 
-#define SOURCE_DEV(inst) DEVICE_DT_GET(DT_INST_PHANDLE(inst, sensor))
+#define SOURCE_DEV(inst) DEVICE_DT_GET(DT_NODE_REMOTE_DEVICE(DT_INST_ENDPOINT_BY_ID(inst, 0, 0)))
 
 #define NXP_VIDEO_SDMA_INIT(inst)                                                                  \
 	PINCTRL_DT_INST_DEFINE(inst);                                                              \

dts/bindings/video/nxp,video-smartdma.yaml

@@ -8,10 +8,6 @@ compatible: "nxp,video-smartdma"
 include: [base.yaml, pinctrl-device.yaml]
 
 properties:
-  sensor:
-    required: true
-    type: phandle
-    description: phandle of connected sensor device
   vsync-pin:
     required: true
     type: int
@@ -27,3 +23,7 @@ properties:
     type: int
     description: |
       GPIO0 pin index to use for PCLK input. Only pins 0-15 may be used.
+
+child-binding:
+  child-binding:
+    include: video-interfaces.yaml

dts/bindings/video/ovti,ov7670.yaml

@@ -18,3 +18,7 @@ properties:
       receives this as an active high signal
 
 include: i2c-device.yaml
+
+child-binding:
+  child-binding:
+    include: video-interfaces.yaml

samples/drivers/video/capture/boards/frdm_mcxn947_cpu0.conf

@@ -1,5 +1,2 @@
 CONFIG_VIDEO_BUFFER_POOL_SZ_MAX=40000
 CONFIG_VIDEO_BUFFER_POOL_NUM_MAX=2
-# Workaround for issue where SDMA driver needs to start before camera, so that
-# clock output will be generated for camera device
-CONFIG_CHECK_INIT_PRIORITIES=n