dts: bindings: stm32-dcmi: use endpoint based properties

Update the bindings of the stm32-dcmi driver rely on
properties described within the endpoints and already
detailed within the video-interfaces.yaml.

With that, several properties located at the node root
are now moved into the port / endpoint:

  sensor -> endpoint: remote-endpoint-label
  vsync-active -> endpoint: vsync-active
  hsync-active -> endpoint: hsync-active
  pixelclk-active -> endpoint: pclk-sample
  bus-width -> endpoint: bus-width

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>

dts/bindings/video/st,stm32-dcmi.yaml

@@ -11,23 +11,21 @@ description: |
 
     &dcmi {
       status = "okay";
-      sensor = <&ov2640>;
       pinctrl-0 = <&dcmi_hsync_pa4 &dcmi_pixclk_pa6 &dcmi_vsync_pb7
                   &dcmi_d0_pc6 &dcmi_d1_pc7 &dcmi_d2_pe0 &dcmi_d3_pe1
                   &dcmi_d4_pe4 &dcmi_d5_pd3 &dcmi_d6_pe5 &dcmi_d7_pe6>;
       pinctrl-names = "default";
-      bus-width = <8>;
-      hsync-active = <0>;
-      vsync-active = <0>;
-      pixelclk-active = <1>;
-      capture-rate = <1>;
       dmas = <&dma1 0 75 (STM32_DMA_PERIPH_TO_MEMORY | STM32_DMA_PERIPH_NO_INC |
               STM32_DMA_MEM_INC | STM32_DMA_PERIPH_8BITS | STM32_DMA_MEM_32BITS |
               STM32_DMA_PRIORITY_HIGH) STM32_DMA_FIFO_1_4>;
 
       port {
         dcmi_ep_in: endpoint {
-          remote-endpoint = <&ov2640_ep_out>;
+          remote-endpoint-label = "ov2640_ep_out";
+          bus-width = <8>;
+          hsync-active = <0>;
+          vsync-active = <0>;
+          pclk-sample = <1>;
         };
       };
     };
@@ -40,64 +38,6 @@ properties:
   interrupts:
     required: true
 
-  sensor:
-    required: true
-    type: phandle
-    description: phandle of connected sensor device
-
-  bus-width:
-    type: int
-    required: true
-    enum:
-      - 8
-      - 10
-      - 12
-      - 14
-    default: 8
-    description: |
-      Number of data lines actively used, valid for the parallel busses.
-
-  hsync-active:
-    type: int
-    required: true
-    enum:
-      - 0
-      - 1
-    description: |
-      Polarity of horizontal synchronization (DCMI_HSYNC_Polarity).
-      0 Horizontal synchronization active Low.
-      1 Horizontal synchronization active High.
-
-      For example, if DCMI_HSYNC_Polarity is programmed active high:
-      When HSYNC is low, the data is valid.
-      When HSYNC is high, the data is not valid (horizontal blanking).
-
-  vsync-active:
-    type: int
-    required: true
-    enum:
-      - 0
-      - 1
-    description: |
-      Polarity of vertical synchronization (DCMI_VSYNC_Polarity).
-      0 Vertical synchronization active Low.
-      1 Vertical synchronization active High.
-
-      For example, if DCMI_VSYNC_Polarity is programmed active high:
-      When VSYNC is low, the data is valid.
-      When VSYNC is high, the data is not valid (vertical blanking).
-
-  pixelclk-active:
-    type: int
-    required: true
-    enum:
-      - 0
-      - 1
-    description: |
-      Polarity of pixel clock (DCMI_PIXCK_Polarity).
-      0 Pixel clock active on Falling edge.
-      1 Pixel clock active on Rising edge.
-
   capture-rate:
     type: int
     enum:
@@ -122,3 +62,7 @@ properties:
       dmas = <&dma1 0 75 (STM32_DMA_PERIPH_TO_MEMORY | STM32_DMA_PERIPH_NO_INC |
               STM32_DMA_MEM_INC | STM32_DMA_PERIPH_8BITS | STM32_DMA_MEM_32BITS |
               STM32_DMA_PRIORITY_HIGH) STM32_DMA_FIFO_1_4>;
+
+child-binding:
+  child-binding:
+    include: video-interfaces.yaml