allwinner,sun4i-a10-csi.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/media/allwinner,sun4i-a10-csi.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Allwinner A10 CMOS Sensor Interface (CSI) Device Tree Bindings
    8 
    9 maintainers:
   10   - Chen-Yu Tsai <wens@csie.org>
   11   - Maxime Ripard <mripard@kernel.org>
   12 
   13 description: |-
   14   The Allwinner A10 and later has a CMOS Sensor Interface to retrieve
   15   frames from a parallel or BT656 sensor.
   16 
   17 properties:
   18   compatible:
   19     oneOf:
   20       - const: allwinner,sun4i-a10-csi1
   21       - const: allwinner,sun7i-a20-csi0
   22       - items:
   23           - const: allwinner,sun7i-a20-csi1
   24           - const: allwinner,sun4i-a10-csi1
   25       - items:
   26           - const: allwinner,sun8i-r40-csi0
   27           - const: allwinner,sun7i-a20-csi0
   28 
   29   reg:
   30     maxItems: 1
   31 
   32   interrupts:
   33     maxItems: 1
   34 
   35   clocks:
   36     oneOf:
   37       - items:
   38           - description: The CSI interface clock
   39           - description: The CSI DRAM clock
   40 
   41       - items:
   42           - description: The CSI interface clock
   43           - description: The CSI ISP clock
   44           - description: The CSI DRAM clock
   45 
   46   clock-names:
   47     oneOf:
   48       - items:
   49           - const: bus
   50           - const: ram
   51 
   52       - items:
   53           - const: bus
   54           - const: isp
   55           - const: ram
   56 
   57   resets:
   58     maxItems: 1
   59 
   60   # FIXME: This should be made required eventually once every SoC will
   61   # have the MBUS declared.
   62   interconnects:
   63     maxItems: 1
   64 
   65   # FIXME: This should be made required eventually once every SoC will
   66   # have the MBUS declared.
   67   interconnect-names:
   68     const: dma-mem
   69 
   70   port:
   71     $ref: /schemas/graph.yaml#/$defs/port-base
   72     additionalProperties: false
   73 
   74     properties:
   75       endpoint:
   76         $ref: video-interfaces.yaml#
   77         unevaluatedProperties: false
   78 
   79         properties:
   80           bus-width:
   81             enum: [8, 16]
   82 
   83           data-active: true
   84           hsync-active: true
   85           pclk-sample: true
   86           vsync-active: true
   87 
   88         required:
   89           - bus-width
   90           - data-active
   91           - hsync-active
   92           - pclk-sample
   93           - vsync-active
   94 
   95 required:
   96   - compatible
   97   - reg
   98   - interrupts
   99   - clocks
  100 
  101 additionalProperties: false
  102 
  103 examples:
  104   - |
  105     #include <dt-bindings/interrupt-controller/arm-gic.h>
  106     #include <dt-bindings/clock/sun7i-a20-ccu.h>
  107     #include <dt-bindings/reset/sun4i-a10-ccu.h>
  108 
  109     csi0: csi@1c09000 {
  110         compatible = "allwinner,sun7i-a20-csi0";
  111         reg = <0x01c09000 0x1000>;
  112         interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;
  113         clocks = <&ccu CLK_AHB_CSI0>, <&ccu CLK_CSI_SCLK>, <&ccu CLK_DRAM_CSI0>;
  114         clock-names = "bus", "isp", "ram";
  115         resets = <&ccu RST_CSI0>;
  116 
  117         port {
  118             csi_from_ov5640: endpoint {
  119                 remote-endpoint = <&ov5640_to_csi>;
  120                 bus-width = <8>;
  121                 hsync-active = <1>; /* Active high */
  122                 vsync-active = <0>; /* Active low */
  123                 data-active = <1>;  /* Active high */
  124                 pclk-sample = <1>;  /* Rising */
  125             };
  126         };
  127     };
  128 
  129 ...

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sys/contrib/device-tree/Bindings/media/allwinner,sun4i-a10-csi.yaml