Documentation/devicetree/bindings/display/allwinner,sun4i-a10-display-frontend.yaml

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/display/allwinner,sun4i-a10-display-frontend.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Allwinner A10 Display Engine Frontend Device Tree Bindings
   8
   9 maintainers:
  10   - Chen-Yu Tsai <wens@csie.org>
  11   - Maxime Ripard <mripard@kernel.org>
  12
  13 description: |
  14   The display engine frontend does formats conversion, scaling,
  15   deinterlacing and color space conversion.
  16
  17 properties:
  18   compatible:
  19     enum:
  20       - allwinner,sun4i-a10-display-frontend
  21       - allwinner,sun5i-a13-display-frontend
  22       - allwinner,sun6i-a31-display-frontend
  23       - allwinner,sun7i-a20-display-frontend
  24       - allwinner,sun8i-a23-display-frontend
  25       - allwinner,sun8i-a33-display-frontend
  26       - allwinner,sun9i-a80-display-frontend
  27
  28   reg:
  29     maxItems: 1
  30
  31   interrupts:
  32     maxItems: 1
  33
  34   clocks:
  35     items:
  36       - description: The frontend interface clock
  37       - description: The frontend module clock
  38       - description: The frontend DRAM clock
  39
  40   clock-names:
  41     items:
  42       - const: ahb
  43       - const: mod
  44       - const: ram
  45
  46   # FIXME: This should be made required eventually once every SoC will
  47   # have the MBUS declared.
  48   interconnects:
  49     maxItems: 1
  50
  51   # FIXME: This should be made required eventually once every SoC will
  52   # have the MBUS declared.
  53   interconnect-names:
  54     const: dma-mem
  55
  56   resets:
  57     maxItems: 1
  58
  59   ports:
  60     $ref: /schemas/graph.yaml#/properties/ports
  61
  62     properties:
  63       port@0:
  64         $ref: /schemas/graph.yaml#/properties/port
  65         description: |
  66           Input endpoints of the controller.
  67
  68       port@1:
  69         $ref: /schemas/graph.yaml#/properties/port
  70         description: |
  71           Output endpoints of the controller.
  72
  73     required:
  74       - port@1
  75
  76 required:
  77   - compatible
  78   - reg
  79   - interrupts
  80   - clocks
  81   - clock-names
  82   - resets
  83   - ports
  84
  85 additionalProperties: false
  86
  87 examples:
  88   - |
  89     #include <dt-bindings/clock/sun4i-a10-ccu.h>
  90     #include <dt-bindings/reset/sun4i-a10-ccu.h>
  91
  92     fe0: display-frontend@1e00000 {
  93         compatible = "allwinner,sun4i-a10-display-frontend";
  94         reg = <0x01e00000 0x20000>;
  95         interrupts = <47>;
  96         clocks = <&ccu CLK_AHB_DE_FE0>, <&ccu CLK_DE_FE0>,
  97                  <&ccu CLK_DRAM_DE_FE0>;
  98         clock-names = "ahb", "mod",
  99                       "ram";
 100         resets = <&ccu RST_DE_FE0>;
 101
 102         ports {
 103             #address-cells = <1>;
 104             #size-cells = <0>;
 105
 106             fe0_out: port@1 {
 107                 #address-cells = <1>;
 108                 #size-cells = <0>;
 109                 reg = <1>;
 110
 111                 fe0_out_be0: endpoint@0 {
 112                     reg = <0>;
 113                     remote-endpoint = <&be0_in_fe0>;
 114                 };
 115
 116                 fe0_out_be1: endpoint@1 {
 117                     reg = <1>;
 118                     remote-endpoint = <&be1_in_fe0>;
 119                 };
 120             };
 121         };
 122     };
 123
 124
 125 ...