Documentation/devicetree/bindings/bus/allwinner,sun50i-a64-de2.yaml

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/bus/allwinner,sun50i-a64-de2.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Allwinner A64 Display Engine Bus
   8
   9 maintainers:
  10   - Chen-Yu Tsai <wens@csie.org>
  11   - Maxime Ripard <mripard@kernel.org>
  12
  13 properties:
  14   $nodename:
  15     pattern: "^bus(@[0-9a-f]+)?$"
  16
  17   "#address-cells":
  18     const: 1
  19
  20   "#size-cells":
  21     const: 1
  22
  23   compatible:
  24     oneOf:
  25       - const: allwinner,sun50i-a64-de2
  26       - items:
  27           - const: allwinner,sun50i-h6-de3
  28           - const: allwinner,sun50i-a64-de2
  29
  30   reg:
  31     maxItems: 1
  32
  33   allwinner,sram:
  34     description:
  35       The SRAM that needs to be claimed to access the display engine
  36       bus.
  37     $ref: /schemas/types.yaml#/definitions/phandle-array
  38     items:
  39       - items:
  40           - description: phandle to SRAM
  41           - description: register value for device
  42
  43   ranges: true
  44
  45 patternProperties:
  46   # All other properties should be child nodes with unit-address and 'reg'
  47   "^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-fA-F]+$":
  48     type: object
  49     properties:
  50       reg:
  51         maxItems: 1
  52
  53     required:
  54       - reg
  55
  56 required:
  57   - compatible
  58   - reg
  59   - "#address-cells"
  60   - "#size-cells"
  61   - ranges
  62   - allwinner,sram
  63
  64 additionalProperties: false
  65
  66 examples:
  67   - |
  68     bus@1000000 {
  69         compatible = "allwinner,sun50i-a64-de2";
  70         reg = <0x1000000 0x400000>;
  71         allwinner,sram = <&de2_sram 1>;
  72         #address-cells = <1>;
  73         #size-cells = <1>;
  74         ranges = <0 0x1000000 0x400000>;
  75
  76         display_clocks: clock@0 {
  77             compatible = "allwinner,sun50i-a64-de2-clk";
  78             reg = <0x0 0x100000>;
  79             clocks = <&ccu 52>, <&ccu 99>;
  80             clock-names = "bus", "mod";
  81             resets = <&ccu 30>;
  82             #clock-cells = <1>;
  83             #reset-cells = <1>;
  84         };
  85     };
  86
  87 ...