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     additionalProperties: true
  50     properties:
  51       reg:
  52         maxItems: 1
  53
  54     required:
  55       - reg
  56
  57 required:
  58   - compatible
  59   - reg
  60   - "#address-cells"
  61   - "#size-cells"
  62   - ranges
  63   - allwinner,sram
  64
  65 additionalProperties: false
  66
  67 examples:
  68   - |
  69     bus@1000000 {
  70         compatible = "allwinner,sun50i-a64-de2";
  71         reg = <0x1000000 0x400000>;
  72         allwinner,sram = <&de2_sram 1>;
  73         #address-cells = <1>;
  74         #size-cells = <1>;
  75         ranges = <0 0x1000000 0x400000>;
  76
  77         display_clocks: clock@0 {
  78             compatible = "allwinner,sun50i-a64-de2-clk";
  79             reg = <0x0 0x100000>;
  80             clocks = <&ccu 52>, <&ccu 99>;
  81             clock-names = "bus", "mod";
  82             resets = <&ccu 30>;
  83             #clock-cells = <1>;
  84             #reset-cells = <1>;
  85         };
  86     };
  87
  88 ...