Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/spi/allwinner,sun6i-a31-spi.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Allwinner A31 SPI Controller
   8
   9 allOf:
  10   - $ref: "spi-controller.yaml"
  11
  12 maintainers:
  13   - Chen-Yu Tsai <wens@csie.org>
  14   - Maxime Ripard <mripard@kernel.org>
  15
  16 properties:
  17   "#address-cells": true
  18   "#size-cells": true
  19
  20   compatible:
  21     oneOf:
  22       - const: allwinner,sun6i-a31-spi
  23       - const: allwinner,sun8i-h3-spi
  24       - items:
  25           - enum:
  26               - allwinner,sun8i-r40-spi
  27               - allwinner,sun50i-h6-spi
  28               - allwinner,sun50i-h616-spi
  29               - allwinner,suniv-f1c100s-spi
  30           - const: allwinner,sun8i-h3-spi
  31
  32   reg:
  33     maxItems: 1
  34
  35   interrupts:
  36     maxItems: 1
  37
  38   clocks:
  39     items:
  40       - description: Bus Clock
  41       - description: Module Clock
  42
  43   clock-names:
  44     items:
  45       - const: ahb
  46       - const: mod
  47
  48   resets:
  49     maxItems: 1
  50
  51   dmas:
  52     items:
  53       - description: RX DMA Channel
  54       - description: TX DMA Channel
  55
  56   dma-names:
  57     items:
  58       - const: rx
  59       - const: tx
  60
  61   num-cs: true
  62
  63 patternProperties:
  64   "^.*@[0-9a-f]+":
  65     type: object
  66     properties:
  67       reg:
  68         items:
  69           minimum: 0
  70           maximum: 4
  71
  72       spi-rx-bus-width:
  73         const: 1
  74
  75       spi-tx-bus-width:
  76         const: 1
  77
  78 required:
  79   - compatible
  80   - reg
  81   - interrupts
  82   - clocks
  83   - clock-names
  84
  85 additionalProperties: false
  86
  87 examples:
  88   - |
  89     spi1: spi@1c69000 {
  90         compatible = "allwinner,sun6i-a31-spi";
  91         reg = <0x01c69000 0x1000>;
  92         interrupts = <0 66 4>;
  93         clocks = <&ahb1_gates 21>, <&spi1_clk>;
  94         clock-names = "ahb", "mod";
  95         resets = <&ahb1_rst 21>;
  96         #address-cells = <1>;
  97         #size-cells = <0>;
  98     };
  99
 100   - |
 101     spi0: spi@1c68000 {
 102         compatible = "allwinner,sun8i-h3-spi";
 103         reg = <0x01c68000 0x1000>;
 104         interrupts = <0 65 4>;
 105         clocks = <&ccu 30>, <&ccu 82>;
 106         clock-names = "ahb", "mod";
 107         dmas = <&dma 23>, <&dma 23>;
 108         dma-names = "rx", "tx";
 109         resets = <&ccu 15>;
 110         #address-cells = <1>;
 111         #size-cells = <0>;
 112     };
 113
 114 ...