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 Device Tree Bindings
   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           - const: allwinner,sun8i-h3-spi
  30
  31   reg:
  32     maxItems: 1
  33
  34   interrupts:
  35     maxItems: 1
  36
  37   clocks:
  38     items:
  39       - description: Bus Clock
  40       - description: Module Clock
  41
  42   clock-names:
  43     items:
  44       - const: ahb
  45       - const: mod
  46
  47   resets:
  48     maxItems: 1
  49
  50   dmas:
  51     items:
  52       - description: RX DMA Channel
  53       - description: TX DMA Channel
  54
  55   dma-names:
  56     items:
  57       - const: rx
  58       - const: tx
  59
  60   num-cs: true
  61
  62 patternProperties:
  63   "^.*@[0-9a-f]+":
  64     type: object
  65     properties:
  66       reg:
  67         items:
  68           minimum: 0
  69           maximum: 4
  70
  71       spi-rx-bus-width:
  72         const: 1
  73
  74       spi-tx-bus-width:
  75         const: 1
  76
  77 required:
  78   - compatible
  79   - reg
  80   - interrupts
  81   - clocks
  82   - clock-names
  83
  84 additionalProperties: false
  85
  86 examples:
  87   - |
  88     spi1: spi@1c69000 {
  89         compatible = "allwinner,sun6i-a31-spi";
  90         reg = <0x01c69000 0x1000>;
  91         interrupts = <0 66 4>;
  92         clocks = <&ahb1_gates 21>, <&spi1_clk>;
  93         clock-names = "ahb", "mod";
  94         resets = <&ahb1_rst 21>;
  95         #address-cells = <1>;
  96         #size-cells = <0>;
  97     };
  98
  99   - |
 100     spi0: spi@1c68000 {
 101         compatible = "allwinner,sun8i-h3-spi";
 102         reg = <0x01c68000 0x1000>;
 103         interrupts = <0 65 4>;
 104         clocks = <&ccu 30>, <&ccu 82>;
 105         clock-names = "ahb", "mod";
 106         dmas = <&dma 23>, <&dma 23>;
 107         dma-names = "rx", "tx";
 108         resets = <&ccu 15>;
 109         #address-cells = <1>;
 110         #size-cells = <0>;
 111     };
 112
 113 ...