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           - const: allwinner,sun8i-h3-spi
  29
  30   reg:
  31     maxItems: 1
  32
  33   interrupts:
  34     maxItems: 1
  35
  36   clocks:
  37     items:
  38       - description: Bus Clock
  39       - description: Module Clock
  40
  41   clock-names:
  42     items:
  43       - const: ahb
  44       - const: mod
  45
  46   resets:
  47     maxItems: 1
  48
  49   dmas:
  50     items:
  51       - description: RX DMA Channel
  52       - description: TX DMA Channel
  53
  54   dma-names:
  55     items:
  56       - const: rx
  57       - const: tx
  58
  59   num-cs: true
  60
  61 patternProperties:
  62   "^.*@[0-9a-f]+":
  63     type: object
  64     properties:
  65       reg:
  66         items:
  67           minimum: 0
  68           maximum: 4
  69
  70       spi-rx-bus-width:
  71         const: 1
  72
  73       spi-tx-bus-width:
  74         const: 1
  75
  76 required:
  77   - compatible
  78   - reg
  79   - interrupts
  80   - clocks
  81   - clock-names
  82
  83 additionalProperties: false
  84
  85 examples:
  86   - |
  87     spi1: spi@1c69000 {
  88         compatible = "allwinner,sun6i-a31-spi";
  89         reg = <0x01c69000 0x1000>;
  90         interrupts = <0 66 4>;
  91         clocks = <&ahb1_gates 21>, <&spi1_clk>;
  92         clock-names = "ahb", "mod";
  93         resets = <&ahb1_rst 21>;
  94         #address-cells = <1>;
  95         #size-cells = <0>;
  96     };
  97
  98   - |
  99     spi0: spi@1c68000 {
 100         compatible = "allwinner,sun8i-h3-spi";
 101         reg = <0x01c68000 0x1000>;
 102         interrupts = <0 65 4>;
 103         clocks = <&ccu 30>, <&ccu 82>;
 104         clock-names = "ahb", "mod";
 105         dmas = <&dma 23>, <&dma 23>;
 106         dma-names = "rx", "tx";
 107         resets = <&ccu 15>;
 108         #address-cells = <1>;
 109         #size-cells = <0>;
 110     };
 111
 112 ...