bindings/i2c/marvell,mv64xxx-i2c.yaml

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/i2c/marvell,mv64xxx-i2c.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Marvell MV64XXX I2C Controller
   8
   9 maintainers:
  10   - Gregory CLEMENT <gregory.clement@bootlin.com>
  11
  12 properties:
  13   compatible:
  14     oneOf:
  15       - const: allwinner,sun4i-a10-i2c
  16       - items:
  17           - const: allwinner,sun7i-a20-i2c
  18           - const: allwinner,sun4i-a10-i2c
  19       - const: allwinner,sun6i-a31-i2c
  20       - items:
  21           - enum:
  22               - allwinner,suniv-f1c100s-i2c
  23               - allwinner,sun8i-a23-i2c
  24               - allwinner,sun8i-a83t-i2c
  25               - allwinner,sun8i-v536-i2c
  26               - allwinner,sun50i-a64-i2c
  27               - allwinner,sun50i-h6-i2c
  28           - const: allwinner,sun6i-a31-i2c
  29       - description: Allwinner SoCs with offload support
  30         items:
  31           - enum:
  32               - allwinner,sun20i-d1-i2c
  33               - allwinner,sun50i-a100-i2c
  34               - allwinner,sun50i-h616-i2c
  35               - allwinner,sun50i-r329-i2c
  36           - const: allwinner,sun8i-v536-i2c
  37           - const: allwinner,sun6i-a31-i2c
  38       - const: marvell,mv64xxx-i2c
  39       - const: marvell,mv78230-i2c
  40       - const: marvell,mv78230-a0-i2c
  41
  42     description:
  43       Only use "marvell,mv78230-a0-i2c" for a very rare, initial
  44       version of the SoC which had broken offload support. Linux
  45       auto-detects this and sets it appropriately.
  46
  47   reg:
  48     maxItems: 1
  49
  50   interrupts:
  51     maxItems: 1
  52
  53   clocks:
  54     minItems: 1
  55     items:
  56       - description: Reference clock for the I2C bus
  57       - description: Bus clock (Only for Armada 7K/8K)
  58
  59   clock-names:
  60     minItems: 1
  61     items:
  62       - const: core
  63       - const: reg
  64     description:
  65       Mandatory if two clocks are used (only for Armada 7k and 8k).
  66
  67   resets:
  68     maxItems: 1
  69
  70   dmas:
  71     items:
  72       - description: RX DMA Channel
  73       - description: TX DMA Channel
  74
  75   dma-names:
  76     items:
  77       - const: rx
  78       - const: tx
  79
  80 dependencies:
  81   dmas: [ dma-names ]
  82
  83 required:
  84   - compatible
  85   - reg
  86   - interrupts
  87
  88 allOf:
  89   - $ref: /schemas/i2c/i2c-controller.yaml#
  90   - if:
  91       properties:
  92         compatible:
  93           contains:
  94             enum:
  95               - allwinner,sun4i-a10-i2c
  96               - allwinner,sun6i-a31-i2c
  97
  98     then:
  99       required:
 100         - clocks
 101
 102   - if:
 103       properties:
 104         compatible:
 105           contains:
 106             const: allwinner,sun6i-a31-i2c
 107
 108     then:
 109       required:
 110         - resets
 111
 112 unevaluatedProperties: false
 113
 114 examples:
 115   - |
 116     i2c@11000 {
 117         compatible = "marvell,mv64xxx-i2c";
 118         reg = <0x11000 0x20>;
 119         interrupts = <29>;
 120         clock-frequency = <100000>;
 121     };
 122
 123   - |
 124     i2c@11000 {
 125         compatible = "marvell,mv78230-i2c";
 126         reg = <0x11000 0x100>;
 127         interrupts = <29>;
 128         clock-frequency = <100000>;
 129     };
 130
 131   - |
 132     i2c@701000 {
 133         compatible = "marvell,mv78230-i2c";
 134         reg = <0x701000 0x20>;
 135         interrupts = <29>;
 136         clock-frequency = <100000>;
 137         clock-names = "core", "reg";
 138         clocks = <&core_clock>, <&reg_clock>;
 139     };
 140
 141 ...