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