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 Device Tree Bindings
   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           - const: allwinner,sun8i-a23-i2c
  22           - const: allwinner,sun6i-a31-i2c
  23       - items:
  24           - const: allwinner,sun8i-a83t-i2c
  25           - const: allwinner,sun6i-a31-i2c
  26       - items:
  27           - const: allwinner,sun50i-a64-i2c
  28           - const: allwinner,sun6i-a31-i2c
  29       - items:
  30           - const: allwinner,sun50i-h6-i2c
  31           - const: allwinner,sun6i-a31-i2c
  32
  33       - const: marvell,mv64xxx-i2c
  34       - const: marvell,mv78230-i2c
  35       - const: marvell,mv78230-a0-i2c
  36
  37     description:
  38       Only use "marvell,mv78230-a0-i2c" for a very rare, initial
  39       version of the SoC which had broken offload support. Linux
  40       auto-detects this and sets it appropriately.
  41
  42   reg:
  43     maxItems: 1
  44
  45   interrupts:
  46     maxItems: 1
  47
  48   clocks:
  49     minItems: 1
  50     maxItems: 2
  51     items:
  52       - description: Reference clock for the I2C bus
  53       - description: Bus clock (Only for Armada 7K/8K)
  54
  55   clock-names:
  56     minItems: 1
  57     maxItems: 2
  58     items:
  59       - const: core
  60       - const: reg
  61     description:
  62       Mandatory if two clocks are used (only for Armada 7k and 8k).
  63
  64   resets:
  65     maxItems: 1
  66
  67 required:
  68   - compatible
  69   - reg
  70   - interrupts
  71
  72 allOf:
  73   - $ref: /schemas/i2c/i2c-controller.yaml#
  74   - if:
  75       properties:
  76         compatible:
  77           contains:
  78             enum:
  79               - allwinner,sun4i-a10-i2c
  80               - allwinner,sun6i-a31-i2c
  81
  82     then:
  83       required:
  84         - clocks
  85
  86   - if:
  87       properties:
  88         compatible:
  89           contains:
  90             const: allwinner,sun6i-a31-i2c
  91
  92     then:
  93       required:
  94         - resets
  95
  96 # FIXME: We should set it, but it would report all the generic
  97 # properties as additional properties.
  98 # additionalProperties: false
  99
 100 examples:
 101   - |
 102     i2c@11000 {
 103         compatible = "marvell,mv64xxx-i2c";
 104         reg = <0x11000 0x20>;
 105         interrupts = <29>;
 106         clock-frequency = <100000>;
 107     };
 108
 109   - |
 110     i2c@11000 {
 111         compatible = "marvell,mv78230-i2c";
 112         reg = <0x11000 0x100>;
 113         interrupts = <29>;
 114         clock-frequency = <100000>;
 115     };
 116
 117   - |
 118     i2c@701000 {
 119         compatible = "marvell,mv78230-i2c";
 120         reg = <0x701000 0x20>;
 121         interrupts = <29>;
 122         clock-frequency = <100000>;
 123         clock-names = "core", "reg";
 124         clocks = <&core_clock>, <&reg_clock>;
 125     };
 126
 127 ...