Documentation/devicetree/bindings/i2c/ingenic,i2c.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/i2c/ingenic,i2c.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Ingenic SoCs I2C controller
   8
   9 maintainers:
  10   - Paul Cercueil <paul@crapouillou.net>
  11
  12 allOf:
  13   - $ref: /schemas/i2c/i2c-controller.yaml#
  14
  15 properties:
  16   $nodename:
  17     pattern: "^i2c@[0-9a-f]+$"
  18
  19   compatible:
  20     oneOf:
  21       - enum:
  22           - ingenic,jz4770-i2c
  23           - ingenic,x1000-i2c
  24       - items:
  25           - const: ingenic,jz4780-i2c
  26           - const: ingenic,jz4770-i2c
  27
  28   reg:
  29     maxItems: 1
  30
  31   interrupts:
  32     maxItems: 1
  33
  34   clocks:
  35     maxItems: 1
  36
  37   clock-frequency:
  38     enum: [ 100000, 400000 ]
  39
  40   dmas:
  41     items:
  42       - description: DMA controller phandle and request line for RX
  43       - description: DMA controller phandle and request line for TX
  44
  45   dma-names:
  46     items:
  47       - const: rx
  48       - const: tx
  49
  50 required:
  51   - compatible
  52   - reg
  53   - interrupts
  54   - clocks
  55   - clock-frequency
  56   - dmas
  57   - dma-names
  58
  59 unevaluatedProperties: false
  60
  61 examples:
  62   - |
  63     #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
  64     #include <dt-bindings/dma/jz4780-dma.h>
  65     #include <dt-bindings/interrupt-controller/irq.h>
  66     i2c@10054000 {
  67       compatible = "ingenic,jz4780-i2c", "ingenic,jz4770-i2c";
  68       #address-cells = <1>;
  69       #size-cells = <0>;
  70       reg = <0x10054000 0x1000>;
  71
  72       interrupts = <56 IRQ_TYPE_LEVEL_LOW>;
  73
  74       clocks = <&cgu JZ4780_CLK_SMB4>;
  75       pinctrl-names = "default";
  76       pinctrl-0 = <&pins_i2c4_data>;
  77
  78       dmas = <&dma JZ4780_DMA_SMB4_RX 0xffffffff>,
  79              <&dma JZ4780_DMA_SMB4_TX 0xffffffff>;
  80       dma-names = "rx", "tx";
  81
  82       clock-frequency = <400000>;
  83
  84       rtc@51 {
  85         compatible = "nxp,pcf8563";
  86         reg = <0x51>;
  87
  88         interrupts = <30 IRQ_TYPE_LEVEL_LOW>;
  89       };
  90     };