i2c-mt65xx.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/i2c/i2c-mt65xx.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: MediaTek I2C controller
    8 
    9 description:
   10   This driver interfaces with the native I2C controller present in
   11   various MediaTek SoCs.
   12 
   13 allOf:
   14   - $ref: /schemas/i2c/i2c-controller.yaml#
   15 
   16 maintainers:
   17   - Qii Wang <qii.wang@mediatek.com>
   18 
   19 properties:
   20   compatible:
   21     oneOf:
   22       - const: mediatek,mt2712-i2c
   23       - const: mediatek,mt6577-i2c
   24       - const: mediatek,mt6589-i2c
   25       - const: mediatek,mt7622-i2c
   26       - const: mediatek,mt8168-i2c
   27       - const: mediatek,mt8173-i2c
   28       - const: mediatek,mt8183-i2c
   29       - const: mediatek,mt8186-i2c
   30       - const: mediatek,mt8188-i2c
   31       - const: mediatek,mt8192-i2c
   32       - items:
   33           - enum:
   34               - mediatek,mt7629-i2c
   35               - mediatek,mt8516-i2c
   36           - const: mediatek,mt2712-i2c
   37       - items:
   38           - enum:
   39               - mediatek,mt2701-i2c
   40               - mediatek,mt6797-i2c
   41               - mediatek,mt7623-i2c
   42           - const: mediatek,mt6577-i2c
   43       - items:
   44           - enum:
   45               - mediatek,mt8195-i2c
   46           - const: mediatek,mt8192-i2c
   47 
   48   reg:
   49     items:
   50       - description: Physical base address
   51       - description: DMA base address
   52 
   53   interrupts:
   54     maxItems: 1
   55 
   56   clocks:
   57     minItems: 2
   58     items:
   59       - description: Main clock for I2C bus
   60       - description: Clock for I2C via DMA
   61       - description: Bus arbitrator clock
   62       - description: Clock for I2C from PMIC
   63 
   64   clock-names:
   65     minItems: 2
   66     items:
   67       - const: main
   68       - const: dma
   69       - const: arb
   70       - const: pmic
   71 
   72   clock-div:
   73     $ref: /schemas/types.yaml#/definitions/uint32
   74     description: Frequency divider of clock source in I2C module
   75 
   76   clock-frequency:
   77     default: 100000
   78     description:
   79       SCL frequency to use (in Hz). If omitted, 100kHz is used.
   80 
   81   mediatek,have-pmic:
   82     description: Platform controls I2C from PMIC side
   83     type: boolean
   84 
   85   mediatek,use-push-pull:
   86     description: Use push-pull mode I/O config
   87     type: boolean
   88 
   89   vbus-supply:
   90     description: Phandle to the regulator providing power to SCL/SDA
   91 
   92 required:
   93   - compatible
   94   - reg
   95   - clocks
   96   - clock-names
   97   - clock-div
   98   - interrupts
   99 
  100 unevaluatedProperties: false
  101 
  102 examples:
  103   - |
  104     #include <dt-bindings/interrupt-controller/arm-gic.h>
  105     #include <dt-bindings/interrupt-controller/irq.h>
  106 
  107     i2c0: i2c@1100d000 {
  108       compatible = "mediatek,mt6577-i2c";
  109       reg = <0x1100d000 0x70>, <0x11000300 0x80>;
  110       interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
  111       clocks = <&i2c0_ck>, <&ap_dma_ck>;
  112       clock-names = "main", "dma";
  113       clock-div = <16>;
  114       clock-frequency = <400000>;
  115       mediatek,have-pmic;
  116 
  117       #address-cells = <1>;
  118       #size-cells = <0>;
  119     };

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sys/contrib/device-tree/Bindings/i2c/i2c-mt65xx.yaml