i2c-mt65xx.txt

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    1 * MediaTek's I2C controller
    2 
    3 The MediaTek's I2C controller is used to interface with I2C devices.
    4 
    5 Required properties:
    6   - compatible: value should be either of the following.
    7       "mediatek,mt2701-i2c", "mediatek,mt6577-i2c": for MediaTek MT2701
    8       "mediatek,mt2712-i2c": for MediaTek MT2712
    9       "mediatek,mt6577-i2c": for MediaTek MT6577
   10       "mediatek,mt6589-i2c": for MediaTek MT6589
   11       "mediatek,mt6797-i2c", "mediatek,mt6577-i2c": for MediaTek MT6797
   12       "mediatek,mt7622-i2c": for MediaTek MT7622
   13       "mediatek,mt7623-i2c", "mediatek,mt6577-i2c": for MediaTek MT7623
   14       "mediatek,mt7629-i2c", "mediatek,mt2712-i2c": for MediaTek MT7629
   15       "mediatek,mt8168-i2c": for MediaTek MT8168
   16       "mediatek,mt8173-i2c": for MediaTek MT8173
   17       "mediatek,mt8183-i2c": for MediaTek MT8183
   18       "mediatek,mt8186-i2c": for MediaTek MT8186
   19       "mediatek,mt8192-i2c": for MediaTek MT8192
   20       "mediatek,mt8195-i2c", "mediatek,mt8192-i2c": for MediaTek MT8195
   21       "mediatek,mt8516-i2c", "mediatek,mt2712-i2c": for MediaTek MT8516
   22   - reg: physical base address of the controller and dma base, length of memory
   23     mapped region.
   24   - interrupts: interrupt number to the cpu.
   25   - clock-div: the fixed value for frequency divider of clock source in i2c
   26     module. Each IC may be different.
   27   - clocks: clock name from clock manager
   28   - clock-names: Must include "main" and "dma", "arb" is for multi-master that
   29     one bus has more than two i2c controllers, if enable have-pmic need include
   30     "pmic" extra.
   31 
   32 Optional properties:
   33   - clock-frequency: Frequency in Hz of the bus when transfer, the default value
   34     is 100000.
   35   - mediatek,have-pmic: platform can control i2c form special pmic side.
   36     Only mt6589 and mt8135 support this feature.
   37   - mediatek,use-push-pull: IO config use push-pull mode.
   38   - vbus-supply: phandle to the regulator that provides power to SCL/SDA.
   39 
   40 Example:
   41 
   42         i2c0: i2c@1100d000 {
   43                         compatible = "mediatek,mt6577-i2c";
   44                         reg = <0x1100d000 0x70>,
   45                               <0x11000300 0x80>;
   46                         interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
   47                         clock-frequency = <400000>;
   48                         mediatek,have-pmic;
   49                         clock-div = <16>;
   50                         clocks = <&i2c0_ck>, <&ap_dma_ck>;
   51                         clock-names = "main", "dma";
   52         };
   53

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