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49 lines
1.9 KiB
49 lines
1.9 KiB
* MediaTek's I2C controller |
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The MediaTek's I2C controller is used to interface with I2C devices. |
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Required properties: |
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- compatible: value should be either of the following. |
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"mediatek,mt2701-i2c", "mediatek,mt6577-i2c": for MediaTek MT2701 |
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"mediatek,mt2712-i2c": for MediaTek MT2712 |
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"mediatek,mt6577-i2c": for MediaTek MT6577 |
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"mediatek,mt6589-i2c": for MediaTek MT6589 |
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"mediatek,mt6797-i2c", "mediatek,mt6577-i2c": for MediaTek MT6797 |
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"mediatek,mt7622-i2c": for MediaTek MT7622 |
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"mediatek,mt7623-i2c", "mediatek,mt6577-i2c": for MediaTek MT7623 |
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"mediatek,mt7629-i2c", "mediatek,mt2712-i2c": for MediaTek MT7629 |
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"mediatek,mt8173-i2c": for MediaTek MT8173 |
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"mediatek,mt8183-i2c": for MediaTek MT8183 |
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"mediatek,mt8192-i2c": for MediaTek MT8192 |
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"mediatek,mt8516-i2c", "mediatek,mt2712-i2c": for MediaTek MT8516 |
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- reg: physical base address of the controller and dma base, length of memory |
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mapped region. |
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- interrupts: interrupt number to the cpu. |
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- clock-div: the fixed value for frequency divider of clock source in i2c |
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module. Each IC may be different. |
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- clocks: clock name from clock manager |
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- clock-names: Must include "main" and "dma", "arb" is for multi-master that |
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one bus has more than two i2c controllers, if enable have-pmic need include |
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"pmic" extra. |
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Optional properties: |
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- clock-frequency: Frequency in Hz of the bus when transfer, the default value |
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is 100000. |
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- mediatek,have-pmic: platform can control i2c form special pmic side. |
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Only mt6589 and mt8135 support this feature. |
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- mediatek,use-push-pull: IO config use push-pull mode. |
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Example: |
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i2c0: i2c@1100d000 { |
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compatible = "mediatek,mt6577-i2c"; |
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reg = <0x1100d000 0x70>, |
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<0x11000300 0x80>; |
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interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>; |
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clock-frequency = <400000>; |
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mediatek,have-pmic; |
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clock-div = <16>; |
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clocks = <&i2c0_ck>, <&ap_dma_ck>; |
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clock-names = "main", "dma"; |
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}; |
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