diff options
author | Wolfram Sang <wsa@the-dreams.de> | 2019-05-03 15:20:04 +0200 |
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committer | Wolfram Sang <wsa@the-dreams.de> | 2019-05-03 15:20:58 +0200 |
commit | d00afd5ede1c29a6dc59be2d7fb7d6ef28eb85c5 (patch) | |
tree | e194b1968e54380a6654abf7d3a037ca0a010280 /Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt | |
parent | 9a51b86a61214a297cdfc1bb705b7267f9455ae6 (diff) | |
parent | d5984d2a312144bedccf32aea2298f8df05bb617 (diff) |
Merge branch 'i2c-mux/for-next' of https://github.com/peda-r/i2c-mux into i2c/for-5.2
Mainly some pca954x work, i.e. removal of unused platform data support
and added support for sysfs interface for manipulating/examining the
idle state. And then a mechanical cocci-style patch.
Diffstat (limited to 'Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt')
-rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt new file mode 100644 index 000000000000..68f6d73a8b73 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt @@ -0,0 +1,47 @@ +* MediaTek's I2C controller + +The MediaTek's I2C controller is used to interface with I2C devices. + +Required properties: + - compatible: value should be either of the following. + "mediatek,mt2701-i2c", "mediatek,mt6577-i2c": for MediaTek MT2701 + "mediatek,mt2712-i2c": for MediaTek MT2712 + "mediatek,mt6577-i2c": for MediaTek MT6577 + "mediatek,mt6589-i2c": for MediaTek MT6589 + "mediatek,mt7622-i2c": for MediaTek MT7622 + "mediatek,mt7623-i2c", "mediatek,mt6577-i2c": for MediaTek MT7623 + "mediatek,mt7629-i2c", "mediatek,mt2712-i2c": for MediaTek MT7629 + "mediatek,mt8173-i2c": for MediaTek MT8173 + "mediatek,mt8183-i2c": for MediaTek MT8183 + "mediatek,mt8516-i2c", "mediatek,mt2712-i2c": for MediaTek MT8516 + - reg: physical base address of the controller and dma base, length of memory + mapped region. + - interrupts: interrupt number to the cpu. + - clock-div: the fixed value for frequency divider of clock source in i2c + module. Each IC may be different. + - clocks: clock name from clock manager + - clock-names: Must include "main" and "dma", "arb" is for multi-master that + one bus has more than two i2c controllers, if enable have-pmic need include + "pmic" extra. + +Optional properties: + - clock-frequency: Frequency in Hz of the bus when transfer, the default value + is 100000. + - mediatek,have-pmic: platform can control i2c form special pmic side. + Only mt6589 and mt8135 support this feature. + - mediatek,use-push-pull: IO config use push-pull mode. + +Example: + + i2c0: i2c@1100d000 { + compatible = "mediatek,mt6577-i2c"; + reg = <0x1100d000 0x70>, + <0x11000300 0x80>; + interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>; + clock-frequency = <400000>; + mediatek,have-pmic; + clock-div = <16>; + clocks = <&i2c0_ck>, <&ap_dma_ck>; + clock-names = "main", "dma"; + }; + |