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Documentation / devicetree / bindings / i2c / i2c-mt6577.txt


Based on kernel version 4.10.8. Page generated on 2017-04-01 14:43 EST.

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	      (a) "mediatek,mt6577-i2c", for i2c compatible with mt6577 i2c.
8	      (b) "mediatek,mt6589-i2c", for i2c compatible with mt6589 i2c.
9	      (c) "mediatek,mt8127-i2c", for i2c compatible with mt8127 i2c.
10	      (d) "mediatek,mt8135-i2c", for i2c compatible with mt8135 i2c.
11	      (e) "mediatek,mt8173-i2c", for i2c compatible with mt8173 i2c.
12	  - reg: physical base address of the controller and dma base, length of memory
13	    mapped region.
14	  - interrupts: interrupt number to the cpu.
15	  - clock-div: the fixed value for frequency divider of clock source in i2c
16	    module. Each IC may be different.
17	  - clocks: clock name from clock manager
18	  - clock-names: Must include "main" and "dma", if enable have-pmic need include
19	    "pmic" extra.
20	
21	Optional properties:
22	  - clock-frequency: Frequency in Hz of the bus when transfer, the default value
23	    is 100000.
24	  - mediatek,have-pmic: platform can control i2c form special pmic side.
25	    Only mt6589 and mt8135 support this feature.
26	  - mediatek,use-push-pull: IO config use push-pull mode.
27	
28	Example:
29	
30		i2c0: i2c@1100d000 {
31				compatible = "mediatek,mt6577-i2c";
32				reg = <0x1100d000 0x70>,
33				      <0x11000300 0x80>;
34				interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
35				clock-frequency = <400000>;
36				mediatek,have-pmic;
37				clock-div = <16>;
38				clocks = <&i2c0_ck>, <&ap_dma_ck>;
39				clock-names = "main", "dma";
40		};
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