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




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Based on kernel version 4.9. Page generated on 2016-12-21 14:30 EST.

1	I2C for R-Car platforms
2	
3	Required properties:
4	- compatible: Must be one of
5		"renesas,i2c-rcar"
6		"renesas,i2c-r8a7778"
7		"renesas,i2c-r8a7779"
8		"renesas,i2c-r8a7790"
9		"renesas,i2c-r8a7791"
10		"renesas,i2c-r8a7792"
11		"renesas,i2c-r8a7793"
12		"renesas,i2c-r8a7794"
13		"renesas,i2c-r8a7795"
14		"renesas,i2c-r8a7796"
15	- reg: physical base address of the controller and length of memory mapped
16	  region.
17	- interrupts: interrupt specifier.
18	
19	Optional properties:
20	- clock-frequency: desired I2C bus clock frequency in Hz. The absence of this
21	  property indicates the default frequency 100 kHz.
22	- clocks: clock specifier.
23	- dmas: Must contain a list of two references to DMA specifiers, one for
24	  transmission, and one for reception.
25	- dma-names: Must contain a list of two DMA names, "tx" and "rx".
26	
27	- i2c-scl-falling-time-ns: see i2c.txt
28	- i2c-scl-internal-delay-ns: see i2c.txt
29	- i2c-scl-rising-time-ns: see i2c.txt
30	
31	Examples :
32	
33	i2c0: i2c@e6508000 {
34		#address-cells = <1>;
35		#size-cells = <0>;
36		compatible = "renesas,i2c-r8a7791";
37		reg = <0 0xe6508000 0 0x40>;
38		interrupts = <0 287 IRQ_TYPE_LEVEL_HIGH>;
39		clocks = <&mstp9_clks R8A7791_CLK_I2C0>;
40		clock-frequency = <400000>;
41	};
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