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




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Based on kernel version 4.7.2. Page generated on 2016-08-22 22:41 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	- reg: physical base address of the controller and length of memory mapped
15	  region.
16	- interrupts: interrupt specifier.
17	
18	Optional properties:
19	- clock-frequency: desired I2C bus clock frequency in Hz. The absence of this
20	  property indicates the default frequency 100 kHz.
21	- clocks: clock specifier.
22	- dmas: Must contain a list of two references to DMA specifiers, one for
23	  transmission, and one for reception.
24	- dma-names: Must contain a list of two DMA names, "tx" and "rx".
25	
26	- i2c-scl-falling-time-ns: see i2c.txt
27	- i2c-scl-internal-delay-ns: see i2c.txt
28	- i2c-scl-rising-time-ns: see i2c.txt
29	
30	Examples :
31	
32	i2c0: i2c@e6508000 {
33		#address-cells = <1>;
34		#size-cells = <0>;
35		compatible = "renesas,i2c-r8a7791";
36		reg = <0 0xe6508000 0 0x40>;
37		interrupts = <0 287 IRQ_TYPE_LEVEL_HIGH>;
38		clocks = <&mstp9_clks R8A7791_CLK_I2C0>;
39		clock-frequency = <400000>;
40	};
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