summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
blob: ea406eb20fa5ad117b3590cd88c6f1fa13253c2a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
I2C for R-Car platforms

Required properties:
- compatible: Must be one of
	"renesas,i2c-rcar"
	"renesas,i2c-r8a7778"
	"renesas,i2c-r8a7779"
	"renesas,i2c-r8a7790"
	"renesas,i2c-r8a7791"
	"renesas,i2c-r8a7792"
	"renesas,i2c-r8a7793"
	"renesas,i2c-r8a7794"
	"renesas,i2c-r8a7795"
- reg: physical base address of the controller and length of memory mapped
  region.
- interrupts: interrupt specifier.

Optional properties:
- clock-frequency: desired I2C bus clock frequency in Hz. The absence of this
  propoerty indicates the default frequency 100 kHz.
- clocks: clock specifier.

Examples :

i2c0: i2c@e6508000 {
	#address-cells = <1>;
	#size-cells = <0>;
	compatible = "renesas,i2c-r8a7791";
	reg = <0 0xe6508000 0 0x40>;
	interrupts = <0 287 IRQ_TYPE_LEVEL_HIGH>;
	clocks = <&mstp9_clks R8A7791_CLK_I2C0>;
	clock-frequency = <400000>;
};