1Device tree configuration for Renesas IIC (sh_mobile) driver
2
3Required properties:
4- compatible      :
5			- "renesas,iic-r8a73a4" (R-Mobile APE6)
6			- "renesas,iic-r8a7740" (R-Mobile A1)
7			- "renesas,iic-r8a7742" (RZ/G1H)
8			- "renesas,iic-r8a7743" (RZ/G1M)
9			- "renesas,iic-r8a7744" (RZ/G1N)
10			- "renesas,iic-r8a7745" (RZ/G1E)
11			- "renesas,iic-r8a774a1" (RZ/G2M)
12			- "renesas,iic-r8a774b1" (RZ/G2N)
13			- "renesas,iic-r8a774c0" (RZ/G2E)
14			- "renesas,iic-r8a774e1" (RZ/G2H)
15			- "renesas,iic-r8a7790" (R-Car H2)
16			- "renesas,iic-r8a7791" (R-Car M2-W)
17			- "renesas,iic-r8a7792" (R-Car V2H)
18			- "renesas,iic-r8a7793" (R-Car M2-N)
19			- "renesas,iic-r8a7794" (R-Car E2)
20			- "renesas,iic-r8a7795" (R-Car H3)
21			- "renesas,iic-r8a7796" (R-Car M3-W)
22			- "renesas,iic-r8a77961" (R-Car M3-W+)
23			- "renesas,iic-r8a77965" (R-Car M3-N)
24			- "renesas,iic-r8a77990" (R-Car E3)
25			- "renesas,iic-sh73a0" (SH-Mobile AG5)
26			- "renesas,rcar-gen2-iic" (generic R-Car Gen2 or RZ/G1
27							compatible device)
28			- "renesas,rcar-gen3-iic" (generic R-Car Gen3 or RZ/G2
29							compatible device)
30			- "renesas,rmobile-iic" (generic device)
31
32			When compatible with a generic R-Car version, nodes
33			must list the SoC-specific version corresponding to
34			the platform first followed by the generic R-Car
35			version.
36
37			When compatible with "renesas,rmobile-iic" it should
38			be the last compatibility string listed.
39
40			The r8a77990 (R-Car E3) and r8a774c0 (RZ/G2E)
41			controllers are not considered compatible with
42			"renesas,rcar-gen3-iic" or "renesas,rmobile-iic"
43			due to the absence of automatic transmission registers.
44
45- reg             : address start and address range size of device
46- interrupts      : interrupt of device
47- clocks          : clock for device
48- #address-cells  : should be <1>
49- #size-cells     : should be <0>
50
51Optional properties:
52- clock-frequency : frequency of bus clock in Hz. Default 100kHz if unset.
53- dmas            : Must contain a list of two references to DMA
54		    specifiers, one for transmission, and one for
55		    reception.
56- dma-names       : Must contain a list of two DMA names, "tx" and "rx".
57
58
59Pinctrl properties might be needed, too. See there.
60
61Example:
62
63	iic0: i2c@e6500000 {
64		compatible = "renesas,iic-r8a7790", "renesas,rcar-gen2-iic",
65			     "renesas,rmobile-iic";
66		reg = <0 0xe6500000 0 0x425>;
67		interrupts = <0 174 IRQ_TYPE_LEVEL_HIGH>;
68		clocks = <&mstp3_clks R8A7790_CLK_IIC0>;
69		clock-frequency = <400000>;
70		#address-cells = <1>;
71		#size-cells = <0>;
72	};
73