xref: /freebsd/sys/contrib/device-tree/Bindings/i2c/i2c-octeon.txt (revision dc318a4ffabcbfa23bb56a33403aad36e6de30af)
1* Two Wire Serial Interface (TWSI) / I2C
2
3- compatible: "cavium,octeon-3860-twsi"
4
5  Compatibility with all cn3XXX, cn5XXX and cn6XXX SOCs.
6
7  or
8
9  compatible: "cavium,octeon-7890-twsi"
10
11  Compatibility with cn78XX SOCs.
12
13- reg: The base address of the TWSI/I2C bus controller register bank.
14
15- #address-cells: Must be <1>.
16
17- #size-cells: Must be <0>.  I2C addresses have no size component.
18
19- interrupts: A single interrupt specifier.
20
21- clock-frequency: The I2C bus clock rate in Hz.
22
23Example:
24	twsi0: i2c@1180000001000 {
25		#address-cells = <1>;
26		#size-cells = <0>;
27		compatible = "cavium,octeon-3860-twsi";
28		reg = <0x11800 0x00001000 0x0 0x200>;
29		interrupts = <0 45>;
30		clock-frequency = <100000>;
31
32		rtc@68 {
33			compatible = "dallas,ds1337";
34			reg = <0x68>;
35		};
36		tmp@4c {
37			compatible = "ti,tmp421";
38			reg = <0x4c>;
39		};
40	};
41