1* Synopsys DesignWare I2C
2
3Required properties :
4
5 - compatible : should be "snps,designware-i2c"
6 - reg : Offset and length of the register set for the device
7 - interrupts : <IRQ> where IRQ is the interrupt number.
8
9Recommended properties :
10
11 - clock-frequency : desired I2C bus clock frequency in Hz.
12
13Optional properties :
14 - i2c-sda-hold-time-ns : should contain the SDA hold time in nanoseconds.
15   This option is only supported in hardware blocks version 1.11a or newer.
16
17 - i2c-scl-falling-time-ns : should contain the SCL falling time in nanoseconds.
18   This value which is by default 300ns is used to compute the tLOW period.
19
20 - i2c-sda-falling-time-ns : should contain the SDA falling time in nanoseconds.
21   This value which is by default 300ns is used to compute the tHIGH period.
22
23Example :
24
25	i2c@f0000 {
26		#address-cells = <1>;
27		#size-cells = <0>;
28		compatible = "snps,designware-i2c";
29		reg = <0xf0000 0x1000>;
30		interrupts = <11>;
31		clock-frequency = <400000>;
32	};
33
34	i2c@1120000 {
35		#address-cells = <1>;
36		#size-cells = <0>;
37		compatible = "snps,designware-i2c";
38		reg = <0x1120000 0x1000>;
39		interrupt-parent = <&ictl>;
40		interrupts = <12 1>;
41		clock-frequency = <400000>;
42		i2c-sda-hold-time-ns = <300>;
43		i2c-sda-falling-time-ns = <300>;
44		i2c-scl-falling-time-ns = <300>;
45	};
46