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1* Samsung's I2C controller
2
3The Samsung's I2C controller is used to interface with I2C devices.
4
5Required properties:
6 - compatible: value should be either of the following.
7 (a) "samsung, s3c2410-i2c", for i2c compatible with s3c2410 i2c.
8 (b) "samsung, s3c2440-i2c", for i2c compatible with s3c2440 i2c.
9 - reg: physical base address of the controller and length of memory mapped
10 region.
11 - interrupts: interrupt number to the cpu.
12 - samsung,i2c-sda-delay: Delay (in ns) applied to data line (SDA) edges.
13 - gpios: The order of the gpios should be the following: <SDA, SCL>.
14 The gpio specifier depends on the gpio controller.
15
16Optional properties:
17 - samsung,i2c-slave-addr: Slave address in multi-master enviroment. If not
18 specified, default value is 0.
19 - samsung,i2c-max-bus-freq: Desired frequency in Hz of the bus. If not
20 specified, the default value in Hz is 100000.
21
22Example:
23
24 i2c@13870000 {
25 compatible = "samsung,s3c2440-i2c";
26 reg = <0x13870000 0x100>;
27 interrupts = <345>;
28 samsung,i2c-sda-delay = <100>;
29 samsung,i2c-max-bus-freq = <100000>;
30 gpios = <&gpd1 2 0 /* SDA */
31 &gpd1 3 0 /* SCL */>;
32 #address-cells = <1>;
33 #size-cells = <0>;
34
35 wm8994@1a {
36 compatible = "wlf,wm8994";
37 reg = <0x1a>;
38 };
39 };