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Diffstat (limited to 'Documentation/devicetree/bindings/i2c/samsung-i2c.txt')
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diff --git a/Documentation/devicetree/bindings/i2c/samsung-i2c.txt b/Documentation/devicetree/bindings/i2c/samsung-i2c.txt new file mode 100644 index 000000000000..38832c712919 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/samsung-i2c.txt | |||
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1 | * Samsung's I2C controller | ||
2 | |||
3 | The Samsung's I2C controller is used to interface with I2C devices. | ||
4 | |||
5 | Required 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 | |||
16 | Optional 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 | |||
22 | Example: | ||
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 | }; | ||