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i2c-s3c2410: Add device tree support
Add device tree probe support for Samsung's s3c2410 i2c driver. Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Ben Dooks
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Oct 29, 2011
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* Samsung's I2C controller | ||
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The Samsung's I2C controller is used to interface with I2C devices. | ||
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Required properties: | ||
- compatible: value should be either of the following. | ||
(a) "samsung, s3c2410-i2c", for i2c compatible with s3c2410 i2c. | ||
(b) "samsung, s3c2440-i2c", for i2c compatible with s3c2440 i2c. | ||
- reg: physical base address of the controller and length of memory mapped | ||
region. | ||
- interrupts: interrupt number to the cpu. | ||
- samsung,i2c-sda-delay: Delay (in ns) applied to data line (SDA) edges. | ||
- gpios: The order of the gpios should be the following: <SDA, SCL>. | ||
The gpio specifier depends on the gpio controller. | ||
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Optional properties: | ||
- samsung,i2c-slave-addr: Slave address in multi-master enviroment. If not | ||
specified, default value is 0. | ||
- samsung,i2c-max-bus-freq: Desired frequency in Hz of the bus. If not | ||
specified, the default value in Hz is 100000. | ||
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Example: | ||
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i2c@13870000 { | ||
compatible = "samsung,s3c2440-i2c"; | ||
reg = <0x13870000 0x100>; | ||
interrupts = <345>; | ||
samsung,i2c-sda-delay = <100>; | ||
samsung,i2c-max-bus-freq = <100000>; | ||
gpios = <&gpd1 2 0 /* SDA */ | ||
&gpd1 3 0 /* SCL */>; | ||
#address-cells = <1>; | ||
#size-cells = <0>; | ||
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wm8994@1a { | ||
compatible = "wlf,wm8994"; | ||
reg = <0x1a>; | ||
}; | ||
}; |
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