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- * Samsung's I2C controller
- The Samsung's I2C controller is used to interface with I2C devices.
- 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.
- (c) "samsung, s3c2440-hdmiphy-i2c", for s3c2440-like i2c used
- inside HDMIPHY block found on several samsung SoCs
- - 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.
- Optional properties:
- - gpios: The order of the gpios should be the following: <SDA, SCL>.
- The gpio specifier depends on the gpio controller. Required in all
- cases except for "samsung,s3c2440-hdmiphy-i2c" whose input/output
- lines are permanently wired to the respective client
- - 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.
- Example:
- 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>;
- wm8994@1a {
- compatible = "wlf,wm8994";
- reg = <0x1a>;
- };
- };
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