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* Rockchip RK3xxx I2C controller
This driver interfaces with the native I2C controller present in Rockchip
RK3xxx SoCs.
Required properties :
- reg : Offset and length of the register set for the device
- compatible : should be "rockchip,rk3066-i2c", "rockchip,rk3188-i2c" or
"rockchip,rk3288-i2c".
- interrupts : interrupt number
- clocks : parent clock
Required on RK3066, RK3188 :
- rockchip,grf : the phandle of the syscon node for the general register
file (GRF)
- on those SoCs an alias with the correct I2C bus ID (bit offset in the GRF)
is also required.
Optional properties :
- clock-frequency : SCL frequency to use (in Hz). If omitted, 100kHz is used.
Example:
aliases {
i2c0 = &i2c0;
}
i2c0: i2c@2002d000 {
compatible = "rockchip,rk3188-i2c";
reg = <0x2002d000 0x1000>;
interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
#address-cells = <1>;
#size-cells = <0>;
rockchip,grf = <&grf>;
clock-names = "i2c";
clocks = <&cru PCLK_I2C0>;
};
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