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- Device tree configuration for i2c-ocores
- Required properties:
- - compatible : "opencores,i2c-ocores" or "aeroflexgaisler,i2cmst"
- - reg : bus address start and address range size of device
- - interrupts : interrupt number
- - clock-frequency : frequency of bus clock in Hz
- - #address-cells : should be <1>
- - #size-cells : should be <0>
- Optional properties:
- - reg-shift : device register offsets are shifted by this value
- - reg-io-width : io register width in bytes (1, 2 or 4)
- - regstep : deprecated, use reg-shift above
- Example:
- i2c0: ocores@a0000000 {
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "opencores,i2c-ocores";
- reg = <0xa0000000 0x8>;
- interrupts = <10>;
- clock-frequency = <20000000>;
- reg-shift = <0>; /* 8 bit registers */
- reg-io-width = <1>; /* 8 bit read/write */
- dummy@60 {
- compatible = "dummy";
- reg = <0x60>;
- };
- };
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