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* Synopsys DesignWare ABP UART
Required properties:
- compatible : "snps,dw-apb-uart"
- reg : offset and length of the register set for the device.
- interrupts : should contain uart interrupt.
- clock-frequency : the input clock frequency for the UART.
Optional properties:
- reg-shift : quantity to shift the register offsets by. If this property is
not present then the register offsets are not shifted.
- reg-io-width : the size (in bytes) of the IO accesses that should be
performed on the device. If this property is not present then single byte
accesses are used.
Example:
uart@80230000 {
compatible = "snps,dw-apb-uart";
reg = <0x80230000 0x100>;
clock-frequency = <3686400>;
interrupts = <10>;
reg-shift = <2>;
reg-io-width = <4>;
};
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