U-boot axi uart-lite driver
U-boot axi uart-lite driver
Introduction
The LogiCORE IP AXI Universal Asynchronous Receiver Transmitter (UART) Lite interface connects to the Advanced Microcontroller Bus Architecture (AMBA) specification’s Advanced eXtensible Interface (AXI) and provides the controller interface for asynchronous serial data transfer. This soft LogiCORE IP core is designed to interface with the AXI4-Lite protocol.
Configuration
CONFIG_XILINX_UARTLITE=y
Device tree
serial@40600000 { clock-frequency = <100000000>; clocks = <&clk_bus_0>; compatible = "xlnx,axi-uartlite-2.0", "xlnx,xps-uartlite-1.00.a"; current-speed = <115200>; device_type = "serial"; port-number = <0>; reg = <0x40600000 0x10000>; };
Test procedure
- None
Features
AXI interface is based on the AXI4-Lite specification
One transmit and one receive channel (full duplex)
16-character transmit and receive FIFOs
Configurable number of data bits (5-8) in a character
Configurable parity bit (odd or even or none)
Configurable baud rate
, multiple selections available,
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