I want to add support MMIO UART support on OS.
I checked the file pnp_uart.asl.
For IO UART, a device with EisaId("PNP0501") is added into DSDT, the windows can
detect the COM port in device manager.
I am wondering if MMIO UART also have that convinient feature.
Or I need to build a driver for each OS?
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