audk/OptionRomPkg/Bus/Usb/FtdiUsbSerialDxe/ReadMe.txt

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=== FTDI USB SERIAL OVERVIEW ===
This is a bus driver that enables the EfiSerialIoProtocol interface
for FTDI8U232AM based USB-to-Serial adapters.
=== STATUS ===
Serial Input: Functional on real hardware.
Serial Output: Functional on real hardware.
Operating Modes: Currently the user is able to change all operating modes
except timeout and FIFO depth.
The default operating mode is:
Baudrate: 115200
Parity: None
Flow Control: None
Data Bits: 8
Stop Bits: 1
Notes:
Data Bits setting of 6,7,8 can not be combined with a Stop Bits setting of 1.5
At baudrates less than 9600 some of the characters may be transmitted incorrectly.
=== COMPATIBILITY ===
Tested with:
An FTDI8U232AM based USB-To-Serial adapter, the UEFI Shell, and the SerialTest application
using a PuTTY Terminal
See CompatibleDevices.txt for a list of devices which have been confirmed to work with this
driver.