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universal_payload.rst: Add ClockRate field to serial port info #61

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universal_payload.rst: Add ClockRate field to serial port info #61

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9 changes: 7 additions & 2 deletions source/2_universal_payload.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -1145,6 +1145,7 @@ to payload.
UINT8 RegisterStride;
UINT32 BaudRate;
EFI_PHYSICAL_ADDRESS RegisterBase;
UINT32 ClockRate;
} UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO;

#pragma pack()
Expand All @@ -1153,9 +1154,9 @@ to payload.

``Header``

Header.Revision is 1.
Header.Revision is 2.

Header.Length is 18.
Header.Length is 22.

``UseMmio``

Expand All @@ -1179,6 +1180,10 @@ Set to 0 to use the default baud rate 115200.

Base address of 16550 serial port registers in MMIO or I/O space.

``ClockRate``

The crystal or input frequency to the chip containing the UART.

PCI Root Bridges
%%%%%%%%%%%%%%%%%%%%

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