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CONFIG_MIPS_EJTAG_FDC_TTY: MIPS EJTAG Fast Debug Channel TTY

General informations

The Linux kernel configuration item CONFIG_MIPS_EJTAG_FDC_TTY:

Help text

This enables a TTY and console on the MIPS EJTAG Fast Debug Channels, if they are present. This can be useful when working with an EJTAG probe which supports it, to get console output and a login prompt via EJTAG without needing to connect a serial cable.

TTY devices are named e.g. ttyFDC3c2 (for FDC channel 2 of the FDC on CPU3).

The console can be enabled with console=fdc1 (for FDC channel 1 on all CPUs). Do not use the console unless there is a debug probe attached to drain the FDC TX FIFO.

If unsure, say N.

Hardware

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