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-rw-r--r--drivers/tty/Kconfig18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index b24aa010f68c..39469ca4231c 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -419,4 +419,22 @@ config DA_CONSOLE
help
This enables a console on a Dash channel.
+config MIPS_EJTAG_FDC_TTY
+ bool "MIPS EJTAG Fast Debug Channel TTY"
+ depends on MIPS_CDMM
+ help
+ 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.
+
endif # TTY