TTY: Add MIPS EJTAG Fast Debug Channel TTY driver

[linux-2.6-block.git] / drivers / tty / Kconfig

diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index b24aa010f68c5fd156c8abba916be24a61ed4c2f..39469ca4231ce3435decd03fdaa7b7f396e6f5bb 100644 (file)
--- 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