Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / doc / README.watchdog

diff --git a/qemu/roms/u-boot/doc/README.watchdog b/qemu/roms/u-boot/doc/README.watchdog
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+Watchdog driver general info
+
+CONFIG_HW_WATCHDOG
+       This enables hw_watchdog_reset to be called during various loops,
+       including waiting for a character on a serial port. But it
+       does not also call hw_watchdog_init. Boards which want this
+       enabled must call this function in their board file. This split
+       is useful because some rom's enable the watchdog when downloading
+       new code, so it must be serviced, but the board would rather it
+       was off. And, it cannot always be turned off once on.
+
+CONFIG_WATCHDOG_TIMEOUT_MSECS
+       Can be used to change the timeout for i.mx31/35/5x/6x.
+       If not given, will default to maximum timeout. This would
+       be 128000 msec for i.mx31/35/5x/6x.
+
+CONFIG_AT91SAM9_WATCHDOG
+       Available for AT91SAM9 to service the watchdog.
+
+CONFIG_FTWDT010_WATCHDOG
+       Available for FTWDT010 to service the watchdog.
+
+CONFIG_FTWDT010_HW_TIMEOUT
+       Can be used to change the timeout for FTWDT010.
+
+CONFIG_IMX_WATCHDOG
+       Available for i.mx31/35/5x/6x to service the watchdog. This is not
+       automatically set because some boards (vision2) still need to define
+       their own hw_watchdog_reset routine.
+
+CONFIG_XILINX_TB_WATCHDOG
+       Available for Xilinx Axi platforms to service timebase watchdog timer.
+
+CONFIG_BFIN_WATCHDOG
+       Available for bf5xx and bf6xx to service the watchdog.