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Diffstat (limited to 'roms/u-boot/doc/README.watchdog')
| -rw-r--r-- | roms/u-boot/doc/README.watchdog | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/roms/u-boot/doc/README.watchdog b/roms/u-boot/doc/README.watchdog new file mode 100644 index 000000000..f23c92391 --- /dev/null +++ b/roms/u-boot/doc/README.watchdog @@ -0,0 +1,33 @@ +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_WDT_AT91 + 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. + TODO: vision2 is removed now, so perhaps this can be changed. + +CONFIG_XILINX_TB_WATCHDOG + Available for Xilinx Axi platforms to service timebase watchdog timer. |