Vincent Palatin fb8e3f922b stm32: trigger watchdog hard reset immediately ...

When using the watchdog (IWDG) to perform the cold reset, set the Key
register to 'RELOAD' (0xAAAA) rather than 'START' (0xCCCC) to ensure
that the reset is performed immediately rather than at the end of the
current watchdog period (which might be 1 to 5s away).

Replace the Key register special values by their symbolic constants.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BRANCH=none
BUG=b:67081508
TEST=On ZerbleBarn using a STM32H7, run 'ectool reboot_ec cold' and see
the MCU rebooting immediately rather than after 5s.

Change-Id: Ib49c703e3ec973389e4d774eda53f3be7ec4dd2e
Reviewed-on: https://chromium-review.googlesource.com/936764
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>

2018-02-26 09:32:52 -08:00

..

g

g: add CONFIG_USB_CONSOLE_CRC

2018-02-24 01:22:46 -08:00

host

test: store persistence files in RAM

2018-01-31 05:58:03 -08:00

ish

ish i2c: use i2c_ports[] to set bus speed

2017-12-13 00:32:23 -08:00

it83xx

it83xx: espi: workaround for changing PLL

2017-12-12 22:00:36 -08:00

lm4

host_events: Bump up host events and masks to 64-bit

2017-11-21 18:53:35 -08:00

mchp

chip/mchp: Default SPI image script verobse output to disabled

2018-02-09 19:03:26 -08:00

mec1322

system: Allow hibernate to clear AP_OFF flag

2017-12-05 18:00:38 -08:00

npcx

npcx: Set ESPI_MAXFREQ based on FMCLK value

2018-02-20 22:50:02 -08:00

nrf51

cleanup: Remove jtag_pre_init()

2017-09-07 15:01:05 -07:00

stm32

stm32: trigger watchdog hard reset immediately

2018-02-26 09:32:52 -08:00