08 Jun, 2017
4 commits
-
For i.MX7ULP wdog, when we want to unlock the wdog with 16bit unlock command,
the two unlock command sequence must be write to WDOG_CNT register within 16 bus
clocks, otherwise, system may be reset unexpected. As writel include memory barrier,
if we use writel to send the unlock command, it may take more time than 16 bus clock,
so we should use writel_relaxed to write the unlock command to the CNT register.Signed-off-by: Bai Ping
-
Add system reboot for i.MX7ULP. As there is no other way to reboot the
system, so use wdog restart handler to trigger the system reboot.Signed-off-by: Bai Ping
-
When resuming from VLLS mode, the wdog will be reset, the first we configure
the wdog, an initial timeout value should be write into the TOVAL register,
otherwise, the wdog will not be initialized successfully.Signed-off-by: Bai Ping
-
Add watchdog driver for i.MX7ULP.
Signed-off-by: Bai Ping
