Re: [Linux-stm32] [PATCH v2 1/1] drivers: watchdog: stm32_iwdg: set WDOG_HW_RUNNING at probe
From: Christophe ROULLIER
Date: Fri Nov 22 2019 - 08:15:42 EST
On 11/22/19 11:28 AM, Ahmad Fatoum wrote:
> Hello Christophe,
> On 11/22/19 9:24 AM, Christophe Roullier wrote:
>> + /*
>> + * In case of CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED is set
>> + * (Means U-Boot/bootloaders leaves the watchdog running)
>> + * When we get here we should make a decision to prevent
>> + * any side effects before user space daemon will take care of it.
>> + * The best option, taking into consideration that there is no
>> + * way to read values back from hardware, is to enforce watchdog
>> + * being run with deterministic values.
> What about the "ONF: Watchdog enable status bit" in the IWDG_SR register?
Thanks Ahmad for your feedback, it is a mistake in our ref manual. This
bit is not present
in our iwdg IP, we will update our documentation accordingly.