[PATCH v4] watchdog: stm32_iwdg: Add pretimeout support

[Marek Vasut]

On 6/23/24 8:18 PM, Marek Vasut wrote:
> On 4/15/24 3:48 PM, Marek Vasut wrote:
>> The STM32MP15xx IWDG adds registers which permit this IP to generate
>> pretimeout interrupt. This interrupt can also be used to wake the CPU
>> from suspend. Implement support for generating this interrupt and let
>> userspace configure the pretimeout. In case the pretimeout is not
>> configured by user, set pretimeout to 3/4 of the WDT timeout cycle.
>>
>> Reviewed-by: Clément Le Goffic <clement.legoffic at foss.st.com>
>> Tested-by: Clément Le Goffic <clement.legoffic at foss.st.com>
>> Signed-off-by: Marek Vasut <marex at denx.de>
>> ---
>> Cc: Alexandre Torgue <alexandre.torgue at foss.st.com>
>> Cc: Guenter Roeck <linux at roeck-us.net>
>> Cc: Maxime Coquelin <mcoquelin.stm32 at gmail.com>
>> Cc: Wim Van Sebroeck <wim at linux-watchdog.org>
>> Cc: linux-arm-kernel at lists.infradead.org
>> Cc: linux-stm32 at st-md-mailman.stormreply.com
>> Cc: linux-watchdog at vger.kernel.org
>> ---
>> V2: - Subtract the pretimeout value from timeout value before writing it
>>        into the IWDG pretimeout register, because the watchdog counter
>>        register is counting down, and the pretimeout interrupt triggers
>>        when watchdog counter register matches the pretimeout register
>>        content.
>>      - Set default pretimeout to 3/4 of timeout .
>> V3: - Use dev instead of pdev->dev
>>      - Swap order of ret/return 0
>>      - Split this from the DT changes, which are orthogonal
>>      - Uh, this patch got stuck in upstreaming queue, sorry
>> V4: - Update commit message to match V2 default pretimeout to 3/4
>>      - Add RB/TB from Clément
> 
> Hi,
> 
> Are there still any open topics with this patch ?

Anything ?