Re: [PATCH 0/7] Enable backup switch mode on RTCs via devicetree

Frieder Schrempf
2023-03-06T13:27:22Z

On 13.02.23 10:18, Frieder Schrempf wrote:
> Hi Alexandre,
>
> On 01.02.23 17:26, Frieder Schrempf wrote:
>> On 01.02.23 17:15, Alexandre Belloni wrote:
>>> Hello,
>>>
>>> You can't do that, this breaks an important use case and it is the
>>> reason why I didn't use device tree in the beginning. What is wrong with
>>> setting BSM from userspace? You will anyway have to set the time and
>>> date from userspace for it to be saved.
>>
>> Ok, I was already afraid there is something I missed. Can you give a
>> short explanation of what use case this would break?
>>
>> There is nothing wrong with setting BSM from userspace. It's just the
>> fact that users expect BSM to be enabled in any case as there is a
>> battery on the board. It is much more effort to ensure that production,
>> user, etc. are aware of an extra step required than to let the kernel
>> deal with it behind the scenes.
>
> Would you mind elaborating on your argument that this would break stuff?
> I currently don't see how an additional optional devicetree property
> would break anything.

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