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

Frieder Schrempf
2023-02-13T09:18:25Z

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.

Thanks
Frieder