RE: [PATCH] mmc: core: Add support for the eMMC RTC feature in mmc_ops

[Avri Altman]

> On Tue, Dec 07, 2021 at 08:28:42AM +0000, Avri Altman wrote:
> >
> > > This patch adds support to set the RTC information in the eMMC
> > > device. This is based on the JEDEC specification.
> > >
> > > There is no way however, to read the RTC time from the device. Hence
> > > we rely on the response of the CMD49 to confirm the completion of
> > > the operation.
> > >
> > > This patch has been tested successfully with the ioctl interface.
> > > This patch has also been tested suceessfully with all the three
> > > RTC_INFO_TYPEs.
> > If this is triggered from user-space via ioctl anyway, Why do we need
> > this command to be implemented in the kernel?
> > Why not just add this to mmc-utils?
> >
> > Thanks,
> > Avri
> As per the spec, B51: Section 6.6.35:
> Providing RTC info may be useful for internal maintainance operations.
> And the host should send it on the following events:
> - power-up
> - wake-up
> - Periodically
> Hence IMO, the Kernel would be the right place of peforming this operation.
But your patch doesn't do that, is it?

Thanks,
Avri