Re: [PATCH v6 0/5] Support EFI partition on NVIDIA Tegra devices

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On Sat, Aug 21, 2021 at 08:27:15PM +0300, Dmitry Osipenko wrote:
> 21.08.2021 01:41, Michał Mirosław пишет:
> > On Thu, Aug 19, 2021 at 01:19:15AM +0300, Dmitry Osipenko wrote:
> >> This series adds the most minimal EFI partition support for NVIDIA Tegra
> >> consumer devices, like Android tablets and game consoles, making theirs
> >> eMMC accessible out-of-the-box using downstream bootloader and mainline
> >> Linux kernel.  eMMC now works on Acer A500 tablet and Ouya game console
> >> that are already well supported in mainline and internal storage is the
> >> only biggest thing left to support.
> > [...]
> > 
> > Could we provide the GPT sector via DT? As I understand this is for
> > non-removable eMMC storage. It would remove the need for a cap bit and
> > hardcoded calculations instead just checking if DT node of the controller
> > contains a magic entry with a number.
> 
> The same device model usually comes in different flavors that have a
> different eMMC unit and size. So no, it can't be hardcoded in DT.

I see. I was thinking how to avoid of going the whole way and creating
another controller capability (since this is going to be core code) -
could this workaround be enabled just by a boolean DT property at
controller's node instead? Or do we expect non-DT platforms to be
similarly broken?

Best Regards
Michał Mirosław



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