[Macchiato] Latest EFI hangs writing efivars

[Ard Biesheuvel]

On 19 April 2018 at 18:52, Marcin Wojtas <mw at semihalf.com> wrote:
> Hi Ard,
>
> Hm, my dtb update fixing (or rather working around EFI var access hang) was
> done by adding clk entry to one of i2c nodes, sharing same clock. After that
> I did not observe hang with efibootmgr and 'apt install grub-efi-arm64'.
>
> I think there's a big chance, that the installer does not initialize i2c
> driver... I'll try if clk_ignore_unused helps for the installation hang
> (it's the last stage of it...) if yes, I think more proper fix should be
> applied in the variable driver then.
>

I may have been using an outdated image. I tried to build the latest,
and the resulting image hangs the system before entering UEFI, so I
gave up again.