Re: [PATCH 3/4] mfd: max77620: override PSCI poweroff handler on Pixel C

[Diogo Ivo]

On 5/21/26 09:52, Thierry Reding wrote:
> On Thu, May 14, 2026 at 04:47:21PM +0200, Diogo Ivo wrote:
> > On Pixel C, shutdown must be handled by the MAX77620 PMIC rather
> > than the PSCI SYSTEM_OFF call, whose firmware implementation is:
> >
> > __dead2 void tegra_system_off(void)
> > {
> >          ERROR("Tegra System Off: operation not handled.\n");
> >          panic();
> > }
>
> Ugh... sounds very familiar. We have similar stub implementations on
> Jetson TX1 and/or Nano, if I remember correctly. Luckily newer platforms
> seem to have proper implementations for these.

Yes, on my TX1 I was encountering the same problem. However in that case
is it possible to update the firmware with a proper implementation?

> Thanks for doing this. I might want to take inspiration from this for
> these older Jetson platforms.

My pleasure!

Diogo

> Thierry