[PATCH v6 0/8] Fix RK3588 power domain problems

[Ulf Hansson]

On Thu, 20 Feb 2025 at 19:58, Sebastian Reichel
<sebastian.reichel at collabora.com> wrote:
>
> Hi,
>
> I got a report, that the Linux kernel crashes on Rock 5B when the panthor
> driver is loaded late after booting. The crash starts with the following
> shortened error print:
>
> rockchip-pm-domain fd8d8000.power-management:power-controller: failed to set domain 'gpu', val=0
> rockchip-pm-domain fd8d8000.power-management:power-controller: failed to get ack on domain 'gpu', val=0xa9fff
> SError Interrupt on CPU4, code 0x00000000be000411 -- SError
>
> This series first does some cleanups in the Rockchip power domain
> driver and changes the driver, so that it no longer tries to continue
> when it fails to enable a domain. This gets rid of the SError interrupt
> and long backtraces. But the kernel still hangs when it fails to enable
> a power domain. I have not done further analysis to check if that can
> be avoided.
>
> Last but not least this provides a fix for the GPU power domain failing
> to get enabled - after some testing from my side it seems to require the
> GPU voltage supply to be enabled.
>
> This introduces devm_of_regulator_get without the _optional suffix, since
> that is more sensible for the Rockchip usecase. Longer explanation can be
> seen in patch 6, which adds the handling to the Rockchip driver. My merge
> suggestion would be that Mark provides an immutable branch to Ulf.
>
> The last patch, which updates the RK3588 board files should cover all RK3588
> boards that are currently in Heiko's for-next branch. Any board missing the
> update will behave as before, so it is perfectly fine not to update all DT
> files at once (in case I missed any).
>
> This is based on Heiko's for-next branch. Also it's probably worth mentioning,
> that mesa CI is carrying this patchset for quite some time now.

[...]

I have pulled patch 1 from Mark's tree and applied patch 2 -> patch 7 for next.

Note that, patch6 (the DT patch) is also available on the immutable dt branch.

Thanks and kind regards
Uffe