Re: [PATCH] drm/panfrost: Ignore core_mask for poweroff and sync interrupts

[AngeloGioacchino Del Regno]

Il 23/11/23 11:39, Krzysztof Kozlowski ha scritto:
> On 23/11/2023 10:53, AngeloGioacchino Del Regno wrote:
> > Some SoCs may be equipped with a GPU containing two core groups
> > and this is exactly the case of Samsung's Exynos 5422 featuring
> > an ARM Mali-T628 MP6 GPU: the support for this GPU in Panfrost
> > is partial, as this driver currently supports using only one
> > core group and that's reflected on all parts of it, including
> > the power on (and power off, previously to this patch) function.
> >
> > The issue with this is that even though executing the soft reset
> > operation should power off all cores unconditionally, on at least
> > one platform we're seeing a crash that seems to be happening due
> > to an interrupt firing which may be because we are calling power
> > transition only on the first core group, leaving the second one
> > unchanged, or because ISR execution was pending before entering
> > the panfrost_gpu_power_off() function and executed after powering
> > off the GPU cores, or all of the above.
>
> Does not apply - I tried next 20231117/21/22/23.

Sorry about that, I'll send a v2 soon.

Thanks,
Angelo

> Best regards,
> Krzysztof
>
> _______________________________________________
> Kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxx
> To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxx