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
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