Re: [PATCH v2 05/11] clk: qcom: gcc-msm8998: Mark gpu_cfg_ahb_clk as critical

[Jeffrey Hugo]

On Thu, Jan 14, 2021 at 3:13 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@xxxxxxxxxxxxxx> wrote:
>
> The GPU IOMMU depends on this clock and the hypervisor will crash
> the SoC if this clock gets disabled because the secure contexts
> that have been set on this IOMMU by the bootloader will become
> unaccessible (or they get reset).
> Mark this clock as critical to avoid this issue when the Adreno
> GPU is enabled.
>

You should go review the last attempt to do this -
https://lkml.org/lkml/2019/12/17/881