NAK: Re: [SRU][OEM-OSP1-B][PATCH 0/1] drm/i915: revert the patch of "set disable_power_well=0 for icl temporarily"

Timo Aaltonen tjaalton at
Wed Aug 21 07:23:18 UTC 2019

On 13.8.2019 13.08, Hui Wang wrote:
> BugLink:
> [Impact]
> Two weeks ago, we sent the patch to set disable_power_well=0, this is
> because we found sometimes the hdmi audio driver printed out the timeout
> errors when accessing the codec. But recently the ODM told us those
> machines had some HW or BIOS issues, we can't reproduce the timeout
> errors on the new machines anymore even without this patch. And moreover
> we need put the CPU into PC10 power state to meet the E-star starndard,
> we need to revert this patch.
> [Fix]
> Revert the patch.
> [Test Case]
> Tested on the new icl laptops, we have not reproduce the timeout errors,
> and The PC can enter PC10.
> [Regression Risk]
> Low. We have done many tests.
> Hui Wang (1):
>   Revert "UBUNTU: SAUCE: i915: set disable_power_well=0 for icl
>     temporarily"
>  drivers/gpu/drm/i915/intel_runtime_pm.c | 5 -----
>  1 file changed, 5 deletions(-)

apparently the workaround is still needed


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