Re: [PATCH 6.12 437/466] drm/amd/display: Update Interface to Check UCLK DPM

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On Thu, Dec 12, 2024 at 06:45:07PM +0100, Jiri Slaby wrote:
> On 12. 12. 24, 16:00, Greg Kroah-Hartman wrote:
> > 6.12-stable review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > 
> > From: Austin Zheng <Austin.Zheng@xxxxxxx>
> > 
> > [ Upstream commit b8d046985c2dc41a0e264a391da4606099f8d44f ]
> > 
> > [Why]
> > Videos using YUV420 format may result in high power being used.
> > Disabling MPO may result in lower power usage.
> > Update interface that can be used to check power profile of a dc_state.
> > 
> > [How]
> > Allow pstate switching in VBlank as last entry in strategy candidates.
> > Add helper functions that can be used to determine power level:
> > -get power profile after a dc_state has undergone full validation
> 
> FWIW this was reverted in the Linus' tree:
> 
> commit 0e93b76cf92f229409e8da85c2a143868835fec3
> Author: Austin Zheng <Austin.Zheng@xxxxxxx>
> Date:   Mon Sep 23 10:07:32 2024 -0400
> 
>     drm/amd/display: Revert commit Update Interface to Check UCLK DPM
> 
>     This reverts commit b8d046985c2dc41a0e264a391da4606099f8d44f.
> 
>     Reverting as regression discovered on certain systems and golden values
>     need to updated.
> 
> 
> 
> Possibly, there are other fixes queued for 6.12, so the revert is not needed
> anymore?

No, you are right, I need this one.  For some reason I thought I had
applied it but it failed to apply cleanly and so it was dropped.  I'll
go fix it up by hand now...

thanks,

greg k-h




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