Re: [PATCH] drm/msm/devfreq: Restrict idle clamping to a618 for now

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Hi all,

On 18/10/2021 17:42, John Stultz wrote:
On Mon, Oct 18, 2021 at 8:31 AM Rob Clark <robdclark@xxxxxxxxx> wrote:

From: Rob Clark <robdclark@xxxxxxxxxxxx>

Until we better understand the stability issues caused by frequent
frequency changes, lets limit them to a618.

Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
---
Caleb/John, I think this should help as a workaround for the power
instability issues on a630.. could you give it a try?

While I hit it fairly often, I can't reliably reproduce the crash, but
in limited testing this seems ok to me.
I've not hit the crash so far, nor seen any other negative side
effects over 5.14.

So for what that's worth:
Tested-by: John Stultz <john.stultz@xxxxxxxxxx>

Caleb has better luck tripping this issue right away, so they can
hopefully provide a more assured response.
This prevents the crash on the OnePlus 6 as the frequency can no longer go to zero.

I would like to find a better solution that still allows proper idling on a630, but that can wait for 5.16.

Tested-by: Caleb Connolly <caleb.connolly@xxxxxxxxxx>

thanks
-john


--
Kind Regards,
Caleb (they/them)



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