Re: [PATCH 3/3] drm/i915: Fix plane watermark mismatches

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On Wed, Feb 17, 2021 at 05:24:03PM +0000, Souza, Jose wrote:
> On Fri, 2021-02-12 at 23:13 +0200, Ville Syrjälä wrote:
> > On Fri, Feb 12, 2021 at 07:44:22PM +0000, Souza, Jose wrote:
> > > On Fri, 2021-02-12 at 20:35 +0200, Ville Syrjälä wrote:
> > > > On Fri, Feb 12, 2021 at 10:22:01AM -0800, José Roberto de Souza wrote:
> > > > > Found a system were firmware/BIOS left the plane_res_b and plane_res_l
> > > > > set with non-zero values for disable planes.
> > > > 
> > > > It pretty much happens always since the reset value is not zero.
> > > > IIRC we made the state chcker pedantic enough to complain about
> > > > that, so we need to clean it up.
> > > 
> > > Are you planning to fix it soon?
> > 
> > Fix what exactly? I guess you're seeing an actual problem of some sort?
> 
> Your comment above made me understand that you were planning to fix this plane watermark mismatches for disabled planes in other way other than what
> this patch does.
> Or should we proceed with this solution? 

There should be no mismatches with the current scheme.
We explicitly program wms to 0 for disabled planes.

-- 
Ville Syrjälä
Intel
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