Re: [PATCH v10 06/11] drm/i915: Enable big joiner support in enable and disable sequences.

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On Mon, Oct 19, 2020 at 02:34:07PM +0300, Jani Nikula wrote:
> On Fri, 16 Oct 2020, "Navare, Manasi" <manasi.d.navare@xxxxxxxxx> wrote:
> > I really want to push back on any design changes at this point since we have a working solution
> > and we currently dont have any special cases. Like I discussed with you all the commit modeset enables
> > code is now generic and similar to 2p2p.
> > These kind of changes/ optimizations can be done later. Like you suggested we should get the basic working
> > solution and support in.
> 
> Like I said in [1], this is a big scary patch that has been reported to
> break DSI VDSC. I tried to skim through it, but it's really impossible
> to identify the one thing that could break DSI.
> 
> I mean, even if you had the hardware to test, it could take days to
> identify the regressing part here.
> 
> And this isn't really specific to DSI, but rather to *any* regression
> this might cause. Afterwards, would you stand a chance of telling what
> goes wrong if you get a bisect result?

Yes I agree, it took me ages to understand and inherit this patch from Maarten.
I will try to split this patch into multiple small patches in my next rev.

Manasi

> 
> 
> BR,
> Jani.
> 
> 
> [1] http://lore.kernel.org/r/87o8l5awvr.fsf@xxxxxxxxx
> 
> 
> -- 
> Jani Nikula, Intel Open Source Graphics Center
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