Re: [PATCH] drm/i915/skl: Add module parameter to select edp vswing table

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On Tue, 05 May 2015, Damien Lespiau <damien.lespiau@xxxxxxxxx> wrote:
> On Tue, May 05, 2015 at 02:39:48PM +0300, Jani Nikula wrote:
>> There's still the question whether we can default to using the vbt value
>> if that can be broken...
>
> This is a workaround for SDPs loaded with a "default" VBT which doesn't
> correspond to the full fleet of SPDs. For actual product, it's really
> expected to have a VBT with a correct low vswing bit set, otherwise the
> panel won't lit up (even on Windows!).
>
> It's probably a good idea to add a comment saying that's it's a
> workaround for early platform with generic-ish VBT. Something that we
> should remove in a bit.

Thanks for the clarification, Damien. That settles the default then. I'd
still like the module parameter to be effective even if changed runtime.

BR,
Jani.



>
> -- 
> Damien

-- 
Jani Nikula, Intel Open Source Technology Center
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