[Bug 89554] [SKL Bisected] eDP can not be lighted up after entering kernel

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89554

--- Comment #30 from Sonika <sonika.jindal at intel.com> ---
(In reply to Jani Nikula from comment #29)
> Sonika, why do you need to look at VBT to support edp1.4 low vswing? Is the
> panel support not available from DPCD?

Ideally, these low vswing/preemph values are supported from edp1.4 onwards.
But there are panels (edp1.2, 1.3) which can support low vswing values.
Thats why the AEs get the right value for particular panel and appropriately
set the field in vbt if it can support low values (200mV)

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