[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 #27 from Sonika <sonika.jindal at intel.com> ---
So, this panel doesn't support low vswing and pre-emphasis settings and should
use the default DP translation table:
 0 =  Low Power Swing setting(200 mV)
 1 =  Default Swing settings(400 mV)

The VBT sets this value as per the panel requirement from panel vendor.
Looks like in the VBT it is set to Low Power Swing setting which is not correct
always.
By default it should be set to the Default Vswing/Preemph table.

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