skylake: Enable DDI-A 4-lane support if GOP does not execute

Hardware / Coreboot - Duncan Laurie [chromium.org] - 15 February 2016 01:05 UTC

This change will allow the kernel to use 4-lane eDP connections if the GOP driver does not execute and set this bit. If GOP has executed (everyone but Chrome OS verified mode) the link will already be up and this will do nothing.

BUG=chrome-os-partner:50197 BRANCH=glados TEST=boot on chell and ensure 4

Change-Id: I9e2328b00db84f26b9bd03220b8ac0bd5f64cfbf

3054c8b skylake: Enable DDI-A 4-lane support if GOP does not execute
src/soc/intel/skylake/igd.c | 21 +++++++++++++++++----
1 file changed, 17 insertions(+), 4 deletions(-)

Upstream: review.coreboot.org

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