Richard Spiegel has uploaded this change for review. ( https://review.coreboot.org/27625
Change subject: soc/amd/stoneyridge/northbridge.c: Enable eDP HIGH_VDIFF ......................................................................
soc/amd/stoneyridge/northbridge.c: Enable eDP HIGH_VDIFF
The careena board needs different video setting to pass eye diagram test, which does not affect negatively the grunt board. In preparation for new VBIOS, AGESA environment needs eDP high vdiff enabled.
BUG=b:111673328 TEST=Add debug code to AGESA to display setted eDP. Build AGESA. Build and boot grunt. Add new code to grunt, build and boot, verify eDP changed.
Change-Id: Ic0452618bfc5e05b9ef8280bb8ba398ec7b4ce95 Signed-off-by: Richard Spiegel richard.spiegel@silverbackltd.com --- M src/soc/amd/stoneyridge/northbridge.c 1 file changed, 1 insertion(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/25/27625/1
diff --git a/src/soc/amd/stoneyridge/northbridge.c b/src/soc/amd/stoneyridge/northbridge.c index 6af1351..71fcf58 100644 --- a/src/soc/amd/stoneyridge/northbridge.c +++ b/src/soc/amd/stoneyridge/northbridge.c @@ -484,6 +484,7 @@ void SetNbEnvParams(GNB_ENV_CONFIGURATION *params) { params->IommuSupport = FALSE; + params->EDPv1_4VSMode = EDP_VS_HIGH_VDIFF_MODE; }
void SetNbMidParams(GNB_MID_CONFIGURATION *params)