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From e4453fd27b842d13276b0e043280031de7f52140 Mon Sep 17 00:00:00 2001
From: Timothy Pearson <kb9vqf@pearsoncomputing.net>
Date: Fri, 7 Aug 2015 19:05:45 -0500
Subject: [PATCH 099/146] northbridge/amd/amdht: Fix poor performance on
Family 15h CPUs
---
src/northbridge/amd/amdht/h3ncmn.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/northbridge/amd/amdht/h3ncmn.c b/src/northbridge/amd/amdht/h3ncmn.c
index e03e5eb..e377ff2 100644
--- a/src/northbridge/amd/amdht/h3ncmn.c
+++ b/src/northbridge/amd/amdht/h3ncmn.c
@@ -1559,6 +1559,10 @@ static void setLinkData(sMainData *pDat, cNorthBridge *nb)
} else {
temp2 = 0x0;
}
+ /* NOTE
+ * The Family 15h BKDG Rev. 3.14 is wrong
+ * Freq[4] must be set before Freq[3:0], otherwise the register writes will be ignored!
+ */
if (is_gt_rev_d())
AmdPCIWriteBits(linkBase + HTHOST_FREQ_REV_REG_2, 0, 0, &temp2);
AmdPCIWriteBits(linkBase + HTHOST_FREQ_REV_REG, 11, 8, &temp);
--
1.7.9.5
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