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-rw-r--r--resources/libreboot/patch/kgpe-d16/0099-northbridge-amd-amdht-Fix-poor-performance-on-Family.patch28
1 files changed, 28 insertions, 0 deletions
diff --git a/resources/libreboot/patch/kgpe-d16/0099-northbridge-amd-amdht-Fix-poor-performance-on-Family.patch b/resources/libreboot/patch/kgpe-d16/0099-northbridge-amd-amdht-Fix-poor-performance-on-Family.patch
new file mode 100644
index 0000000..32121d3
--- /dev/null
+++ b/resources/libreboot/patch/kgpe-d16/0099-northbridge-amd-amdht-Fix-poor-performance-on-Family.patch
@@ -0,0 +1,28 @@
+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
+