Patch set updated for coreboot: cpu/amd/fam10h-15h: Enable DFE on Family 15h HT3 links

[Timothy Pearson]

Timothy Pearson ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/12072

-gerrit

commit 134ec4201a53e9dfeef21c95643a9bc855456863
Author: Timothy Pearson 
Date:   Sun Sep 13 15:54:32 2015 -0500

cpu/amd/fam10h-15h: Enable DFE on Family 15h HT3 links

Decision Feedback Equalization (DFE) is a form of dynamic
    link training used to lower the overall error rate within
    the coherent fabric.  Enable it on all capable HT links.

Change-Id: I5e719984ddd723f9e375ff1a9d4fa1ef042cf3eb
    Signed-off-by: Timothy Pearson 
---
 src/cpu/amd/family_10h-family_15h/defaults.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/cpu/amd/family_10h-family_15h/defaults.h b/src/cpu/amd/family_10h-family_15h/defaults.h
index 28df747..57c0518 100644
--- a/src/cpu/amd/family_10h-family_15h/defaults.h
+++ b/src/cpu/amd/family_10h-family_15h/defaults.h
@@ -840,4 +840,12 @@ static const struct {
    { 0xC0, AMD_FAM15_ALL, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
      0x40040000, 0xe01F0000 },	/* [31:29] RttCtl = 02h,
    				   [20:16] RttIndex = 04h */
+
+	{ 0xc4, AMD_FAM15_ALL, AMD_PTYPE_ALL, HTPHY_LINKTYPE_HT3,
+	  0x00013480, 0x0003fc80 },	/* [17:10] DCV = 0x4d,
+					       [7] DfeEn = 0x1 */
+
+	{ 0xd4, AMD_FAM15_ALL, AMD_PTYPE_ALL, HTPHY_LINKTYPE_HT3,
+	  0x00013480, 0x0003fc80 },     /* [17:10] DCV = 0x4d,
+					       [7] DfeEn = 0x1 */
 };