[coreboot-gerrit] Patch set updated for coreboot: nb/amd/mct_ddr3: Fix RDIMM training failure on Fam15h

[Timothy Pearson (tpearson@raptorengineeringinc.com)]

Timothy Pearson (tpearson at raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13148

-gerrit

commit 103706de4b43df857f8a60087c63d969a4387914
Author: Timothy Pearson <tpearson at raptorengineeringinc.com>
Date:   Tue Nov 24 14:11:52 2015 -0600

    nb/amd/mct_ddr3: Fix RDIMM training failure on Fam15h
    
    Certain registered DIMMs failed training due to an error
    likely introduced during historical rebase.  Ensure that
    the SubMemclkRegDly bit is set according to BKDG
    recommendations on Family 15 processors.
    
    Change-Id: I24c95265dada9eabf4df280b6f2b4a1eb9cecaf1
    Signed-off-by: Timothy Pearson <tpearson at raptorengineeringinc.com>
---
 src/northbridge/amd/amdmct/mct_ddr3/mctproc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mctproc.c b/src/northbridge/amd/amdmct/mct_ddr3/mctproc.c
index cf13b40..fc62afb 100644
--- a/src/northbridge/amd/amdmct/mct_ddr3/mctproc.c
+++ b/src/northbridge/amd/amdmct/mct_ddr3/mctproc.c
@@ -66,6 +66,9 @@ u32 mct_SetDramConfigMisc2(struct DCTStatStruc *pDCTstat,
 		misc2 |= ((cs_mux_67 & 0x1) << 27);
 		misc2 &= ~(0x1 << 26);		/* CsMux45 = cs_mux_45 */
 		misc2 |= ((cs_mux_45 & 0x1) << 26);
+
+		if (pDCTstat->Status & (1 << SB_Registered))
+			misc2 |= 1 << SubMemclkRegDly;
 	} else if (pDCTstat->LogicalCPUID & (AMD_DR_Dx | AMD_DR_Cx)) {
 		if (pDCTstat->Status & (1 << SB_Registered)) {
 			misc2 |= 1 << SubMemclkRegDly;