[coreboot-gerrit] Patch set updated for coreboot: nb/amd/amdmct/mct_ddr3: Force DRAM retraining on every boot

[Timothy Pearson (tpearson@raptorengineeringinc.com)]

Timothy Pearson (tpearson at raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/12034

-gerrit

commit 74490d92f56f5e14170ee2401fa66ba96bdc420b
Author: Timothy Pearson <tpearson at raptorengineeringinc.com>
Date:   Fri Aug 7 23:59:33 2015 -0500

    nb/amd/amdmct/mct_ddr3: Force DRAM retraining on every boot
    
    Stability issues have arisen on multiple Family 15h systems
    when configuration restoration is enabled.  In all cases these
    stability issues resolved by allowing the RAM to go through a
    full training cycle.
    
    Change-Id: I017e0dd5120110124d5b5d5276befef6f7740614
    Signed-off-by: Timothy Pearson <tpearson at raptorengineeringinc.com>
---
 src/northbridge/amd/amdmct/mct_ddr3/mct_d.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
index b80918c..1dce138 100644
--- a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
+++ b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
@@ -1742,6 +1742,16 @@ restartinit:
 					allow_config_restore = 0;
 		}
 
+		/* FIXME
+		 * Stability issues have arisen on multiple Family 15h systems
+		 * when configuration restoration is enabled.  In all cases these
+		 * stability issues resolved by allowing the RAM to go through a
+		 * full training cycle.
+		 *
+		 * Debug and reenable this!
+		 */
+		allow_config_restore = 0;
+
 		for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) {
 			struct DCTStatStruc *pDCTstat;
 			pDCTstat = pDCTstatA + Node;