[coreboot-gerrit] Patch set updated for coreboot: northbridge/amd/amdht: Fix poor performance on Family 15h CPUs

[Timothy Pearson]

Timothy Pearson ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/12030

-gerrit

commit c6b5490741be05c366fb8a38dcd5786d2602c731
Author: Timothy Pearson 
Date:   Fri Aug 7 19:05:45 2015 -0500

northbridge/amd/amdht: Fix poor performance on Family 15h CPUs

Change-Id: I37db191c144c81aba5d4a1e6291db5669a35a31a
    Signed-off-by: Timothy Pearson 
---
 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 29524af..c97d592 100644
--- a/src/northbridge/amd/amdht/h3ncmn.c
+++ b/src/northbridge/amd/amdht/h3ncmn.c
@@ -1555,6 +1555,10 @@ 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);