Change in coreboot[master]: vc/mediatek/mt8195: Fix rank1 CKE setting for single-rank DRAM

[Rex-BC Chen (Code Review)]

Attention is currently required from: Ryan Chuang.
Hello Ryan Chuang,

I'd like you to do a code review. Please visit

https://review.coreboot.org/c/coreboot/+/59715

to review the following change.

Change subject: vc/mediatek/mt8195: Fix rank1 CKE setting for single-rank DRAM
......................................................................

vc/mediatek/mt8195: Fix rank1 CKE setting for single-rank DRAM

Fix rank1 CKE setting for single-rank DRAM power consumption issue.

BUG=b:196867407
TEST=DUT can boot to OS.

Signed-off-by: Ryan Chuang 
Change-Id: If336197aea4770dda1332b6e83da8ec9a4f9d77b
---
M src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c
1 file changed, 5 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/15/59715/1

diff --git a/src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c b/src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c
index e7e8f89..e3baf7b 100644
--- a/src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c
+++ b/src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c
@@ -1946,6 +1946,11 @@
 #endif
     }

+    if (p->support_rank_num == RANK_SINGLE){
+        CKEFixOnOff(p, RANK_1, CKE_DYNAMIC, TO_ALL_CHANNEL);
+        mcSHOW_DBG_MSG(("Set RANK1 CKE to DYNAMIC\n"));
+    }
+
     #if (FOR_DV_SIMULATION_USED == 0 && SW_CHANGE_FOR_SIMULATION == 0)
     U32 backup_broadcast;
     backup_broadcast = GetDramcBroadcast();