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

Fix the issue that power consumption of single rank DRAM is greater
than dual rank DRAM due to incorrect settings of rank1 CKE.
Set rank1 CKE to the correct state to fix this issue.

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

Signed-off-by: Ryan Chuang <ryan.chuang@mediatek.corp-partner.google.com>
Change-Id: If336197aea4770dda1332b6e83da8ec9a4f9d77b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59715
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
This commit is contained in:
Ryan Chuang 2021-11-25 16:15:27 +08:00 committed by Hung-Te Lin
parent 5fb0e5564d
commit 9f10950426
1 changed files with 5 additions and 0 deletions
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5
src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c
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@ -1946,6 +1946,11 @@ int Init_DRAM(DRAM_DRAM_TYPE_T dram_type, DRAM_CBT_MODE_EXTERN_T dram_cbt_mode_e
#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();