[coreboot-gerrit] Change in coreboot[master]: mediatek/mt8183: Add new config for EMCP DDR

[huayang duan (Code Review)]

huayang duan has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/34989 )

Change subject: mediatek/mt8183: Add new config for EMCP DDR
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mediatek/mt8183: Add new config for EMCP DDR

Devices using eMCP may run in a high DRAM frequency (e.g., 3600Mbs) while
discrete DRAM can only run at 3200Mbps.
A new Kconfig is introduced so mainboard can select right config if the
board support eMCP or not.

BUG=b:80501386
BRANCH=none
TEST=Boots correctly and stress test pass on Kukui.

Change-Id: I9b73c8b512db5104896ea0d330d56e63eb50a44b
Signed-off-by: Huayang Duan 
---
M src/soc/mediatek/mt8183/Kconfig
1 file changed, 6 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/89/34989/1

diff --git a/src/soc/mediatek/mt8183/Kconfig b/src/soc/mediatek/mt8183/Kconfig
index c60cdea..a2f7a04 100644
--- a/src/soc/mediatek/mt8183/Kconfig
+++ b/src/soc/mediatek/mt8183/Kconfig
@@ -22,6 +22,12 @@
    help
      This option enables additional DRAM related debug messages.

+config MT8183_DRAM_EMCP
+	bool
+	default n
+	help
+	  The EMCP platform should select this config for using different DRAM frequency.
+
 config MEMORY_TEST
    bool
    default y