[coreboot-gerrit] Change in coreboot[master]: vc/mediatek/mt8195: Optimize DRAM init time by reducing I2C I/O

[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/+/56850

to review the following change.

Change subject: vc/mediatek/mt8195: Optimize DRAM init time by reducing I2C I/O
......................................................................

vc/mediatek/mt8195: Optimize DRAM init time by reducing I2C I/O

Disable reading of vdram/vddq/vmddr to reduce access of i2c
to reduce DRAM init time by about 30ms.
The values were only needed by HQA report and not needed on
production units.

BUG=b:195274787

Signed-off-by: Ryan Chuang 
Change-Id: I32cd68fb8b52cec6e145d6772475fde0130ca6ac
---
M src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c
1 file changed, 2 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/50/56850/1

diff --git a/src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c b/src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c
index b5b9ae1..f39023b 100644
--- a/src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c
+++ b/src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c
@@ -273,10 +273,12 @@
 #ifndef DDR_INIT_TIME_PROFILING
     print("Read voltage for %d, %d\n", p->frequency, vGet_Current_SRAMIdx(p));
     print("Vcore = %d\n", dramc_get_vcore_voltage());
+#ifdef FOR_HQA_REPORT_USED
     print("Vdram = %d\n", dramc_get_vmdd_voltage(p->dram_type));
     print("Vddq = %d\n", dramc_get_vmddq_voltage(p->dram_type));
     print("Vmddr = %d\n", dramc_get_vmddr_voltage());
 #endif
+#endif

#endif
 #endif