diff options
| author | Ryan Chuang <ryan.chuang@mediatek.corp-partner.google.com> | 2021-08-06 11:04:23 +0800 |
|---|---|---|
| committer | Hung-Te Lin <hungte@chromium.org> | 2021-08-09 01:53:56 +0000 |
| commit | 43a3aa0cf4ef427de6b2e445598c4aa300718bb1 (patch) | |
| tree | 6c57d0e76db8fcb00bb0e0dbd4dfa17d6701dbbd /src/vendorcode | |
| parent | eb94a4a6de5d4de483c99cbaead364fdde73e2d1 (diff) | |
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 <ryan.chuang@mediatek.corp-partner.google.com>
Change-Id: I32cd68fb8b52cec6e145d6772475fde0130ca6ac
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56850
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/vendorcode')
| -rw-r--r-- | src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c b/src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c index b5b9ae1713..f39023bd14 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 @@ void vSetVcoreByFreq(DRAMC_CTX_T *p) #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 |