From 43a3aa0cf4ef427de6b2e445598c4aa300718bb1 Mon Sep 17 00:00:00 2001 From: Ryan Chuang Date: Fri, 6 Aug 2021 11:04:23 +0800 Subject: 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 Reviewed-on: https://review.coreboot.org/c/coreboot/+/56850 Reviewed-by: Rex-BC Chen Reviewed-by: Yu-Ping Wu Tested-by: build bot (Jenkins) --- src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'src/vendorcode/mediatek/mt8195') 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 -- cgit v1.2.3