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vc/mediatek/mt8195: Enable DRAM Vcore DVFS settings 

Add the implementation for vcore voltage control.
Also remove the reporting of vio18 because it is fixed during DRAM init,
and we won't provide drivers for reading or writing it.

Signed-off-by: Ryan Chuang <ryan.chuang@mediatek.corp-partner.google.com>
Change-Id: I39342aea902a87cdc2c5b862e5d1a889fcc822c5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56106
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Ryan Chuang 2021-07-08 17:22:31 +08:00 committed by Hung-Te Lin
parent 2555bd410b
commit e46cd138ff
2 changed files with 6 additions and 2 deletions
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1
src/vendorcode/mediatek/mt8195/dramc/dramc_pi_main.c
View File

@ -272,7 +272,6 @@ 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("Vio18 = %d\n", dramc_get_vio18_voltage());
print("Vcore = %d\n", dramc_get_vcore_voltage());
print("Vdram = %d\n", dramc_get_vmdd_voltage(p->dram_type));
print("Vddq = %d\n", dramc_get_vmddq_voltage(p->dram_type));

7
src/vendorcode/mediatek/mt8195/dramc/dramc_top.c
View File

@ -352,8 +352,13 @@ unsigned int dramc_set_vcore_voltage(unsigned int vcore)
{
#ifdef MTK_PMIC_MT6359
return mtk_regulator_set_voltage(&reg_vcore, vcore, MAX_VCORE);
#endif
#elif defined(FOR_COREBOOT)
dramc_debug("%s set vcore to %u\n", __func__, vcore);
mainboard_set_regulator_vol(MTK_REGULATOR_VCORE, vcore);
return 0;
#else
return 0;
#endif
}
unsigned int dramc_get_vcore_voltage(void)