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soc/amd/common/fsp/dmi: Set dimm voltage based on memory type 

Voltage set based on standard configuration for each type.

TEST=build/boot google/skyrim, verify output in cbmem console log,
DMI type 17 table.

Change-Id: I9b1e68a9417e43cbb9c55b4c471664f3f9090342
Signed-off-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66981
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
This commit is contained in:
Matt DeVillier 2022-08-23 11:54:50 -05:00 committed by Martin L Roth
parent b4a5ef4ffe
commit 17144bc521
1 changed files with 23 additions and 0 deletions
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23
src/soc/amd/common/fsp/dmi.c
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@ -37,6 +37,25 @@ static uint16_t ddr_speed_mhz_to_reported_mts(uint16_t ddr_type, uint16_t speed)
}
}
/**
* Return DDR voltage (in mV) based on memory type
*/
static uint16_t ddr_get_voltage(uint16_t ddr_type)
{
switch (ddr_type) {
case MEMORY_TYPE_DDR4:
return 1200;
case MEMORY_TYPE_LPDDR4:
case MEMORY_TYPE_DDR5:
return 1100;
case MEMORY_TYPE_LPDDR5:
return 1050;
default:
printk(BIOS_ERR, "Unknown memory type %x\n", ddr_type);
return 0;
}
}
/**
* Populate dimm_info using AGESA TYPE17_DMI_INFO.
*/
@ -67,6 +86,8 @@ static void transfer_memory_info(const TYPE17_DMI_INFO *dmi17,
dimm->bank_locator = 0;
dimm->vdd_voltage = ddr_get_voltage(dmi17->MemoryType);
strncpy((char *)dimm->module_part_number, dmi17->PartNumber,
sizeof(dimm->module_part_number) - 1);
}
@ -79,6 +100,7 @@ static void print_dimm_info(const struct dimm_info *dimm)
" ddr_type: 0x%hx\n"
" max_speed_mts: %hu\n"
" config_speed_mts: %hu\n"
" vdd_voltage: %hu\n"
" rank_per_dimm: %hhu\n"
" channel_num: %hhu\n"
" dimm_num: %hhu\n"
@ -92,6 +114,7 @@ static void print_dimm_info(const struct dimm_info *dimm)
dimm->ddr_type,
dimm->max_speed_mts,
dimm->configured_speed_mts,
dimm->vdd_voltage,
dimm->rank_per_dimm,
dimm->channel_num,
dimm->dimm_num,