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soc/intel/pantherlake: Add ICC Max configuration support

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Add configuration for Maximum Integrated Circuit Current (ICC) for
various SKUs and VR domains. The ICC values, defined in 1/4A increments,
specify the maximum allowable current for a given SKU and VR domain
configuration. This update enhances power management by allowing
tailored ICC settings.

Change-Id: I2c4712521da7b89cd4b2a6c499e11245b8eeb719
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88044
Reviewed-by: Bora Guvendik <bora.guvendik@intel.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Jeremy Compostella 2025-06-10 18:00:55 -07:00 • committed by Jérémy Compostella
commit c54658d200
2 changed files with 18 additions and 0 deletions
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12
src/soc/intel/pantherlake/chip.h
View file

@ -190,6 +190,7 @@ enum vr_domain {
VR_DOMAIN_IA,
VR_DOMAIN_GT,
VR_DOMAIN_SA,
VR_DOMAIN_ATOM,
NUM_VR_DOMAINS,
};
@ -416,6 +417,17 @@ struct soc_intel_pantherlake_config {
*/
uint16_t thermal_design_current[MAX_PTL_SKUS][NUM_VR_DOMAINS];
/*
* Maximum Integrated Current Capability (ICC) settings for various SKUs.
*
* ICC values represent the maximum allowable current for a given SKU
* and VR domain configuration.
*
* ICC unit is defined in 1/4A increments. For example, a value of 400
* corresponds to 100A.
*/
uint16_t icc_max[MAX_PTL_SKUS][NUM_VR_DOMAINS];
/*
* SerialIO device mode selection:
* PchSerialIoDisabled,

6
src/soc/intel/pantherlake/romstage/fsp_params.c
View file

@ -346,6 +346,12 @@ static void fill_fspm_vr_config_params(FSP_M_CONFIG *m_cfg,
m_cfg->TdcEnable[i] = 1;
m_cfg->TdcCurrentLimit[i] = config->thermal_design_current[map->sku][i];
}
for (size_t i = 0; i < ARRAY_SIZE(config->icc_max[0]); i++) {
if (!config->icc_max[map->sku][i])
continue;
m_cfg->IccMax[i] = config->icc_max[map->sku][i];
}
}
#if CONFIG(PLATFORM_HAS_EARLY_LOW_BATTERY_INDICATOR)