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/* SPDX-License-Identifier: GPL-2.0-only */
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <fsp/api.h>
#include <soc/ramstage.h>
#include <soc/vr_config.h>
#include <console/console.h>
#include <intelblocks/cpulib.h>
/*
* VR Configurations for IA and GT domains for ADL-P SKU's.
*
* +----------------+-----------+-------+-------+---------+-------------+----------+
* | SKU | Setting | AC LL | DC LL | ICC MAX | TDC Current | TDC Time |
* | | |(mOhms)|(mOhms)| (A) | (A) | (msec) |
* +----------------+-----------+-------+-------+---------+-------------+----------+
* | ADL-P 682(45W) | IA | 2.3 | 2.3 | 160 | 57 | 28000 |
* + +-----------+-------+-------+---------+-------------+----------+
* | | GT | 3.2 | 3.2 | 50 | 57 | 28000 |
* +----------------+-----------+-------+-------+---------+-------------+----------+
* | ADL-P 482(28W) | IA | 2.3 | 2.3 | 109 | 40 | 28000 |
* + +-----------+-------+-------+---------+-------------+----------+
* | | GT | 3.2 | 3.2 | 50 | 40 | 28000 |
* +----------------+-----------+-------+-------+---------+-------------+----------+
* | ADL-P 282(15W) | IA | 2.8 | 2.8 | 80 | 20 | 28000 |
* + +-----------+-------+-------+---------+-------------+----------+
* | | GT | 3.2 | 3.2 | 40 | 20 | 28000 |
* +----------------+-----------+-------+-------+---------+-------------+----------+
*/
struct vr_lookup {
uint16_t mchid;
uint32_t conf[NUM_VR_DOMAINS];
};
static uint32_t load_table(const struct vr_lookup *tbl, const int tbl_entries, const int domain,
const uint16_t mch_id)
{
for (size_t i = 0; i < tbl_entries; i++) {
if (tbl[i].mchid != mch_id)
continue;
return tbl[i].conf[domain];
}
printk(BIOS_ERR, "ERROR: Unknown MCH (0x%x) in %s\n", mch_id, __func__);
return 0;
}
static const struct vr_lookup vr_config_ll[] = {
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_3, VR_CFG_ALL_DOMAINS_LOADLINE(2.3, 3.2) },
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_5, VR_CFG_ALL_DOMAINS_LOADLINE(2.3, 3.2) },
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_7, VR_CFG_ALL_DOMAINS_LOADLINE(2.8, 3.2) },
};
static const struct vr_lookup vr_config_icc[] = {
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_3, VR_CFG_ALL_DOMAINS_ICC(160, 50) },
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_5, VR_CFG_ALL_DOMAINS_ICC(109, 50) },
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_7, VR_CFG_ALL_DOMAINS_ICC(80, 40) },
};
static const struct vr_lookup vr_config_tdc_timewindow[] = {
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_3, VR_CFG_ALL_DOMAINS_TDC(28000, 28000) },
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_5, VR_CFG_ALL_DOMAINS_TDC(28000, 28000) },
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_7, VR_CFG_ALL_DOMAINS_TDC(28000, 28000) },
};
static const struct vr_lookup vr_config_tdc_currentlimit[] = {
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_3, VR_CFG_ALL_DOMAINS_TDC_CURRENT(57, 57) },
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_5, VR_CFG_ALL_DOMAINS_TDC_CURRENT(40, 40) },
{ PCI_DEVICE_ID_INTEL_ADL_P_ID_7, VR_CFG_ALL_DOMAINS_TDC_CURRENT(20, 20) },
};
void fill_vr_domain_config(FSP_S_CONFIG *s_cfg,
int domain, const struct vr_config *chip_cfg)
{
const struct vr_config *cfg;
if (domain < 0 || domain >= NUM_VR_DOMAINS)
return;
/* Use device tree override if requested */
if (chip_cfg->vr_config_enable) {
cfg = chip_cfg;
s_cfg->AcLoadline[domain] = cfg->ac_loadline;
s_cfg->DcLoadline[domain] = cfg->dc_loadline;
s_cfg->IccMax[domain] = cfg->icc_max;
s_cfg->TdcTimeWindow[domain] = cfg->tdc_timewindow;
s_cfg->TdcCurrentLimit[domain] = cfg->tdc_currentlimit;
} else {
uint16_t mch_id = 0;
if (!mch_id) {
struct device *dev = pcidev_path_on_root(SA_DEVFN_ROOT);
mch_id = dev ? pci_read_config16(dev, PCI_DEVICE_ID) : 0xffff;
}
s_cfg->AcLoadline[domain] = load_table(vr_config_ll, ARRAY_SIZE(vr_config_ll),
domain, mch_id);
s_cfg->DcLoadline[domain] = load_table(vr_config_ll, ARRAY_SIZE(vr_config_ll),
domain, mch_id);
s_cfg->IccMax[domain] = load_table(vr_config_icc, ARRAY_SIZE(vr_config_icc),
domain, mch_id);
s_cfg->TdcTimeWindow[domain] = load_table(vr_config_tdc_timewindow,
ARRAY_SIZE(vr_config_tdc_timewindow),
domain, mch_id);
s_cfg->TdcCurrentLimit[domain] = load_table(vr_config_tdc_currentlimit,
ARRAY_SIZE(vr_config_tdc_currentlimit),
domain, mch_id);
}
/* Check TdcTimeWindow and TdcCurrentLimit,
Set TdcEnable and Set VR TDC Input current to root mean square */
if (s_cfg->TdcTimeWindow[domain] != 0 && s_cfg->TdcCurrentLimit[domain] != 0) {
s_cfg->TdcEnable[domain] = 1;
s_cfg->Irms[domain] = 1;
}
}
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