diff options
Diffstat (limited to 'src/soc/intel/skylake')
| -rw-r--r-- | src/soc/intel/skylake/vr_config.c | 90 |
1 files changed, 74 insertions, 16 deletions
diff --git a/src/soc/intel/skylake/vr_config.c b/src/soc/intel/skylake/vr_config.c index 5f7de44905..33ce54ada5 100644 --- a/src/soc/intel/skylake/vr_config.c +++ b/src/soc/intel/skylake/vr_config.c @@ -20,6 +20,7 @@ #include <soc/ramstage.h> #include <soc/vr_config.h> #include <console/console.h> +#include <intelblocks/cpulib.h> /* Default values for domain configuration. PSI3 and PSI4 are disabled. */ static const struct vr_config default_configs[NUM_VR_DOMAINS] = { @@ -89,6 +90,8 @@ static const struct vr_config default_configs[NUM_VR_DOMAINS] = { static uint16_t get_sku_icc_max(int domain) { + const uint16_t tdp = cpu_get_power_max(); + static uint16_t mch_id = 0, igd_id = 0, lpc_id = 0; if (!mch_id) { struct device *dev = pcidev_path_on_root(SA_DEVFN_ROOT); @@ -96,7 +99,10 @@ static uint16_t get_sku_icc_max(int domain) } if (!igd_id) { struct device *dev = pcidev_path_on_root(SA_DEVFN_IGD); - igd_id = pci_read_config16(dev, PCI_DEVICE_ID); + if (dev) + igd_id = pci_read_config16(dev, PCI_DEVICE_ID); + else + igd_id = 0xffff; } if (!lpc_id) { struct device *dev = pcidev_path_on_root(PCH_DEVFN_LPC); @@ -104,23 +110,75 @@ static uint16_t get_sku_icc_max(int domain) } /* - * Iccmax table from Doc #559100 Section 7.2 DC Specifications, the - * Iccmax is the same among KBL-Y but KBL-U/R. - * Addendum for AML-Y #594883, IccMax for IA core is 28A. - * +----------------+-------------+---------------+------+-----+ - * | Domain/Setting | SA | IA | GTUS | GTS | - * +----------------+-------------+---------------+------+-----+ - * | IccMax(KBL-U/R)| 6A(U42) | 64A(U42) | 31A | 31A | - * | | 4.5A(Others)| 29A(P/C) loadline| | | - * | | | 32A(i3/i5) | | | - * +----------------+-------------+---------------+------+-----+ - * | IccMax(KBL-Y) | 4.1A | 24A | 24A | 24A | - * +----------------+-------------+---------------+------+-----+ - * | IccMax(AML-Y) | 4.1A | 28A | 24A | 24A | - * +----------------+-------------+---------------+------+-----+ - */ + * Iccmax table from Doc #559100 Section 7.2 DC Specifications, the + * Iccmax is the same among KBL-Y but KBL-U/R. + * Addendum for AML-Y #594883, IccMax for IA core is 28A. + * KBL-S #335195, KBL-H #335190 + * +----------------+-------------+---------------+------+-----+ + * | Domain/Setting | SA | IA | GTUS | GTS | + * +----------------+-------------+---------------+------+-----+ + * | IccMax(KBL-S) | 11.1A | 100A | 45A | 45A | + * | | | ... | | | + * | | | 40A | | | + * +----------------+-------------+---------------+------+-----+ + * | IccMax(KBL-H) | 11.1A(45W) | 68A | 55A | 55A | + * | | 6.6A(Others)| 60A | | | + * +----------------+-------------+---------------+------+-----+ + * | IccMax(KBL-U/R)| 6A(U42) | 64A(U42) | 31A | 31A | + * | | 4.5A(Others)| 29A(P/C) | | | + * | | | 32A(i3/i5) | | | + * +----------------+-------------+---------------+------+-----+ + * | IccMax(KBL-Y) | 4.1A | 24A | 24A | 24A | + * +----------------+-------------+---------------+------+-----+ + * | IccMax(AML-Y) | 4.1A | 28A | 24A | 24A | + * +----------------+-------------+---------------+------+-----+ + */ switch (mch_id) { + case PCI_DEVICE_ID_INTEL_KBL_ID_S: { + uint16_t icc_max[NUM_VR_DOMAINS] = { + VR_CFG_AMP(11.1), + VR_CFG_AMP(40), + VR_CFG_AMP(45), + VR_CFG_AMP(45), + }; + if (tdp >= 54) + icc_max[VR_IA_CORE] = VR_CFG_AMP(58); + else if (tdp >= 51) + icc_max[VR_IA_CORE] = VR_CFG_AMP(45); + + return icc_max[domain]; + + } + case PCI_DEVICE_ID_INTEL_KBL_ID_DT_2: /* fallthrough */ + case PCI_DEVICE_ID_INTEL_KBL_ID_DT: { + uint16_t icc_max[NUM_VR_DOMAINS] = { + VR_CFG_AMP(11.1), + VR_CFG_AMP(66), + VR_CFG_AMP(55), + VR_CFG_AMP(55), + }; + if (tdp >= 91) + icc_max[VR_IA_CORE] = VR_CFG_AMP(100); + else if (tdp >= 65) + icc_max[VR_IA_CORE] = VR_CFG_AMP(79); + + return icc_max[domain]; + } + case PCI_DEVICE_ID_INTEL_KBL_ID_H: { + uint16_t icc_max[NUM_VR_DOMAINS] = { + VR_CFG_AMP(6.6), + VR_CFG_AMP(60), + VR_CFG_AMP(55), + VR_CFG_AMP(55), + }; + if (tdp >= 45) { + icc_max[VR_SYSTEM_AGENT] = VR_CFG_AMP(11.1); + icc_max[VR_IA_CORE] = VR_CFG_AMP(68); + } + + return icc_max[domain]; + } case PCI_DEVICE_ID_INTEL_KBL_U_R: { static const uint16_t icc_max[NUM_VR_DOMAINS] = { VR_CFG_AMP(6), |