diff options
| -rw-r--r-- | src/soc/intel/broadwell/Kconfig | 1 | ||||
| -rw-r--r-- | src/soc/intel/broadwell/pcie.c | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/src/soc/intel/broadwell/Kconfig b/src/soc/intel/broadwell/Kconfig index c14766343d..2e70f45eea 100644 --- a/src/soc/intel/broadwell/Kconfig +++ b/src/soc/intel/broadwell/Kconfig @@ -36,6 +36,7 @@ config CPU_SPECIFIC_OPTIONS select PCIEXP_ASPM select PCIEXP_COMMON_CLOCK select PCIEXP_CLK_PM + select PCIEXP_L1_SUB_STATE select SMM_MODULES select SMM_TSEG select SMP diff --git a/src/soc/intel/broadwell/pcie.c b/src/soc/intel/broadwell/pcie.c index fe22bccf63..4e5bbfa015 100644 --- a/src/soc/intel/broadwell/pcie.c +++ b/src/soc/intel/broadwell/pcie.c @@ -651,8 +651,15 @@ static void pcie_set_subsystem(device_t dev, unsigned vendor, unsigned device) pci_write_config32(dev, 0x94, (device << 16) | vendor); } +static void pcie_set_L1_ss_max_latency(device_t dev, unsigned int off) +{ + /* Set max snoop and non-snoop latency for Broadwell */ + pci_mmio_write_config32(dev, off, 0x10031003); +} + static struct pci_operations pcie_ops = { .set_subsystem = pcie_set_subsystem, + .set_L1_ss_latency = pcie_set_L1_ss_max_latency, }; static struct device_operations device_ops = { |