diff options
| author | Kenji Chen <kenji.chen@intel.com> | 2014-10-10 03:08:15 +0800 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2015-04-02 22:27:49 +0200 |
| commit | b71d9b8a0f02d5f458620cb21cdfe7799b1faf84 (patch) | |
| tree | cff61f8581b791b2247fd3137516a5cdd1ac38b4 /src/soc | |
| parent | 1d84ef57c2f095e1b7fc63546860b018dfea1889 (diff) | |
Broadwell: Select PCIE_L1_SUB_STATE and apply Broadwell settings.
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
BUG=chrome-os-partner:31424
TEST=Build an image and confirm the settings are correctly applied
to registers for PCIe L1 Sub-State feature enabling.
Original-Commit-Id: b94c8c715febe3a04bfdf52f7b69d73ece0f6faf
Original-Signed-off-by: Kenji Chen <kenji.chen@intel.com>
Original-Change-Id: I07ce6eea648b1b37d606f5529edad184e3de70ac
Original-Reviewed-on: https://chromium-review.googlesource.com/222599
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Change-Id: I07336599797c09bf23e5b15059d6ad812fdc7c61
Reviewed-on: http://review.coreboot.org/9223
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/soc')
| -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 = { |