diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/tigerlake/Kconfig | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/soc/intel/tigerlake/Kconfig b/src/soc/intel/tigerlake/Kconfig index 00913c7e64..35d8603741 100644 --- a/src/soc/intel/tigerlake/Kconfig +++ b/src/soc/intel/tigerlake/Kconfig @@ -287,4 +287,22 @@ config SOC_INTEL_CRASHLOG help Enables CrashLog. +# Intel recommends reserving the following resources per USB4 root port, +# from TGL BIOS Spec (doc #611569) Revision 0.7.6 Section 7.2.5.1.5 +# - 42 buses +# - 194 MiB Non-prefetchable memory +# - 448 MiB Prefetchable memory +if SOC_INTEL_ENABLE_USB4_PCIE_RESOURCES + +config PCIEXP_HOTPLUG_BUSES + default 42 + +config PCIEXP_HOTPLUG_MEM + default 0xc200000 # 194 MiB + +config PCIEXP_HOTPLUG_PREFETCH_MEM + default 0x1c000000 # 448 MiB + +endif # SOC_INTEL_ENABLE_USB4_PCIE_RESOURCES + endif |