Add support for enabling PCIe Common Clock and ASPM
These are guarded by individual Kconfig entries. The deprecated
CONFIG_PCIE_TUNING defines have been removed in favor of using specific
config options.
This is the generic half, there is board-specific pieces
still to come that tune before and after ASPM is enabled.
Change-Id: I3fe46282eada67629e9eeeed07e487dff54f2729
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/735
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
diff --git a/src/include/device/pciexp.h b/src/include/device/pciexp.h
index 409f211..87a5002 100644
--- a/src/include/device/pciexp.h
+++ b/src/include/device/pciexp.h
@@ -2,6 +2,13 @@
#define DEVICE_PCIEXP_H
/* (c) 2005 Linux Networx GPL see COPYING for details */
+enum aspm_type {
+ PCIE_ASPM_NONE = 0,
+ PCIE_ASPM_L0S = 1,
+ PCIE_ASPM_L1 = 2,
+ PCIE_ASPM_BOTH = 3,
+};
+
unsigned int pciexp_scan_bus(struct bus *bus, unsigned int min_devfn,
unsigned int max_devfn, unsigned int max);
unsigned int pciexp_scan_bridge(device_t dev, unsigned int max);