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2014
congatec
AG
TS87m13
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11.4.4.1
PCI Express Settings Submenu
Feature
Options
Description
Relaxed Ordering
Disabled
Enabled
Enable or disable PCI Express device relaxed ordering.
Extended Tag
Disabled
Enabled
If enabled a device may use an 8-bit tag filed as a requester.
No Snoop
Disabled
Enabled
Enable or disable PCI Express device 'No Snoop' option.
Maximum Payload
Auto
128 Bytes
256 Bytes
512 Bytes
1024 Bytes
2048 Bytes
4096 Bytes
Set maximum payload of PCI Express devices or allow system BIOS to select the value.
Maximum Read Request
Auto
128 Bytes
256 Bytes
512 Bytes
1024 Bytes
2048 Bytes
4096 Bytes
Set maximum read request size of PCI Express devices or allow system BIOS to select the value.
ASPM
Disabled
Auto
Force L0s
PCI Express Active State Power Management settings.
Extended Synch
Disabled
Enabled
If enabled, the generation of extended PCI Express synchronization patterns is allowed.
Link Training Retry
Disabled, 2, 3,
5
Defines number of retry attempts software will take to retrain the link if previous training attempt was unsuccessful.
Link Training Timeout (us)
10-10000
Default : 100
Defines number of microseconds software will wait before polling link training bit in the link status register. Value ranges
from 10 to 10000 us.
Unpopulated Links
Keep Link On
Disabled
In order to save power, software will disable unpopulated PCI Express links, if this option is set to disabled.
Restore PCIe Registers
Enabled
Disabled
On non-PCI Express aware operating systems some devices may not be re-initialized correctly after S3. Setting this node
to Enabled restores PCI Express configuration on S3 resume.
Warning: Enabling this may cause issues with other hardware after S3 resume.
