Intel E810 VDA4T Series User Manual

Intel
®
Ethernet Network Adapter E810-XXVDA4T
User Guide
20 646265-004
5. Disable SMA2:
# echo 0 2 > /sys/class/net/$ETH/device/ptp/ptp*/pins/SMA2
# dmesg
[27158.812512] ice 0000:03:00.0: SMA1 <current_state> U.FL1 <current_state>
[27158.812512] ice 0000:03:00.0: SMA2 + U.FL2 disabled
Note: Users must first disable U.FL2, as it shares the same channel number.
6. Disable U.FL2:
# echo 0 2 > /sys/class/net/$ETH/device/ptp/ptp*/pins/U.FL2
# dmesg
[27158.812512] ice 0000:03:00.0: SMA1 <current_state> U.FL1 <current_state>
[27158.812512] ice 0000:03:00.0: SMA2 + U.FL2 disabled
Note: Users must first disable SMA2 as it shares the same channel number.
4.6 Recovered Clocks (G.8261 SyncE Support)
Recovered clocks can be configured using a special sysfs interface that is exposed by every port
instance. Writing to a sysfs under a given port automatically enables a recovered clock from a given
port that is valid for a current link speed.
A link speed change requires repeating the steps to enable the recovered clock.
If a port recovered clock is enabled and no higher-priority clock is enabled at the same time, the DPLL
starts tuning its frequency to the recovered clock reference frequency enabling G.8261 functionality.
There are two recovered clock outputs from the C827 PHY. Only one pin can be assigned to one of the
ports. Re-enabling the same pin on a different port automatically disables it for the previously-assigned
port.
1. To enable a recovered clock for a given Ethernet device run the following:
# echo <ena> <pin> > /sys/class/net/$ETH/device/phy/synce
where:
For example, to enable the higher-priority recovered clock from Port 0 and a lower-priority
recovered clock from Port 1, run the following:
# export ETH0=enp1s0f0
# export ETH1=enp1s0f1
# echo 1 0 > /sys/class/net/$ETH0/device/phy/synce
# dmesg
[27575.495705] ice 0000:03:00.0: Enabled recovered clock: pin C827_0-RCLKA
# echo 1 1 > /sys/class/net/$ETH1/device/phy/synce
# dmesg
[27575.495705] ice 0000:03:00.0: Enabled recovered clock: pin C827_0-RCLKB
ena: 0 = Disable the given recovered clock pin.
1 = Enable the given recovered clock pin.
pin: 0 = Enable C827_0-RCLKA (higher priority pin).
1 = Enable C827_0-RCLKB (lower priority pin).
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Intel E810 VDA4T Series Specifications

General

Brand	Intel
Model	E810 VDA4T Series
Category	Adapter
Language	English