Linux MDIO register access
phytool read IFACE/ADDR/REG
phytool write IFACE/ADDR/REG <0-0xffff>
phytool print IFACE/ADDR[/REG]
where
ADDR := C22 | C45
C22 := <0-0x1f>
C45 := <0-0x1f>:<0-0x1f>
REG := <0-0x1f>
Note: Not all MDIO drivers support the port:device Clause 45 address
format.
The read and write commands are simple register level
accessors. The print command will pretty-print a register. When
using the print command, the register is optional. If left out, the
most common registers will be shown.
~ # phytool read eth4/0/4
0x0de1
~ # phytool print eth0/0
ieee-phy: id:0x01410eb1
ieee-phy: reg:BMCR(0x00) val:0x1140
flags: -reset -loopback +aneg-enable -power-down -isolate -aneg-restart -collision-test
speed: 1000-full
ieee-phy: reg:BMSR(0x01) val:0x7949
capabilities: -100-b4 +100-f +100-h +10-f +10-h -100-t2-f -100-t2-h
flags: +ext-status -aneg-complete -remote-fault +aneg-capable -link -jabber +ext-register
Marvell Link Street register access
mv6tool read LOCATION/REG
mv6tool write LOCATION/REG <0-0xffff>
mv6tool print LOCATION[/REG]
mv6tool print IFACE
where
LOCATION := IFACE/<port|phy> | DEV/<ADDR|phyN|portN|globalG|serdes>
DEV := <0-0x1f>
ADDR := <0-0x1f>
N := <0-0xa>
G := <0-2>
REG := <0-0x1f>
The read and write commands are simple register level
accessors. The print command will pretty-print a register. When
using the print command, the register is optional. If left out, the
most common registers will be shown.
~ # mv6tool 1/global1/0
mv6: model:mv88e6097 dev:1 global:1
mv6: reg:00 val:0xc800
~ # mv6tool print eth1-1
mv6: model:mv88e6352 dev:0 port:1
mv6: reg:PS(0x00) val:0x100f
flags: -pause-en -my-pause +phy-detect -link -eee -tx-paused -flow-ctrl
speed: 10-half
mode: 0xf
mv6: reg:PC(0x04) val:0x1414
flags: -router-header +igmp-snoop -vlan-tunnel -tag-if-both
egress-mode: 01, untagged
frame-mode: 00, normal
initial-pri: 01, tag prio
egress-floods: 01, allow UC
port-state: 00, disabled
phytool is developed and maintained by Tobias Waldekranz.
Please file bug fixes and pull requests at GitHub