Fujitsu PCI Gigabit Ethernet User Manual page 29

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From the above example, instance number and driver name for each interface can be determined.
Device node of device tree
/pci@1,700000/pci@0/FJSV,e4ta@4
/pci@1,700000/pci@0/FJSV,e4ta@4,1
/pci@1,700000/pci@0,1/FJSV,e4ta@6
/pci@1,700000/pci@0,1/FJSV,e4ta@6,1
/pci@2,600000/pci@0/FJSV,e2sa@4
/pci@2,600000/pci@0/FJSV,e2sa@4,1
/pci@3,700000/pci@0/FJSV,e2ta@4
/pci@3,700000/pci@0/FJSV,e2ta@4,1
/pci@4,600000/pci@0/FJSV,e4tb@4
/pci@4,600000/pci@0/FJSV,e4tb@4,1
/pci@4,600000/pci@0,1/FJSV,e4tb@6
/pci@4,600000/pci@0,1/FJSV,e4tb@6,1
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The parent and unit-addresses from the example are shown below. The parent is the character string to the left of FJSV,e4ta@,
FJSV,e2sa@, FJSV,e2ta@, or FJSV,e4tb@. The unit-address is the number to the right of FJSV,e4ta@, FJSV,e2sa@, FJSV,e2ta@,
or FJSV,e4tb@.
name
parent
unit-address
name
parent
unit-address
fjgi
/pci@1,700000/pci@0
instance 0 is 4
instance 1 is 4,1
fjgi
/pci@2,600000/pci@0
instance 4 is 4
instance 5 is 4,1
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Instance number
0
1
2
3
4
5
6
7
8
9
10
11
SE0X7GQ1X
/pci@1,700000/pci@0,1
instance 2 is 6
instance 3 is 6,1
SE0X7GD2X
Driver name
fjgi
fjgi
fjgi
fjgi
fjgi
fjgi
fjgi
fjgi
fjgi
fjgi
fjgi
fjgi