Changes between Version 6 and Version 7 of ventana/PCIe


Ignore:
Timestamp:
06/19/2018 04:06:08 PM (6 years ago)
Author:
Ryan Erbstoesser
Comment:

add in information about gen2

Legend:

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  • ventana/PCIe

    v6 v7  
    159159See [wiki:ventana/errata#hw14 Ventana errata HW14] for details on what board revisions have Gen2 capability.
    160160
     161To detect if Gen1 or Gen2 is being used, do not use the lspci command. This only shows the capability and not the actual activated version. To see the actual activated version, use the dmesg command with a grep, like so to see that Gen2 is disabled and the link is up :
     162{{{
     163root@ventana:~# dmesg | grep Link
     164[    0.271427] imx6q-pcie 1ffc000.pcie: Link: Gen2 disabled
     165[    0.271444] imx6q-pcie 1ffc000.pcie: Link up, Gen=1
     166[   11.502799] libphy: 2188000.ethernet:00 - Link is Up - 1000/Full
     167
     168}}}
     169
    161170The bus speed represents a theoretical maximum throughput and does not account for host processing speed or bus contention from multiple masters.
    162171