Changes between Version 9 and Version 10 of venice/PCIe


Ignore:
Timestamp:
09/10/2024 05:42:54 PM (7 months ago)
Author:
Tim Harvey
Comment:

added note about MSI interrupt resources

Legend:

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  • venice/PCIe

    v9 v10  
    7171Some devices/drivers require MSI interrupts and some require legacy interrupts (ath9k radio devices come to mind which require legacy interrupts).
    7272
     73MSI allows up to 32 interrupts where-as MSI-X allows up to 2048 interrupts. Note however that the IMX8M SoC's only support MSI - if a device supports MSI-X the interrupts will fall-back to MSI.
     74
    7375The Designware PCIe core (used on IMX6/IMX8M) works as such as soon as any MSI interrupt is enabled, the core no longer forwards legacy IRQs so if any card in your system needs legacy interrupts you need to disable MSI with {{{pci=nomsi}}} in uboot:
    7476{{{