• Mark Rutland's avatar
    Docs: dt: Add PCI MSI map bindings · b531566e
    Mark Rutland authored
    Currently msi-parent is used by a few bindings to describe the
    relationship between a PCI root complex and a single MSI controller, but
    this property does not have a generic binding document.
    
    Additionally, msi-parent is insufficient to describe more complex
    relationships between MSI controllers and devices under a root complex,
    where devices may be able to target multiple MSI controllers, or where
    MSI controllers use (non-probeable) sideband information to distinguish
    devices.
    
    This patch adds a generic binding for mapping PCI devices to MSI
    controllers. This document covers msi-parent, and a new msi-map property
    (specific to PCI*) which may be used to map devices (identified by their
    Requester ID) to sideband data for each MSI controller that they may
    target.
    Acked-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
    Acked-by: default avatarRob Herring <robh@kernel.org>
    Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
    Signed-off-by: default avatarDavid Daney <david.daney@cavium.com>
    Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
    b531566e
pci-msi.txt 5.05 KB