• Stephen Boyd's avatar
    irqchip/gic-v3: Ignore disabled ITS nodes · 95a25625
    Stephen Boyd authored
    On some platforms there's an ITS available but it's not enabled
    because reading or writing the registers is denied by the
    firmware. In fact, reading or writing them will cause the system
    to reset. We could remove the node from DT in such a case, but
    it's better to skip nodes that are marked as "disabled" in DT so
    that we can describe the hardware that exists and use the status
    property to indicate how the firmware has configured things.
    
    Cc: Stuart Yoder <stuyoder@gmail.com>
    Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com>
    Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Cc: Marc Zyngier <marc.zyngier@arm.com>
    Cc: Rajendra Nayak <rnayak@codeaurora.org>
    Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
    Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
    95a25625
irq-gic-v3-its-platform-msi.c 4.2 KB