On Mon, Jun 10, 2024 at 03:37:35PM -0600, Rob Herring wrote: > On Thu, Jun 06, 2024 at 02:26:12PM -0500, Bjorn Helgaas wrote: > > On Mon, May 27, 2024 at 06:14:44PM +0200, Herve Codina wrote: > > > PCI devices and bridges DT nodes created during the PCI scan are created > > > with the interrupt-map property set to handle interrupts. > > > > > > In order to set this interrupt-map property at a specific level, a > > > phandle to the parent interrupt controller is needed. On systems that > > > are not fully described by a device-tree, the parent interrupt > > > controller may be unavailable (i.e. not described by the device-tree). > > > > > > As mentioned in the [1], avoiding the use of the interrupt-map property > > > and considering a PCI device as an interrupt controller itself avoid the > > > use of a parent interrupt phandle. > > > > > > In that case, the PCI device itself as an interrupt controller is > > > responsible for routing the interrupts described in the device-tree > > > world (DT overlay) to the PCI interrupts. > > > > > > Add the 'interrupt-controller' property in the PCI device DT node. > > > > > > [1]: https://lore.kernel.org/lkml/CAL_Jsq+je7+9ATR=B6jXHjEJHjn24vQFs4Tvi9=vhDeK9n42Aw@xxxxxxxxxxxxxx/ > > > > > > Signed-off-by: Herve Codina <herve.codina@xxxxxxxxxxx> > > > > No objection from me, but I'd like an ack/review from Rob. > > Given it is more DT patches in the series, how about I take them and > this one with your ack instead? Sure. There's very little PCI content here, so I didn't plan to take them; I just thought this needed at least your ack :) Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
