[GIT PULL] Mediatek: 32-bit DT update for v4.15

[Arnd Bergmann]

On Fri, Nov 3, 2017 at 12:52 PM, Ryder Lee <ryder.lee at mediatek.com> wrote:
> On Fri, 2017-11-03 at 10:40 +0100, Arnd Bergmann wrote:
>> On Fri, Nov 3, 2017 at 2:37 AM, Ryder Lee <ryder.lee at mediatek.com> wrote:

>> This should have the exact same effect as what you have in your tree,
>> but if that works,
>> we can merge that version and try to figure out why the kernel thinks
>> they are different.
>
> I've tried this approach by using the 4-ports network card and got the
> result:
> pcieport 0000:00:01.0: assign IRQ: got 220
> pcieport 0000:00:01.0: assigning IRQ 220
> pcieport 0000:00:01.0: enabling device (0140 -> 0142)
> pcieport 0000:00:01.0: enabling bus mastering
> pcieport 0000:00:01.0: Signaling PME with IRQ 220
> ....
> igb 0000:01:00.0: assign IRQ: got 221
> igb 0000:01:00.0: assigning IRQ 221
> igb 0000:01:00.1: assign IRQ: got 221
> igb 0000:01:00.1: assigning IRQ 221
> igb 0000:01:00.2: assign IRQ: got 221
> igb 0000:01:00.2: assigning IRQ 221
> igb 0000:01:00.3: assign IRQ: got 221
> igb 0000:01:00.3: assigning IRQ 221
>
> I think slot 1 should share its IRQ (220) with every device in the
> hierarchy below this root port.

Agreed, that is what I expected, too. I've looked at the of_pci_irq.c
in more detail but couldn't come up with what happened. Can you
try running with this patch or something like that to figure out where
it takes the wrong turn?

https://pastebin.com/MrMzwcmw

     Arnd