[U-Boot] [PATCH 16/18] malta: setup PIIX4 interrupt route

[Paul Burton <paul.burton@imgtec.com>]

On 11/11/13 13:33, Marek Vasut wrote:
> Dear Paul Burton,
>
>> On 10/11/13 20:09, Marek Vasut wrote:
>>> Dear Paul Burton,
>>>
>>>> Without setting up the PIRQ[A:D] interrupt routes, PCI interrupts will
>>>> be left disabled. Linux does not set up this routing but relies upon it
>>>> having been set up by the bootloader, reading back the IRQ lines which
>>>> the PIRQ[A:D] signals have been routed to.
>>>
>>> Did you also submit a fix to Linux guys?
>>>
>>> Best regards,
>>> Marek Vasut
>>
>> No, I haven't. Although Linux is reliant upon these values having been
>> programmed it's quite clear from reading its code that that depence is
>> intentional. It explicitely reads the route setup by the bootloader
>> rather than clobbering it, and to me that does make sense in this case.
>
> Can this setup not be passed via a well-designed DT binding then?

I'm sure the information could be passed via DT but the Malta board 
currently doesn't use DT at all either in Linux or U-boot, and I don't 
have the time right now to convert them both to DT.

>
>> However the pcnet32 ethernet driver seems to be reliant upon the
>> interrupt and doesn't handle the case of a PCI device with no assigned
>> interrupt, so I'll send a patch to fail its probe in that case shortly.
>
> Thanks!
>
> Best regards,
> Marek Vasut
>

Thanks,
     Paul