[U-Boot] i.mx6q PCIE

[U-Boot] i.mx6q PCIE

[Ian Molton]

Hi folks,

I'm attempting to bring up a custom board with an i.mx6q on it.

I've added support for PCIe and E1000 ethernet, and the PCI bus scans,
showing my card (Intel i210 chip)

The E1000 driver bombs out during init, however.

I've tried inserting code to repeatedly read the BAR for 4k (and print a
".") after bus mastering is enabled, and this manages about 70 cycles
before I no longer see serial output.

if I reset the board, I may or may not get any "." printed, and
sometimes I get completely other characters printed (perhaps serial is
losing sync?).

Anyone have any ideas ?

-Ian

[U-Boot] i.mx6q PCIE

[Fabio Estevam]

[Adding more folks on Cc]

On Mon, Jan 5, 2015 at 3:35 PM, Ian Molton <imolton@ad-holdings.co.uk> wrote:
> Hi folks,
>
> I'm attempting to bring up a custom board with an i.mx6q on it.
>
> I've added support for PCIe and E1000 ethernet, and the PCI bus scans,
> showing my card (Intel i210 chip)
>
> The E1000 driver bombs out during init, however.
>
> I've tried inserting code to repeatedly read the BAR for 4k (and print a
> ".") after bus mastering is enabled, and this manages about 70 cycles
> before I no longer see serial output.
>
> if I reset the board, I may or may not get any "." printed, and
> sometimes I get completely other characters printed (perhaps serial is
> losing sync?).
>
> Anyone have any ideas ?

York Sun has also reported issues with this driver:
http://lists.denx.de/pipermail/u-boot/2014-October/190602.html

[U-Boot] i.mx6q PCIE

[York Sun]

On 01/05/2015 12:27 PM, Fabio Estevam wrote:
> [Adding more folks on Cc]
> 
> On Mon, Jan 5, 2015 at 3:35 PM, Ian Molton <imolton@ad-holdings.co.uk> wrote:
>> Hi folks,
>>
>> I'm attempting to bring up a custom board with an i.mx6q on it.
>>
>> I've added support for PCIe and E1000 ethernet, and the PCI bus scans,
>> showing my card (Intel i210 chip)
>>
>> The E1000 driver bombs out during init, however.
>>
>> I've tried inserting code to repeatedly read the BAR for 4k (and print a
>> ".") after bus mastering is enabled, and this manages about 70 cycles
>> before I no longer see serial output.
>>
>> if I reset the board, I may or may not get any "." printed, and
>> sometimes I get completely other characters printed (perhaps serial is
>> losing sync?).
>>
>> Anyone have any ideas ?
> 
> York Sun has also reported issues with this driver:
> http://lists.denx.de/pipermail/u-boot/2014-October/190602.html
> 

To clarify, the issue I had was solved by fixing the driver, commit
76f8cdb2036bf86ec7193ed13129797f0a32d13d.

York

[U-Boot] i.mx6q PCIE

[Ian Molton]

This commit is already in my branch, I'm afraid.

On 05/01/15 20:30, York Sun wrote:
> On 01/05/2015 12:27 PM, Fabio Estevam wrote:
>> [Adding more folks on Cc]
>>
>> On Mon, Jan 5, 2015 at 3:35 PM, Ian Molton <imolton@ad-holdings.co.uk> wrote:
>>> Hi folks,
>>>
>>> I'm attempting to bring up a custom board with an i.mx6q on it.
>>>
>>> I've added support for PCIe and E1000 ethernet, and the PCI bus scans,
>>> showing my card (Intel i210 chip)
>>>
>>> The E1000 driver bombs out during init, however.
>>>
>>> I've tried inserting code to repeatedly read the BAR for 4k (and print a
>>> ".") after bus mastering is enabled, and this manages about 70 cycles
>>> before I no longer see serial output.
>>>
>>> if I reset the board, I may or may not get any "." printed, and
>>> sometimes I get completely other characters printed (perhaps serial is
>>> losing sync?).
>>>
>>> Anyone have any ideas ?
>> York Sun has also reported issues with this driver:
>> http://lists.denx.de/pipermail/u-boot/2014-October/190602.html
>>
> To clarify, the issue I had was solved by fixing the driver, commit
> 76f8cdb2036bf86ec7193ed13129797f0a32d13d.
>
> York
>