[PATCH] bcma: support for PCIe Gen 2 as host platform

Rafał Miłecki
2014-07-07T19:37:10Z

On 7 July 2014 11:38, Rafa? Mi?ecki <zajec5@gmail.com> wrote:
> On 6 July 2014 14:19, Arend van Spriel <arend@broadcom.com> wrote:
>> On 06-07-14 13:11, Rafa? Mi?ecki wrote:
>>> Signed-off-by: Rafa? Mi?ecki <zajec5@gmail.com>
>>> ---
>>> I got reply from Bjorn, that we should *not* depend on PCI_EXP_LNKCAP:
>>> http://marc.info/?l=linux-pci&m=140457671930896&w=2
>>>
>>> So the change since RFC is adding a list of PCIe 1.0 and 2.0 devices.
>>> Use PCI_EXP_LNKCAP only as a fallback, in case someone tries sth like:
>>> echo "14e4 4360" > /sys/bus/pci/drivers/bcma-pci-bridge/new_id
>>
>> Do you have to know this before or after enumerating the cores? They
>> have a different core id, right?
>
> Sure, having a list of cores would allow me to determine PCIe revision.
>
> Unfortunately right now we have only this single bcma_bus_register
> call that does both: scanning and initialization. I'd need to first
> scan cores, then determine PCIe revision and finally initialize cores.
>
> I wonder if I could try to use bcma_bus_scan_early that was developer
> for SoC needs...

John: please kindly drop this patch for now. All other bcma/b43
patches are unaffected.

--
Rafa?