RE: [PATCH 2/2] PCI:designware:Fix iATU programming for cfg1, io and mem viewport

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Hello Kishon,

> -----Original Message-----
> From: Kishon Vijay Abraham I [mailto:kishon@xxxxxx]
> Sent: Thursday, February 20, 2014 5:43 PM
> To: Mohit KUMAR DCG; jg1.han@xxxxxxxxxxx
> Cc: Ajay KHANDELWAL; Bjorn Helgaas; spear-devel; linux-
> pci@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH 2/2] PCI:designware:Fix iATU programming for cfg1, io
> and mem viewport
> 
> Hi Mohit,
> 
> On Thursday 20 February 2014 05:28 PM, Mohit KUMAR DCG wrote:
> > Hello Kishon,
> >
> >> -----Original Message-----
> >> From: Kishon Vijay Abraham I [mailto:kishon@xxxxxx]
> >> Sent: Thursday, February 20, 2014 5:08 PM
> >> To: Mohit KUMAR DCG; jg1.han@xxxxxxxxxxx
> >> Cc: Ajay KHANDELWAL; Bjorn Helgaas; spear-devel; linux-
> >> pci@xxxxxxxxxxxxxxx
> >> Subject: Re: [PATCH 2/2] PCI:designware:Fix iATU programming for
> >> cfg1, io and mem viewport
> >>
> >> Hi,
> >>
> >> On Thursday 20 February 2014 10:52 AM, Mohit Kumar wrote:
> >>> This patch correct iATU programming for cfg1, io and mem viewport.
> >>> Enable ATU only after configuring it.
> >>
> >> Does this patch actually fixes device enumeration behind a PCIe-pci
> >> bridge or this is more of cleaning up the sequence?
> >>
> > - This patch corrects ATU programming sequence. I am not aware of any
> > such issue with current driver. Pls specify  which bridge do you use in your
> setup and what is the problem?
> 
> I tried with card [1], it had a PLX bridge chip. It couldn't read the configuration
> space of the device connected to the PCIe-PCI bridge.
> 
- I don’t have the mentioned card with me, but we are successfully using Lecroy PTC switch
 and SIL3124-2CB364 PCI-X compatible RAID card.

May be Jingoo or others can also comment if they are using PCI bridge card.

Thanks
Mohit

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