lkml.org 
[lkml]   [2015]   [Oct]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH v7 5/6] Documentation: dt-bindings: pci: altera pcie device tree binding
From
On Sat, Oct 3, 2015 at 5:56 AM, Arnd Bergmann <arnd@arndb.de> wrote:
> On Friday 02 October 2015 15:53:44 Ley Foon Tan wrote:
>> > Strictly speaking, if you have undocumented bindings downstream that
>> > is your problem and we don't have to accept them as-is upstream. I'm
>> > not going to worry about that here.
>> >
>> >>> txs contains the config space?
>> >> It is not the config space, but a memory slave port.
>> >
>> > Then where is the config space? It should not be part of "ranges" is
>> > all I care about.
>> The config space is not part of "ranges". Our IP uses TLP packet to
>> access config space.
>>
>
> It took me a bit to figure out what you mean here. To save others
> from reading the source, here is what I found:
>
> * The config space is accessed indirectly through registers from the
> "cra" register range, which is the right approach according to the
> point that Rob made.
You are right.

> * hardware-wise this basically looks like bit-banged PCIe, which is
> both awesome and scary ;-)


\
 
 \ /
  Last update: 2015-10-05 05:41    [W:0.154 / U:0.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site