From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Chris Packham
<Chris.Packham-6g8wRflRTwXFdCa3tKVlE6U/zSkkHjvu@public.gmane.org>
Cc: "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"florian-p3rKhJxN3npAfugRpC6u6w@public.gmane.org"
<florian-p3rKhJxN3npAfugRpC6u6w@public.gmane.org>,
"davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org"
<davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>,
"linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org"
<linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Subject: Re: Associating nodes with phandles for pci devices
Date: Fri, 23 Jan 2015 20:15:06 +0100 [thread overview]
Message-ID: <2275507.PY4WZcxUrf@wuerfel> (raw)
In-Reply-To: <9bcf67ede60f4567a396c05578cfceb7-5g7mGxlPNYb6GjIOKuZY+ItlCAj8ZROq@public.gmane.org>
On Friday 23 January 2015 19:02:33 Chris Packham wrote:
> Hi,
>
> I'm working on a new board that has a marvell,dsa switch. Similar to the kirkwood-mv88f6281gtw-ge board. However the major difference is that instead of being connected to an integrated Ethernet port it is connected via a PCI-e Ethernet port (basically a NIC hardwired onto the board).
>
> Generally you don't need to define PCI devices in the .dts because the bus is scanned at run time and the method for identifying devices is well defined. But to satisfy the marvell,dsa binding[1] I need to tell it the Ethernet port it is connected to. The answer might be in the PCI bindings but the urls in the documentation[2] don't appear to be valid anymore.
>
> Is it possible to enumerate PCI devices in the .dts? Or is there a way of satisfying the dsa requirements without knowing the Ethernet device?
>
In general, it is possible, and we do that on PowerPC, but it may be that
there are parts missing on ARM and you have to try it out.
In particular, you need to know the address of the PCI device and then
create a device node that will be associated with the pci_dev->dev.of_node
pointer.
Arnd
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2015-01-23 19:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-23 19:02 Associating nodes with phandles for pci devices Chris Packham
[not found] ` <9bcf67ede60f4567a396c05578cfceb7-5g7mGxlPNYb6GjIOKuZY+ItlCAj8ZROq@public.gmane.org>
2015-01-23 19:15 ` Arnd Bergmann [this message]
2015-01-23 19:38 ` Chris Packham
[not found] ` <alpine.DEB.2.10.1501240828280.14228-VJzQ50X1/JKjhWACt5bsBotlCAj8ZROq@public.gmane.org>
2015-01-23 22:40 ` Florian Fainelli
[not found] ` <54C2CDE6.8090400-p3rKhJxN3npAfugRpC6u6w@public.gmane.org>
2015-03-08 22:01 ` Chris Packham
[not found] ` <54FCC6AC.4030202-6g8wRflRTwXFdCa3tKVlE6U/zSkkHjvu@public.gmane.org>
2015-03-08 22:42 ` Arnd Bergmann
2015-03-08 23:03 ` Chris Packham
[not found] ` <54FCD53D.7080700-6g8wRflRTwXFdCa3tKVlE6U/zSkkHjvu@public.gmane.org>
2015-03-09 3:40 ` Florian Fainelli
[not found] ` <CAGVrzcYF266X-mUsfPtAr_jjJ3JW-TTHrKkznsnCCfrCzuf+qw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-09 5:19 ` Chris Packham
2015-01-26 10:57 ` Arnd Bergmann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2275507.PY4WZcxUrf@wuerfel \
--to=arnd-r2ngtmty4d4@public.gmane.org \
--cc=Chris.Packham-6g8wRflRTwXFdCa3tKVlE6U/zSkkHjvu@public.gmane.org \
--cc=davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org \
--cc=devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=florian-p3rKhJxN3npAfugRpC6u6w@public.gmane.org \
--cc=linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).