linux-kernel - Re: [PATCH] i2c-i801: Add device tree support

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Message-ID: <20120818121628.GB12839@pengutronix.de>
Date:	Sat, 18 Aug 2012 14:16:28 +0200
From:	Wolfram Sang <w.sang@...gutronix.de>
To:	Thierry Reding <thierry.reding@...onic-design.de>
Cc:	Jean Delvare <khali@...ux-fr.org>, Ben Dooks <ben-linux@...ff.org>,
	Daniel Kurtz <djkurtz@...omium.org>, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c-i801: Add device tree support

On Sat, Aug 18, 2012 at 01:17:45PM +0200, Thierry Reding wrote:
> On Sat, Aug 18, 2012 at 11:48:46AM +0200, Wolfram Sang wrote:
> > On Wed, Aug 08, 2012 at 09:06:47AM +0200, Thierry Reding wrote:
> > > This commit adds support for probing slave devices parsed from the
> > > device tree.
> > > 
> > > Signed-off-by: Thierry Reding <thierry.reding@...onic-design.de>
> > 
> > How are the devicetree nodes of the slaves connected to this PCI device
> > which should not have a node itself?
> 
> The matching is done by pci_set_of_node() and pci_set_bus_of_node().
> The latter will eventually call pcibios_get_phb_of_node(). What makes
> you say that PCI devices shouldn't have nodes themselves?

I thought to recall that busses which can be probed at runtime should
not have nodes but should be probed. Maybe that was wrong. Can you point
me to a dts-file with an example?

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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