Re: [PATCH] i2c: core: don't try to OF populate DDC i2c buses

[Lucas Stach <l.stach@pengutronix.de>]

Am Mittwoch, den 30.11.2016, 15:54 +0200 schrieb Vladimir Zapolskiy:
> Hello Lucas,
> 
> On 11/30/2016 01:50 PM, Lucas Stach wrote:
> > DDC buses are manually managed by their consumers to communicate
> > with the display. There is no need to try to populate OF childs.
> > 
> > This gets rid of the device create failed warning caused by the
> > core trying to populate a DDC bus below a OF device, which has
> > other childs nodes, that aren't i2c devices.
> 
> what kind of devices on a DDC bus represended by children nodes
> do you reference here?

None. The device registering the DDC i2c adapter might have an of_node.
The children of this device are not i2c devices, but for example port
nodes for the of_graph binding.

The same issue can be worked around if we make it explicit by placing an
"i2c-bus" subnode with no children into the parent device OF node. But
as the OF probing of devices on a DDC bus just doesn't make sense I
figured it would be good to just skip all this.

Regards,
Lucas