[PATCH v2 1/2] i2c-core: dt: Pick i2c bus number from i2c alias if present

Olof Johansson olof at lixom.net
Tue Jan 15 01:34:25 EST 2013

On Mon, Jan 14, 2013 at 10:53:21AM -0800, Doug Anderson wrote:
> This allows you to get the equivalent functionality of
> i2c_add_numbered_adapter() with all data in the device tree and no
> special case code in your driver.  This is a common device tree
> technique.
> For quick reference, the FDT syntax for using an alias to provide an
> ID looks like:
>   aliases {
>     i2c0 = &i2c_0;
>     i2c1 = &i2c_1;
>   };
> Signed-off-by: Doug Anderson <dianders at chromium.org>
> Acked-by: Haojian Zhuang <haojian.zhuang at gmail.com>

The call path for i2c_add_numbered_adapter() with nr == -1 is a little
awkward now, but I don't see much how it can be improved much.

Acked-by: Olof Johansson <olof at lixom.net>


More information about the linux-arm-kernel mailing list