On Thu, Nov 22, 2012 at 2:26 AM, Doug Anderson [off-list ref] 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@chromium.org>
CC: Mark Brown <redacted>

---
 drivers/i2c/i2c-core.c |  105 +++++++++++++++++++++++++++++++++++-------------
 1 files changed, 77 insertions(+), 28 deletions(-)

Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>