Hi Olof,
>> 2. record the I2c name in the dts tree, either as seperate tag (like
>> linux,i2c-name="<i2c-name>")
>> or as additional compatible entry (like compatible="...",
>> "linux,<i2c-name>").
>
> I have to say no on this one. The device tree is not supposed to know
> about how linux uses devices, there are firmwares out there that don't
> use DTS for thier device trees, etc.
I still believe this this could be done for embedded devices which are usually
booted
via wrapper or U-Boot as those devices will most probably use the most exotic
I2c devices
out there (e.g. home-grown devices used by stbs). However, I'm not an device
tree expert.
>> 3. use a glue layer with a translation map.
>
> In my opinion this is an OK solution since the same information has to
> be added somewhere already anyway -- eiither to the drivers or to this
> translation table. It should of course be an abstacted shared table,
> preferrably contained under the i2c source directories since several
> platforms and architectures might share them.
I could think of a mixture between 2. and 3.:
Using the compatible attribute with the manufacturer stripped off as I2c name
by default
and using an exception table. For now, the struct i2c_driver_device would
currently only
need one entry ("dallas,ds1374", "rtc-ds1374").
Thanks,
Jochen
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