On Tue, Feb 12, 2019 at 04:40:10PM +0800, Baolin Wang wrote:

On Fri, 1 Feb 2019 at 21:05, Mark Brown [off-list ref] wrote:

quoted

You can just list all the individual device names in the of_match_table
for the MFD and then it can bind to any of them.  You can always map
them onto the same behaviour in the MFD driver if they are identical
from a software point of view.

If I understood correctly, as you suggested, we should add new
mfd_cell groups to list all different PMICs' device names. Something
like:

I do think this is a good idea (registering the components of the MFD
using mfd_cell), though it wasn't quite the point I was making.  Having
individual device names matters less for Linux-internal names like this.

But from my point, they are just some meaningless duplication, and
will waste lots of code there.

I was more thinking of the of_match table that has the IDs that appear
in DT - they're the one that's the ABI.  Look at something like wm8994
where the driver has several IDs listed in the main table then selects
function drivers based on that.