On Wed, Aug 19, 2020 at 11:42:27PM +0800, Tzung-Bi Shih wrote:

> But I found struct mfd_cell also contains member .of_compatible.  What
> is the difference if we use compatible string (as is) for this device
> instead of falling back to use device name to match?

That's for binding the MFD subdevice to an OF node, you don't need to do
that for a device like this - you can just use the of_node of the parent
to get at the properties.