> >> Frankly, I am not a big fan of converting board files if we cannot test
> >> the changes.
> > 
> > So, if no one is using that old boards, should we really take care
> > more than just compile test?
> > 
> > P.S. Legacy platform data makes a burden of development nowadays.
> > Built-in device properties API (as a part of Unified Device
> > Properties) is exactly for getting rid of legacy stuff and make things
> > much cleaner.
> 
> We could probably go with an approach of making the device properties 
> the default which would suit the new style and leave the platform_data 
> to override things if it is present.
> 
> If/when the older platforms go away we can drop struct 
> i2c_pca9564_pf_platform_data.

I don't have a super strong opinion, so we can discuss this for 4.14.
For 4.13, I picked the two easy patches already. Thanks!