On 16/08/2018 16:25:14+0200, Quentin Schulz wrote: > Hi Alexandre, > > On Tue, Aug 14, 2018 at 02:41:35PM +0200, Alexandre Belloni wrote: > > On 14/08/2018 08:49:53+0200, Quentin Schulz wrote: > > > Understood but it's an intermediate patch. Later (patch 8), the SerDes > > > muxing "controller" is added as a child to this node. There most likely > > > will be some others in the future (temperature sensor for example). > > > > > > Furthermore, there's already a simple-mfd without children in this file: > > > https://elixir.bootlin.com/linux/latest/source/Documentation/devicetree/bindings/mips/mscc.txt#L19 > > > > > > How should we handle this case? > > > > > > > There were child nodes in previous version of the binding. You can > > remove simple-mfd now. The useful registers that are not used by any > > drivers are gpr and chipid. > > > > And what about the use case I'm facing? I've got child nodes defined in > it but with a later patch (but they actually haven't made it to the > DT binding documentation, so that's for the next version of the patch > series). > I guess you should keep simple-mfd for hsio because it will have child nodes. -- Alexandre Belloni, Bootlin Embedded Linux and Kernel engineering https://bootlin.com