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Re: [PATCH v3] net: ethernet: faraday: To support device tree usage.

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  Re: [PATCH v3] net: ethernet: faraday: To support device tree usage. Arnd Bergmann <arnd@arndb.de> - 2017-01-04 14:30 +0100

#1550774 — Re: [PATCH v3] net: ethernet: faraday: To support device tree usage.

On Wednesday, January 4, 2017 9:49:51 AM CET Greentime Hu wrote:
> On Tue, Jan 3, 2017 at 9:24 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> 
> > On Tuesday, January 3, 2017 2:05:47 PM CET Greentime Hu wrote:
> > > ​I am not sure if atmac and moxa-art are exactly hardware compatible
> > though
> > > they are based on faraday ftmac.
> > > It may be better if we use 2 different device tree binding documents to
> > > describe for these 2 different drivers to use.
> >
> > They are probably slightly different, but close enough to have the same
> > binding document, as there is no technical reason to have two separate
> > drivers for them. The binding should be about the hardware type, not the
> > way that Linux currently implements the drivers.
> >
> >         Arnd
> >
> >
> OK.
> 
> How about this?
> 
> rename
> Documentation/devicetree/bindings/net/moxa,moxart-mac.txt
> to
> Documentation/devicetree/bindings/net/faraday,ftmac.txt
> 
> and the content to
> Faraday Ethernet Controller

Sounds good. Note that you can use 'git patch -M' to produce
this as a renaming patch.

> 
> Required properties:
> 
> - compatible : Must be "moxa,moxart-mac" or "andestech,atmac" or
> "faraday,ftmac"

I'd write this as

	compatible: Must contain "faraday,ftmac", as well as one of
	            the SoC specific identifiers:
			"andestec,atmac"
			"moxa,moxart-mac"

This makes it easier to extend, plus it makes the generic string
mandatory.

	Arnd

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