Re: [PATCH RFC v4 07/10] dt-bindings: net: add binding for QCA7000 UART

[Rob Herring]

On Tue, Mar 28, 2017 at 06:18:03PM +0200, Stefan Wahren wrote:
> Am 27.03.2017 um 22:30 schrieb Rob Herring:
> > On Mon, Mar 27, 2017 at 8:37 AM, Stefan Wahren <stefan.wahren@xxxxxxxx> wrote:
> >> This is the serdev binding for the QCA7000 UART driver (Ethernet over UART).
> >>
> >> Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxx>
> >> ---
> >>
> >> According to this binding are still some questions:
> >>
> >> Where should be the optional hardware flow control defined (at master or slave side)?
> > Probably should be in the slave side. We already have uart-has-rtscts
> > and rts/cts-gpios for the UART. Those mean we have RTS/CTS, but not
> > necessarily that we want to enable them.
> >
> > In many cases, the driver may know what it needs.
> 
> Like all the other UART settings the hardware flow control can be
> configured in the QCA7000 firmware and the driver can't detect it.
> 
> Property suggestion for the slave side:
> 
> use-rtscts

Okay.

> >> Is it okay to have two bindings (qca-qca7000-spi and qca-qca7000-uart) or should they be merged?
> > Are they mutually-exclusive or both are used at the same time?
> 
> They are mutually-exclusive because they use the same pins.
> 
> >  What
> > are the dependencies between the interfaces?
> 
> Except they uses the same pins of the QCA7000, i can't see any dependency.

I think they should be a single doc.

Rob