[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <YW4n7hUIEB320dFv@lunn.ch>
Date: Tue, 19 Oct 2021 04:05:34 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Robert Marko <robert.marko@...tura.hr>
Cc: Rob Herring <robh@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <bgolaszewski@...libre.com>,
Lee Jones <lee.jones@...aro.org>,
Philipp Zabel <p.zabel@...gutronix.de>,
"open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
devicetree <devicetree@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Luka Perkov <luka.perkov@...tura.hr>, jmp@...phyte.org,
Paul Menzel <pmenzel@...gen.mpg.de>,
Donald Buczek <buczek@...gen.mpg.de>
Subject: Re: [PATCH v6 5/6] dt-bindings: mfd: Add Delta TN48M CPLD drivers
bindings
> > > > + GPIO controller module provides GPIO-s for the SFP slots.
> > > > + It is split into 3 controllers, one output only for the SFP TX disable
> > > > + pins, one input only for the SFP present pins and one input only for
> > > > + the SFP LOS pins.
Late to the conversation, so i might be asking questions already
asked...
So the PLD has restrictions? You have a collection of GPOs and a
collection of GPIs? You don't have an GPIOs?
> > > > +
> > > > +properties:
> > > > + compatible:
> > > > + enum:
> > > > + - delta,tn48m-gpio-sfp-tx-disable
> > > > + - delta,tn48m-gpio-sfp-present
> > > > + - delta,tn48m-gpio-sfp-los
Do these names have any real significant? Are you really forced to
connect the SFP cage in this dedicated manor? Is there any reason why
i cannot use a GPO to control an LED? A GPI for a button?
Andrew
Powered by blists - more mailing lists