Messages in this thread | | | Date | Tue, 19 Oct 2021 04:05:34 +0200 | From | Andrew Lunn <> | Subject | Re: [PATCH v6 5/6] dt-bindings: mfd: Add Delta TN48M CPLD drivers bindings |
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> > > > + 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
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