Re: [PATCH 2/2] dt-bindings: gpio: Add gpio-latch binding document

From: Sascha Hauer
Date: Mon Aug 29 2022 - 10:40:40 EST


Hi Linus,

On Fri, Aug 26, 2022 at 03:37:40PM +0200, Linus Walleij wrote:
> On Thu, Aug 25, 2022 at 11:41 AM Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> wrote:
>
> > This adds a binding for a GPIO multiplexer driver based on latches
> > connected to other GPIOs.
> >
> > Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
>
> Nice overall!
>
> > +++ b/Documentation/devicetree/bindings/gpio/gpio-latch.yaml
> > @@ -0,0 +1,83 @@
> > +%YAML 1.2
>
> No license?

Will add in v2.

>
> > + data-gpios:
> > + description: Array of GPIOs to be used as data GPIOs
>
> Hm I wanted to just call these "gpios" but that is maybe confusing.
> What about "latch-gpios"?

Hm, the clk input is used to latch the current state of the inputs to
the outputs, so "latch-gpios" might even be confused with the GPIO
routed to the clk unput of the latch. Overall, the whole thing is a
latch, so "latch-gpios" doesn't sound like a good name to distinguish
the different types of inputs of a latch. I still like data-gpios best
as these lines are described as "Data inputs" in my 74273 data sheet.

Sascha

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