linux-kernel - Re: [PATCH v2] dt-bindings: leds: Document "rc-feedback" trigger

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Message-ID: <23688435.6Emhk5qWAg@diego>
Date: Wed, 09 Oct 2024 18:50:54 +0200
From: Heiko Stübner <heiko@...ech.de>
To: Lee Jones <lee@...nel.org>
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
 linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] dt-bindings: leds: Document "rc-feedback" trigger

Hi Lee,

Am Mittwoch, 9. Oktober 2024, 16:48:36 CEST schrieb Lee Jones:
> On Mon, 07 Oct 2024, Heiko Stuebner wrote:
> 
> > Document the "rc-feedback" trigger which is used to control LEDs by
> > remote control device activity. This is an existing trigger used in
> > existing DTs, document it so validation of those DTs would pass.
> > 
> > It was originally introduced into the Linux kernel in 2013 with
> > commit 153a60bb0fac ("[media] rc: add feedback led trigger for rc keypresses")
> > 
> > Signed-off-by: Heiko Stuebner <heiko@...ech.de>
> > ---
> > changes in v2:
> > - put the entry in the correct position and comment above it (Pavel)
> > 
> >  Documentation/devicetree/bindings/leds/common.yaml | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
> > index bf9a101e4d42..9cd89f30fa7c 100644
> > --- a/Documentation/devicetree/bindings/leds/common.yaml
> > +++ b/Documentation/devicetree/bindings/leds/common.yaml
> > @@ -118,6 +118,8 @@ properties:
> >              # No trigger assigned to the LED. This is the default mode
> >              # if trigger is absent
> >            - none
> > +            # LED indicates remote control feedback
> > +          - rc-feedback
> 
> Is 'rc' a recognised and well known abbreviation for remote control?
> 
> How about we people some (look-up) time and say:
> 
>   - remote-control-feedback

The issue being that this exact trigger rc-feedback is in the kernel for
11 years already - see the commit link in the description, and used in
a number of boards in the wild since then.

So the naming-ship has sailed for a while now, and this change
"simply" documents the status quo. And judging from Rob's Ack
it looks like he's okay with the naming too.


Heiko