linux-kernel - Re: [PATCH v5 03/26] dt-bindings: leds: Add LED

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Message-ID: <CAMuHMdXkQCVXdsbS1Tf+7wkafJ4JxhxXeh4R7OWOz5uGs-jL5Q@mail.gmail.com>
Date:   Fri, 15 Nov 2019 14:01:50 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Jacek Anaszewski <jacek.anaszewski@...il.com>
Cc:     linux-leds@...r.kernel.org,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Pavel Machek <pavel@....cz>, Rob Herring <robh@...nel.org>,
        dtor@...gle.com, Guenter Roeck <linux@...ck-us.net>,
        Dan Murphy <dmurphy@...com>,
        Baolin Wang <baolin.wang@...aro.org>,
        Daniel Mack <daniel@...que.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Oleh Kravchenko <oleg@....org.ua>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Simon Shields <simon@...eageos.org>
Subject: Re: [PATCH v5 03/26] dt-bindings: leds: Add LED_FUNCTION definitions

Hi Jacek,

On Sun, Jun 9, 2019 at 9:09 PM Jacek Anaszewski
<jacek.anaszewski@...il.com> wrote:
> Add initial set of common LED function definitions.
>
> Signed-off-by: Jacek Anaszewski <jacek.anaszewski@...il.com>

> --- a/include/dt-bindings/leds/common.h
> +++ b/include/dt-bindings/leds/common.h
> @@ -30,4 +31,45 @@
>  #define LED_COLOR_ID_IR                7
>  #define LED_COLOR_ID_MAX       8
>
> +/* Standard LED functions */
> +#define LED_FUNCTION_ACTIVITY "activity"

What's the appropriate function for "general purpose" or "user" LEDs on
development boards, where the LEDs don't have fixed functions, unlike
on real products?
Perhaps just LED_FUNCTION_INDICATOR?

I noticed your very initial submission defined LED_FUNCTION_USER "user".
I couldn't find an explanation for the rationale behind its removal in later
revisions, or any discussion asking for that.

Thanks!

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds