linux-kernel - Re: [PATCH] arm64: dts: allwinner: a64: olinuxino: add user red LED

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Message-ID: <20200331082606.GD21251@meh.true.cz>
Date:   Tue, 31 Mar 2020 10:26:06 +0200
From:   Petr Štetiar <ynezz@...e.cz>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Maxime Ripard <maxime@...no.tech>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: allwinner: a64: olinuxino: add user red LED

Chen-Yu Tsai <wens@...e.org> [2020-03-31 09:19:57]:

Hi,

> On Tue, Mar 31, 2020 at 1:53 AM Maxime Ripard <maxime@...no.tech> wrote:
> >
> > On Wed, Mar 25, 2020 at 09:59:24PM +0100, Petr Štetiar wrote:
> > > There is a red LED marked as `GPIO_LED1` on the silkscreen and connected
> > > to PE17 by default. So lets add this missing bit in the current hardware
> > > description.
> > >
> > > Signed-off-by: Petr Štetiar <ynezz@...e.cz>
> >
> > QUeued for 5.8, thanks!
> 
> The gpio-led binding seems to prefer "led-0" up to "led-f" (^led-[0-9a-f])
> as the child node name. This was recently brought to my attention. Do we
> want to follow suit here?

I can see following in Documentation/devicetree/bindings/leds/leds-gpio.yaml:

 patternProperties:
   # The first form is preferred, but fall back to just 'led' anywhere in the
   # node name to at least catch some child nodes.
   "(^led-[0-9a-f]$|led)":

So it seems like `led-0` is indeed preferred, should I send v2 or a new patch
as a fix on top of the previous one?

-- ynezz