linux-kernel - Re: [PATCH net-next 0/2] net: phy: mxl-gpy: Add mode for 2 leds

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Date:   Thu, 22 Sep 2022 14:00:12 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Michael Walle <michael@...le.cc>
Cc:     marcus.carlberg@...s.com, davem@...emloft.net,
        devicetree@...r.kernel.org, edumazet@...gle.com,
        hkallweit1@...il.com, kernel@...s.com, kuba@...nel.org,
        linux-kernel@...r.kernel.org, linux@...linux.org.uk,
        lxu@...linear.com, netdev@...r.kernel.org, pabeni@...hat.com
Subject: Re: [PATCH net-next 0/2] net: phy: mxl-gpy: Add mode for 2 leds

On Thu, Sep 22, 2022 at 10:05:29AM +0200, Michael Walle wrote:
> Hi,
> 
> > GPY211 phy default to using all four led pins.
> > Hardwares using only two leds where led0 is used as the high
> > network speed led and led1 the low network speed led will not
> > get the correct behaviour since 1Gbit and 2.5Gbit will not be
> > represented at all in the existing leds.
> 
> I might be wrong, but PHY LED bindings should be integrated with/using
> the LED subsystem. Although I didn't see any development regarding this
> for a long time.
> 
> That being said, it seems you are adding a new (DT) property which
> just matches your particular hardware design, no?

Thanks Michael

Replying to this was on my TODO list. We have NACKed patches like this
for a few years now, wanting the Linux LED subsystem be used to
configure PHY LEDs. The patches to implement the core of that
sometimes makes some progress, then goes dormant for a while. The last
effort was getting close to being ready. Maybe the needs for this
driver can help get them finished?

       Andrew