linux-kernel - Re: [PATCH RFC] net: dsa: mv88e6xxx: Support LED control

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Date:   Sun, 26 Nov 2023 21:11:28 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Christian Marangi <ansuelsmth@...il.com>,
        Tim Harvey <tharvey@...eworks.com>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH RFC] net: dsa: mv88e6xxx: Support LED control

On Sun, Nov 26, 2023 at 5:45 PM Andrew Lunn <andrew@...n.ch> wrote:
> On Sun, Nov 26, 2023 at 12:46:03AM +0100, Linus Walleij wrote:
> > On Thu, Nov 23, 2023 at 5:13 PM Andrew Lunn <andrew@...n.ch> wrote:
> >
> > > What i would really like to see happen is that the DSA core handles
> > > the registration of the LEDs, similar to how phylib does. The DT
> > > binding should be identical for all DSA devices, so there is no need
> > > for each driver to do its own parsing.
> > >
> > > There are some WIP patches at
> > >
> > > https://github.com/lunn/linux.git leds-offload-support-reduced-auto-netdev
> > >
> > > which implement this. Feel free to make use of them.
> >
> > Oh it's quite a lot of patches, I really cannot drive that because there are
> > so many things about them that I don't understand the thinking behind...
> > But I like what I see!
>
> O.K. Let me dust them off, rebase them on net-next and see what is
> missing.

Thanks Andrew, appreciated!

I'll be happy to rebuild it on top of what you put as the baseline,
hopefully it will help Christian with the qca8k support as well?

> You have some fibre things i don't have. I don't have a
> machine with fibre so i cannot test that.

I can test that, the way I check for its presence is through device tree looking
for an "sfp" phandle, AFAICT I don't see that the hardware can tell be
when there
is a fiber connected, but alas I don't have any datasheet.

Yours,
Linus Walleij