netdev - Re: [PATCH 0/3] add dt configuration for dp83867 led modes

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Date:   Mon, 21 Nov 2022 00:35:19 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Tim Harvey <tharvey@...eworks.com>
Cc:     Ansuel Smith <ansuelsmth@...il.com>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        netdev@...r.kernel.org, Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Subject: Re: [PATCH 0/3] add dt configuration for dp83867 led modes

On Fri, Nov 18, 2022 at 11:57:00AM -0800, Tim Harvey wrote:
> On Fri, Nov 18, 2022 at 5:11 AM Andrew Lunn <andrew@...n.ch> wrote:
> >
> > > Andrew,
> > >
> > > I completely agree with you but I haven't seen how that can be done
> > > yet. What support exists for a PHY driver to expose their LED
> > > configuration to be used that way? Can you point me to an example?
> >
> > Nobody has actually worked on this long enough to get code merged. e.g.
> > https://lore.kernel.org/netdev/20201004095852.GB1104@bug/T/
> > https://lists.archive.carbon60.com/linux/kernel/3396223
> >
> > This is probably the last attempt, which was not too far away from getting merged:
> > https://patches.linaro.org/project/linux-leds/cover/20220503151633.18760-1-ansuelsmth@gmail.com/
> >
> > I seem to NACK a patch like yours every couple of months. If all that
> > wasted time was actually spent on a common framework, this would of
> > been solved years ago.
> >
> > How important is it to you to control these LEDs? Enough to finish
> > this code and get it merged?
> >
> 
> Andrew,
> 
> Thanks for the links - the most recent attempt does look promising.
> For whatever reason I don't have that series in my mail history so
> it's not clear how I can respond to it.

apt-get install b4

> Ansuel, are you planning on posting a v7 of 'Adds support for PHY LEDs
> with offload triggers' [1]?
> 
> I'm not all that familiar with netdev led triggers. Is there a way to
> configure the default offload blink mode via dt with your series? I
> didn't quite follow how the offload function/blink-mode gets set.

The idea is that the PHY LEDs are just LEDs in the Linux LED
framework. So read Documentation/devicetree/bindings/leds/common.yaml.
The PHY should make use of these standard DT properties, including
linux,default-trigger.

	Andrew