netdev - Re: [PATCH v3 6/8] net: dsa: hellcreek: Add PTP status LEDs

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Message-ID: <20200824225054.GL2403519@lunn.ch>
Date:   Tue, 25 Aug 2020 00:50:54 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Kurt Kanzenbach <kurt@...utronix.de>
Cc:     Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Richard Cochran <richardcochran@...il.com>,
        Kamil Alkhouri <kamil.alkhouri@...offenburg.de>,
        ilias.apalodimas@...aro.org, Vladimir Oltean <olteanv@...il.com>
Subject: Re: [PATCH v3 6/8] net: dsa: hellcreek: Add PTP status LEDs

On Thu, Aug 20, 2020 at 10:11:16AM +0200, Kurt Kanzenbach wrote:
> The switch has two controllable I/Os which are usually connected to LEDs. This
> is useful to immediately visually see the PTP status.
> 
> These provide two signals:
> 
>  * is_gm
> 
>    This LED can be activated if the current device is the grand master in that
>    PTP domain.
> 
>  * sync_good
> 
>    This LED can be activated if the current device is in sync with the network
>    time.
> 
> Expose these via the LED framework to be controlled via user space
> e.g. linuxptp.
> 
> Signed-off-by: Kurt Kanzenbach <kurt@...utronix.de>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew