linux-kernel - Re: [PATCH v6 1/4] dt-bindings: net: phy: Add subnode for LED configuration

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Message-ID: <20190816201338.GA1646@bug>
Date:   Fri, 16 Aug 2019 22:13:38 +0200
From:   Pavel Machek <pavel@....cz>
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>
Subject: Re: [PATCH v6 1/4] dt-bindings: net: phy: Add subnode for LED
 configuration

Hi!

Please Cc led mailing lists on led issues.


On Tue 2019-08-13 12:11:44, Matthias Kaehlcke wrote:
> The LED behavior of some Ethernet PHYs is configurable. Add an
> optional 'leds' subnode with a child node for each LED to be
> configured. The binding aims to be compatible with the common
> LED binding (see devicetree/bindings/leds/common.txt).
> 
> A LED can be configured to be:
> 
> - 'on' when a link is active, some PHYs allow configuration for
>   certain link speeds
>   speeds
> - 'off'
> - blink on RX/TX activity, some PHYs allow configuration for
>   certain link speeds
> 
> For the configuration to be effective it needs to be supported by
> the hardware and the corresponding PHY driver.
> 
> Suggested-by: Andrew Lunn <andrew@...n.ch>
> Signed-off-by: Matthias Kaehlcke <mka@...omium.org>

> @@ -173,5 +217,20 @@ examples:
>              reset-gpios = <&gpio1 4 1>;
>              reset-assert-us = <1000>;
>              reset-deassert-us = <2000>;
> +
> +            leds {
> +                #address-cells = <1>;
> +                #size-cells = <0>;
> +
> +                led@0 {
> +                    reg = <0>;
> +                    linux,default-trigger = "phy-link-1g";
> +                };

Because this affects us.

Is the LED software controllable? Or can it do limited subset of triggers you listed?

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html