netdev - Re: [PATCH v1 1/3] dt-bindings: net: dsa: microchip: add microchip,single-led-mode flag

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Message-ID: <18c6696a-7874-454d-8032-ca5130e41665@lunn.ch>
Date: Wed, 28 Jan 2026 16:22:52 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Heinrich Töws (TWx) <ht@...-software.de>
Cc: netdev@...r.kernel.org, f.fainelli@...il.com, olteanv@...il.com,
	robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org
Subject: Re: [PATCH v1 1/3] dt-bindings: net: dsa: microchip: add
 microchip,single-led-mode flag

> There is no "Manual Mode" or "GPIO Mode" for these pins. They are driven by
> a fixed internal state machine. Since we cannot control the pins' brightness
> or trigger events independently from the PHY's hardcoded logic, the netdev
> trigger or the LED class cannot be used to emulate this behavior.

Thanks for checking.

> > Is there a dual LED mode? Triple LED mode? What happens if this
> > property is not found?
> 
> If the property is not found, the switch remains in its default "Tri-Color
> Dual-LED Mode".

Is that really true? Generally, what actually happens is the
configuration is left alone. So if the boot loader, for example, has
set the configuration, that configuration is left unchanged. So it
could actually be in single LED mode, not tri-colour.

      Andrew