linux-kernel - Re: [PATCH net-next 0/3] ptp: add pulse signal loopback support for debugging

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Message-ID: <aLhFiqHoUnsBAVR7@hoboy.vegasvil.org>
Date: Wed, 3 Sep 2025 06:41:30 -0700
From: Richard Cochran <richardcochran@...il.com>
To: Wei Fang <wei.fang@....com>
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, vladimir.oltean@....com,
	xiaoning.wang@....com, Frank.Li@....com, yangbo.lu@....com,
	christophe.leroy@...roup.eu, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-arm-kernel@...ts.infradead.org, imx@...ts.linux.dev
Subject: Re: [PATCH net-next 0/3] ptp: add pulse signal loopback support for
 debugging

On Wed, Sep 03, 2025 at 04:37:46PM +0800, Wei Fang wrote:
> Some PTP devices support looping back the periodic pulse signal for
> debugging,

What kinds of debugs can be resolved by this loopback feature?

It seems pointless to me...

Thanks,
Richard