linux-kernel - Re: [PATCH net-next v1 3/3] net: fec: add basic selftest support

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Message-ID: <YGRqpxefTxZjqp6w@lunn.ch>
Date:   Wed, 31 Mar 2021 14:27:19 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Fugang Duan <fugang.duan@....com>, kernel@...gutronix.de,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-imx@....com,
        Fabio Estevam <festevam@...il.com>,
        David Jander <david@...tonic.nl>,
        Russell King <linux@...linux.org.uk>,
        Philippe Schenker <philippe.schenker@...adex.com>
Subject: Re: [PATCH net-next v1 3/3] net: fec: add basic selftest support

On Tue, Mar 30, 2021 at 03:54:07PM +0200, Oleksij Rempel wrote:
> Port some parts of the stmmac selftest to the FEC. This patch was tested
> on iMX6DL.
> With this tests it is possible to detect some basic issues like:
> - MAC loopback fail: most probably wrong clock configuration.
> - PHY loopback fail: incorrect RGMII timings, damaged traces, etc

Hi

Oleksij

I've not done a side-by-side diff with stmmac, but i guess a lot of
this code is identical? Rather than make a copy/paste, could you move
it somewhere under net and turn it into a library any driver can use?

   Andrew