linux-kernel - Re: [PATCH net-next v1 2/4] dt-bindings: net: add schema for Microchip/SMSC LAN95xx USB Ethernet controllers

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Message-ID: <20220127112851.GD9150@pengutronix.de>
Date:   Thu, 27 Jan 2022 12:28:51 +0100
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Oliver Neukum <oneukum@...e.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, kernel@...gutronix.de,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        netdev@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH net-next v1 2/4] dt-bindings: net: add schema for
 Microchip/SMSC LAN95xx USB Ethernet controllers

On Thu, Jan 27, 2022 at 11:59:11AM +0100, Greg KH wrote:
> On Thu, Jan 27, 2022 at 11:49:03AM +0100, Oleksij Rempel wrote:
> > Create initial schema for Microchip/SMSC LAN95xx USB Ethernet controllers and
> > import all currently supported USB IDs form drivers/net/usb/smsc95xx.c
> 
> That is a loosing game to play.  There is a reason that kernel drivers
> only require a device id in 1 place, instead of multiple places like
> other operating systems.  Please do not go back and make the same
> mistakes others have.
> 
> Not to mention that I think overall this is a bad idea anyway.  USB
> devices are self-describing, don't add them to DT.

This patch set is the pre-step before making it even more complicated
with description of external PHYs and DSA switches. I assume, it is
preferable to have schema to be able to automatically validate it.

Regards,
Oleksij
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