linux-kernel - Re: [net-next: PATCH v2 2/7] net: mdiobus: Introduce fwnode_mdbiobus

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Message-ID: <YMtHGV/Yr6h3TKKI@lunn.ch>
Date:   Thu, 17 Jun 2021 14:59:05 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Marcin Wojtas <mw@...ihalf.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Grzegorz Jaszczyk <jaz@...ihalf.com>,
        Grzegorz Bernacki <gjb@...ihalf.com>, upstream@...ihalf.com,
        Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@....com>,
        Jon Nettleton <jon@...id-run.com>,
        Tomasz Nowicki <tn@...ihalf.com>, rjw@...ysocki.net,
        lenb@...nel.org
Subject: Re: [net-next: PATCH v2 2/7] net: mdiobus: Introduce
 fwnode_mdbiobus_register()

> Actually mvmdio driver is using this fallback for non-dt platforms
> (e.g. Orion). Therefore I would prefer to keep the current behavior.

A quick look at Orion5x, it is now a multi arch MACH. It selects
ARCH_MULTI_V5. Which seems to imply ARCH_MULTIPLATFORM which selects
USE_OF which selects OF.

At least for ARM, i'm not sure you can realistically disable OF.

Having said that acpi_mdiobus_register() also falls back to
mdiobus_register(mdio). So it is symmetric. And
fwmode_mdiobus_register() falling back would keep with the
symmetry. So, O.K.

	  Andrew