linux-kernel - Re: [net-next: PATCH v3 6/8] net: core: switch to fwnode_find_net_device_by

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Message-ID: <CAHp75VeV-pFJzam_42c1w7eESWhwnxsJ4eHX5wzwLCHjKC2neQ@mail.gmail.com>
Date:   Fri, 29 Jul 2022 11:59:22 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Marcin Wojtas <mw@...ihalf.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Grzegorz Bernacki <gjb@...ihalf.com>,
        Grzegorz Jaszczyk <jaz@...ihalf.com>,
        Tomasz Nowicki <tn@...ihalf.com>,
        Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@....com>,
        upstream@...ihalf.com
Subject: Re: [net-next: PATCH v3 6/8] net: core: switch to fwnode_find_net_device_by_node()

On Fri, Jul 29, 2022 at 12:29 AM Andrew Lunn <andrew@...n.ch> wrote:
> On Thu, Jul 28, 2022 at 11:23:31PM +0200, Marcin Wojtas wrote:

...

> ACPI and DT are different things, so i don't see why they need to
> share code.

Yes and no.

ACPI _DSD extension allows us to share a lot of code when it comes to
specific device properties (that are not standardized anyhow by ACPI
specification, and for the record many of them even may not, but some
are, like MIPI camera). Maybe you want to have something like a
property standard for DSA that can be published as MIPI or so and then
that part of the code of course may very well be shared. Discussed
MDIOSerialBus() resource type is pure ACPI thingy if going to be
standardized and indeed, that part can't be shared.

Entire exercise with fwnodes allows to make drivers (most of or most
of the parts of) to be shared between different resource providers.
And this is a cool part about it.

-- 
With Best Regards,
Andy Shevchenko