linux-kernel - Re: [RFC 10/10] net: sfp: add support for fwnode

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Message-ID: <YhZUf6MXUTumYyvF@smile.fi.intel.com>
Date:   Wed, 23 Feb 2022 17:36:31 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Hans de Goede <hdegoede@...hat.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Clément Léger <clement.leger@...tlin.com>,
        "Russell King (Oracle)" <linux@...linux.org.uk>,
        Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Wolfram Sang <wsa@...nel.org>, Peter Rosin <peda@...ntia.se>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org, linux-i2c@...r.kernel.org,
        netdev@...r.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: Re: [RFC 10/10] net: sfp: add support for fwnode

On Wed, Feb 23, 2022 at 04:27:33PM +0100, Hans de Goede wrote:
> On 2/23/22 16:23, Andrew Lunn wrote:
> >> As Russell asked, I'm also really interested if someone has a solution
> >> to reuse device-tree description (overlays ?) to describe such
> >> hardware. However, the fact that CONFIG_OF isn't enabled on x86 config
> >> seems a bit complicated on this side.
> > 
> > It does work, intel even used it for one of there tiny x86 SoCs. Maybe
> > it was Newton?
> 
> IIRC those SoCs did not use standard EFI/ACPI though, but rather some
> other special firmware, I think it was SFI ?  This is not so much about
> the CPU architecture as it is about the firmware/bootloader <->
> OS interface.

I think Andrew refers to Intel SoCs that are using OF. Those so far are
CE4xxx and SoFIA SoCs.

-- 
With Best Regards,
Andy Shevchenko