From: Andrew Lunn <andrew@lunn.ch>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Marcin Wojtas <mw@semihalf.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
netdev <netdev@vger.kernel.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Len Brown <lenb@kernel.org>,
vivien.didelot@gmail.com, Florian Fainelli <f.fainelli@gmail.com>,
Vladimir Oltean <olteanv@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
pabeni@redhat.com,
Russell King - ARM Linux <linux@armlinux.org.uk>,
Heiner Kallweit <hkallweit1@gmail.com>,
Grzegorz Bernacki <gjb@semihalf.com>,
Grzegorz Jaszczyk <jaz@semihalf.com>,
Tomasz Nowicki <tn@semihalf.com>,
Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@arm.com>,
upstream@semihalf.com
Subject: Re: [net-next: PATCH 09/12] Documentation: ACPI: DSD: introduce DSA description
Date: Wed, 22 Jun 2022 13:22:15 +0200 [thread overview]
Message-ID: <YrL7Z6/ghTO/9wlx@lunn.ch> (raw)
In-Reply-To: <YrL3DQD92ijLam2V@smile.fi.intel.com>
> > It's not device on MDIO bus, but the MDIO controller's register itself
> > (this _CSR belongs to the parent, subnodes do not refer to it in any
> > way). The child device requires only _ADR (or whatever else is needed
> > for the case the DSA device is attached to SPI/I2C controllers).
>
> More and more the idea of standardizing the MDIOSerialBus() resource looks
> plausible. The _ADR() usage is a bit grey area in ACPI specification. Maybe
> someone can also make it descriptive, so Microsoft and others won't utilize
> _ADR() in any level of weirdness.
I don't know if it makes any difference, but there are two protocols
spoken over MDIO, c22 and c45, specified in clause 22 and clause 45 of
the 802.3 specification. In some conditions, you need to specify which
protocol to speak to a device at a particular address. In DT we
indicate this with the compatible string, when maybe it should really
be considered as an extension of the address.
If somebody does produce a draft for MDIOSerialBus() i'm happy to
review it.
Andrew
next prev parent reply other threads:[~2022-06-22 11:23 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-20 15:02 [net-next: PATCH 00/12] ACPI support for DSA Marcin Wojtas
2022-06-20 15:02 ` [net-next: PATCH 01/12] net: phy: fixed_phy: switch to fwnode_ API Marcin Wojtas
2022-06-20 17:25 ` Andy Shevchenko
2022-06-20 17:59 ` Andrew Lunn
2022-06-21 9:56 ` Marcin Wojtas
2022-06-21 10:01 ` Russell King (Oracle)
2022-06-20 15:02 ` [net-next: PATCH 02/12] net: mdio: switch fixed-link PHYs API to fwnode_ Marcin Wojtas
2022-06-20 17:32 ` Andy Shevchenko
2022-06-21 9:22 ` Marcin Wojtas
2022-06-20 15:02 ` [net-next: PATCH 03/12] net: dsa: switch to device_/fwnode_ APIs Marcin Wojtas
2022-06-20 17:41 ` Andy Shevchenko
2022-06-21 9:27 ` Marcin Wojtas
2022-06-21 11:02 ` Andy Shevchenko
2022-06-22 16:09 ` Florian Fainelli
2022-06-20 15:02 ` [net-next: PATCH 04/12] net: mvpp2: initialize port fwnode pointer Marcin Wojtas
2022-06-20 17:43 ` Andy Shevchenko
2022-06-20 17:44 ` Andy Shevchenko
2022-06-21 9:28 ` Marcin Wojtas
2022-06-20 15:02 ` [net-next: PATCH 05/12] net: core: switch to fwnode_find_net_device_by_node() Marcin Wojtas
2022-06-20 17:46 ` Andy Shevchenko
2022-06-20 23:15 ` Marcin Wojtas
2022-06-20 22:30 ` kernel test robot
2022-06-20 15:02 ` [net-next: PATCH 06/12] net: mdio: introduce fwnode_mdiobus_register_device() Marcin Wojtas
2022-06-20 17:48 ` Andy Shevchenko
2022-06-21 9:33 ` Marcin Wojtas
2022-06-20 15:02 ` [net-next: PATCH 07/12] net: mdio: allow registering non-PHY devices in ACPI world Marcin Wojtas
2022-06-20 15:02 ` [net-next: PATCH 08/12] ACPI: scan: prevent double enumeration of MDIO bus children Marcin Wojtas
2022-06-20 17:53 ` Andy Shevchenko
2022-06-20 23:04 ` Marcin Wojtas
2022-06-22 12:09 ` Rafael J. Wysocki
2022-06-22 15:05 ` Marcin Wojtas
2022-06-20 19:08 ` Andrew Lunn
2022-06-22 12:05 ` Rafael J. Wysocki
2022-06-22 16:12 ` Florian Fainelli
2022-06-22 16:21 ` Rafael J. Wysocki
2022-06-23 7:41 ` Andrew Lunn
2022-06-23 23:07 ` Marcin Wojtas
2022-06-20 15:02 ` [net-next: PATCH 09/12] Documentation: ACPI: DSD: introduce DSA description Marcin Wojtas
2022-06-20 18:19 ` Andrew Lunn
2022-06-20 23:21 ` Marcin Wojtas
2022-06-20 19:47 ` Andrew Lunn
2022-06-20 23:25 ` Marcin Wojtas
2022-06-21 11:09 ` Andy Shevchenko
2022-06-21 11:18 ` Andrew Lunn
2022-06-21 11:42 ` Andy Shevchenko
2022-06-22 9:08 ` Marcin Wojtas
2022-06-22 9:24 ` Andrew Lunn
2022-06-22 10:22 ` Marcin Wojtas
2022-06-22 10:37 ` Andrew Lunn
2022-06-22 11:08 ` Andy Shevchenko
2022-06-22 11:04 ` Andy Shevchenko
2022-06-22 11:03 ` Andy Shevchenko
2022-06-22 11:22 ` Andrew Lunn [this message]
2022-06-22 14:20 ` Andy Shevchenko
2022-06-22 15:00 ` Marcin Wojtas
2022-06-21 9:45 ` Sudeep Holla
2022-06-21 11:15 ` Andy Shevchenko
2022-06-21 11:24 ` Andrew Lunn
2022-06-21 11:46 ` Andy Shevchenko
2022-06-21 11:57 ` Andrew Lunn
2022-06-21 13:28 ` Sudeep Holla
2022-06-21 15:23 ` Rafael J. Wysocki
2022-06-21 15:37 ` Sudeep Holla
2022-06-21 16:00 ` Rafael J. Wysocki
2022-06-21 18:11 ` Sudeep Holla
2022-06-20 15:02 ` [net-next: PATCH 10/12] net: dsa: add ACPI support Marcin Wojtas
2022-06-20 18:32 ` Andrew Lunn
2022-06-20 23:31 ` Marcin Wojtas
2022-06-20 15:02 ` [net-next: PATCH 11/12] net: dsa: mv88e6xxx: switch to device_/fwnode_ APIs Marcin Wojtas
2022-06-20 18:00 ` Andy Shevchenko
2022-06-21 9:14 ` Marcin Wojtas
2022-06-20 18:04 ` Andy Shevchenko
2022-06-21 9:15 ` Marcin Wojtas
2022-06-20 15:02 ` [net-next: PATCH 12/12] net: dsa: mv88e6xxx: add ACPI support Marcin Wojtas
2022-06-25 2:54 ` kernel test robot
2022-06-20 17:21 ` [net-next: PATCH 00/12] ACPI support for DSA Andy Shevchenko
2022-06-21 10:02 ` Marcin Wojtas
2022-06-20 17:55 ` Andrew Lunn
2022-06-20 18:07 ` Andy Shevchenko
2022-06-20 18:45 ` Andrew Lunn
2022-06-21 10:46 ` Marcin Wojtas
2022-06-22 15:40 ` Marcin Wojtas
2022-06-22 16:14 ` Andy Shevchenko
2022-06-21 10:16 ` Marcin Wojtas
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