From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Marcin Wojtas <mw@semihalf.com>
Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
netdev@vger.kernel.org, rafael@kernel.org, lenb@kernel.org,
andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com,
olteanv@gmail.com, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org, pabeni@redhat.com, linux@armlinux.org.uk,
hkallweit1@gmail.com, gjb@semihalf.com, jaz@semihalf.com,
tn@semihalf.com, Samer.El-Haj-Mahmoud@arm.com,
upstream@semihalf.com
Subject: Re: [net-next: PATCH 08/12] ACPI: scan: prevent double enumeration of MDIO bus children
Date: Mon, 20 Jun 2022 20:53:09 +0300 [thread overview]
Message-ID: <YrC0BSeUJaBkhEop@smile.fi.intel.com> (raw)
In-Reply-To: <20220620150225.1307946-9-mw@semihalf.com>
On Mon, Jun 20, 2022 at 05:02:21PM +0200, Marcin Wojtas wrote:
> The MDIO bus is responsible for probing and registering its respective
> children, such as PHYs or other kind of devices.
>
> It is required that ACPI scan code should not enumerate such
> devices, leaving this task for the generic MDIO bus routines,
> which are initiated by the controller driver.
>
> This patch prevents unwanted enumeration of the devices by setting
> 'enumeration_by_parent' flag, depending on whether their parent
> device is a member of a known list of MDIO controllers. For now,
> the Marvell MDIO controllers' IDs are added.
This flag is used for serial buses that are not self-discoverable. Not sure
about MDIO, but the current usage has a relation to the _CRS. Have you
considered to propose the MdioSerialBus() resource type to ACPI specification?
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2022-06-20 17:53 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 [this message]
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
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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