From: Calvin Johnson <calvin.johnson@oss.nxp.com>
To: Randy Dunlap <rdunlap@infradead.org>
Cc: Grant Likely <grant.likely@arm.com>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Jeremy Linton <jeremy.linton@arm.com>,
Andrew Lunn <andrew@lunn.ch>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Russell King - ARM Linux admin <linux@armlinux.org.uk>,
Cristi Sovaiala <cristian.sovaiala@nxp.com>,
Florin Laurentiu Chiculita <florinlaurentiu.chiculita@nxp.com>,
Ioana Ciornei <ioana.ciornei@nxp.com>,
Madalin Bucur <madalin.bucur@oss.nxp.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Marcin Wojtas <mw@semihalf.com>,
Pieter Jansen Van Vuuren <pieter.jansenvv@bamboosystems.io>,
Jon <jon@solid-run.com>, Saravana Kannan <saravanak@google.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
linux-kernel@vger.kernel.org, linux.cj@gmail.com,
Diana Madalina Craciun <diana.craciun@nxp.com>,
netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-acpi@vger.kernel.org, Len Brown <lenb@kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>
Subject: Re: [net-next PATCH v5 01/15] Documentation: ACPI: DSD: Document MDIO PHY
Date: Tue, 9 Feb 2021 20:04:09 +0530 [thread overview]
Message-ID: <20210209143409.GA3248@lsv03152.swis.in-blr01.nxp.com> (raw)
In-Reply-To: <0a347d2a-f885-5b26-4477-ff267527d8c4@infradead.org>
On Mon, Feb 08, 2021 at 12:01:57PM -0800, Randy Dunlap wrote:
> Hi,
> Just a couple of nits below:
>
> On 2/8/21 7:12 AM, Calvin Johnson wrote:
> > Introduce ACPI mechanism to get PHYs registered on a MDIO bus and
> > provide them to be connected to MAC.
> >
> > Describe properties "phy-handle" and "phy-mode".
> >
> > Signed-off-by: Calvin Johnson <calvin.johnson@oss.nxp.com>
> > ---
>
> > Documentation/firmware-guide/acpi/dsd/phy.rst | 133 ++++++++++++++++++
> > 1 file changed, 133 insertions(+)
> > create mode 100644 Documentation/firmware-guide/acpi/dsd/phy.rst
> >
> > diff --git a/Documentation/firmware-guide/acpi/dsd/phy.rst b/Documentation/firmware-guide/acpi/dsd/phy.rst
> > new file mode 100644
> > index 000000000000..e1e99cae5eb2
> > --- /dev/null
> > +++ b/Documentation/firmware-guide/acpi/dsd/phy.rst
> > @@ -0,0 +1,133 @@
> > +.. SPDX-License-Identifier: GPL-2.0
> > +
> > +=========================
> > +MDIO bus and PHYs in ACPI
> > +=========================
> > +
> > +The PHYs on an MDIO bus [1] are probed and registered using
> > +fwnode_mdiobus_register_phy().
> > +
> > +Later, for connecting these PHYs to MAC, the PHYs registered on the
>
> to a MAC,
Each PHY is connected to a MAC. So I'll change it to "PHYs to their respective MACs".
>
> > +MDIO bus have to be referenced.
> > +
> > +This document introduces two _DSD properties that are to be used
> > +for connecting PHYs on the MDIO bus [3] to the MAC layer.
> > +
> > +These properties are defined in accordance with the "Device
> > +Properties UUID For _DSD" [2] document and the
> > +daffd814-6eba-4d8c-8a91-bc9bbf4aa301 UUID must be used in the Device
> > +Data Descriptors containing them.
> > +
> > +phy-handle
> > +----------
>
> ...
>
> > +
> > +Later, during the MAC driver initialization, the registered PHY devices
> > +have to be retrieved from the MDIO bus. For this, the MAC driver need
>
> needs
>
> > +references to the previously registered PHYs which are provided
> > +as device object references (e.g. \_SB.MDI0.PHY1).
>
>
> thanks.
> --
> ~Randy
>
next prev parent reply other threads:[~2021-02-09 14:36 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-08 15:12 [net-next PATCH v5 00/15] ACPI support for dpaa2 driver Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 01/15] Documentation: ACPI: DSD: Document MDIO PHY Calvin Johnson
2021-02-08 20:01 ` Randy Dunlap
2021-02-09 14:34 ` Calvin Johnson [this message]
2021-02-08 15:12 ` [net-next PATCH v5 02/15] net: phy: Introduce fwnode_mdio_find_device() Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 03/15] net: phy: Introduce phy related fwnode functions Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 04/15] of: mdio: Refactor of_phy_find_device() Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 05/15] net: phy: Introduce fwnode_get_phy_id() Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 06/15] of: mdio: Refactor of_get_phy_id() Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 07/15] net: mdiobus: Introduce fwnode_mdiobus_register_phy() Calvin Johnson
2021-02-08 17:40 ` Russell King - ARM Linux admin
2021-02-09 15:04 ` Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 08/15] of: mdio: Refactor of_mdiobus_register_phy() Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 09/15] ACPI: utils: Introduce acpi_get_local_address() Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 10/15] net: mdio: Add ACPI support code for mdio Calvin Johnson
2021-02-08 16:16 ` Andy Shevchenko
2021-02-08 15:12 ` [net-next PATCH v5 11/15] net: mdiobus: Introduce fwnode_mdiobus_register() Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 12/15] net/fsl: Use fwnode_mdiobus_register() Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 13/15] phylink: introduce phylink_fwnode_phy_connect() Calvin Johnson
2021-02-08 15:31 ` Russell King - ARM Linux admin
2021-02-15 5:55 ` Calvin Johnson
2021-02-15 6:01 ` Calvin Johnson
2021-02-08 16:20 ` Russell King - ARM Linux admin
2021-02-08 15:12 ` [net-next PATCH v5 14/15] net: phylink: Refactor phylink_of_phy_connect() Calvin Johnson
2021-02-08 15:12 ` [net-next PATCH v5 15/15] net: dpaa2-mac: Add ACPI support for DPAA2 MAC driver Calvin Johnson
2021-02-08 16:21 ` Andy Shevchenko
2021-02-08 16:28 ` Russell King - ARM Linux admin
2021-02-15 12:33 ` Calvin Johnson
2021-02-15 15:13 ` Andy Shevchenko
2021-02-15 15:15 ` Andy Shevchenko
2021-02-16 9:59 ` Calvin Johnson
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