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From: Andrew Lunn <andrew@lunn.ch>
To: Calvin Johnson <calvin.johnson@oss.nxp.com>
Cc: Jeremy Linton <jeremy.linton@arm.com>,
	Andy Shevchenko <andy.shevchenko@gmail.com>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Russell King - ARM Linux admin <linux@armlinux.org.uk>,
	linux.cj@gmail.com, Florian Fainelli <f.fainelli@gmail.com>,
	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>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>,
	Varun Sethi <V.Sethi@nxp.com>,
	"Rajesh V . Bikkina" <rajesh.bikkina@nxp.com>,
	ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Diana Madalina Craciun <diana.craciun@nxp.com>,
	netdev <netdev@vger.kernel.org>, Marcin Wojtas <mw@semihalf.com>,
	Laurentiu Tudor <laurentiu.tudor@nxp.com>,
	Makarand Pawagi <makarand.pawagi@nxp.com>,
	linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
	Pankaj Bansal <pankaj.bansal@nxp.com>,
	"David S. Miller" <davem@davemloft.net>,
	Heiner Kallweit <hkallweit1@gmail.com>
Subject: Re: [net-next PATCH v3 4/5] net: phy: Introduce fwnode_get_phy_id()
Date: Mon, 11 May 2020 15:04:57 +0200	[thread overview]
Message-ID: <20200511130457.GC409897@lunn.ch> (raw)
In-Reply-To: <20200511080040.GC12725@lsv03152.swis.in-blr01.nxp.com>

> NXP's LX2160ARDB platform currently has the following MDIO-PHY connection.
> 
> MDIO-1 ==> one 40G PHY, two 1G PHYs(C45), two 10G PHYs(C22)
> MDIO-2 ==> one 25G PHY

It has been suggested that ACPI only support a one to one
mapping. Each MAC has one MDIO bus, with one PHY on it. KISS.

This clearly does not work for your hardware. So not only do we need
to solve how PHY properties are described, we also need an equivalent
of phy-handle, so a MAC can indicate which PHY it is connected to.

So in effect, you seem to be heading towards a pretty full
reproduction of the DT binding. Before you go too much further and
waste too much of your time, you might want confirmation from the ACPI
people this is not too advanced for what ACPI can do and they tell you
to forget ACPI for this hardware and stick with DT.

   Andrew

WARNING: multiple messages have this Message-ID (diff)
From: Andrew Lunn <andrew@lunn.ch>
To: Calvin Johnson <calvin.johnson@oss.nxp.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Cristi Sovaiala <cristian.sovaiala@nxp.com>,
	Ioana Ciornei <ioana.ciornei@nxp.com>,
	Florian Fainelli <f.fainelli@gmail.com>,
	"Rajesh V . Bikkina" <rajesh.bikkina@nxp.com>,
	Pankaj Bansal <pankaj.bansal@nxp.com>,
	Russell King - ARM Linux admin <linux@armlinux.org.uk>,
	Diana Madalina Craciun <diana.craciun@nxp.com>,
	ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
	Andy Shevchenko <andy.shevchenko@gmail.com>,
	Florin Laurentiu Chiculita <florinlaurentiu.chiculita@nxp.com>,
	Madalin Bucur <madalin.bucur@oss.nxp.com>,
	Makarand Pawagi <makarand.pawagi@nxp.com>,
	Varun Sethi <V.Sethi@nxp.com>, Marcin Wojtas <mw@semihalf.com>,
	linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
	Laurentiu Tudor <laurentiu.tudor@nxp.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Jeremy Linton <jeremy.linton@arm.com>,
	linux.cj@gmail.com, netdev <netdev@vger.kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Heiner Kallweit <hkallweit1@gmail.com>
Subject: Re: [net-next PATCH v3 4/5] net: phy: Introduce fwnode_get_phy_id()
Date: Mon, 11 May 2020 15:04:57 +0200	[thread overview]
Message-ID: <20200511130457.GC409897@lunn.ch> (raw)
In-Reply-To: <20200511080040.GC12725@lsv03152.swis.in-blr01.nxp.com>

> NXP's LX2160ARDB platform currently has the following MDIO-PHY connection.
> 
> MDIO-1 ==> one 40G PHY, two 1G PHYs(C45), two 10G PHYs(C22)
> MDIO-2 ==> one 25G PHY

It has been suggested that ACPI only support a one to one
mapping. Each MAC has one MDIO bus, with one PHY on it. KISS.

This clearly does not work for your hardware. So not only do we need
to solve how PHY properties are described, we also need an equivalent
of phy-handle, so a MAC can indicate which PHY it is connected to.

So in effect, you seem to be heading towards a pretty full
reproduction of the DT binding. Before you go too much further and
waste too much of your time, you might want confirmation from the ACPI
people this is not too advanced for what ACPI can do and they tell you
to forget ACPI for this hardware and stick with DT.

   Andrew

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2020-05-11 13:05 UTC|newest]

Thread overview: 76+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-05 13:29 [net-next PATCH v3 0/5] Introduce new fwnode based APIs to support phylink and phy layers Calvin Johnson
2020-05-05 13:29 ` Calvin Johnson
2020-05-05 13:29 ` [net-next PATCH v3 1/5] net: phy: Introduce phy related fwnode functions Calvin Johnson
2020-05-05 13:29   ` Calvin Johnson
2020-05-05 14:44   ` Russell King - ARM Linux admin
2020-05-05 14:44     ` Russell King - ARM Linux admin
2020-05-05 23:21   ` kbuild test robot
2020-05-05 23:21     ` kbuild test robot
2020-05-05 23:39   ` Russell King - ARM Linux admin
2020-05-05 23:39     ` Russell King - ARM Linux admin
2020-05-06  0:07   ` kbuild test robot
2020-05-06  0:07     ` kbuild test robot
2020-05-05 13:29 ` [net-next PATCH v3 2/5] net: phy: alphabetically sort header includes Calvin Johnson
2020-05-05 13:29   ` Calvin Johnson
2020-05-05 13:29 ` [net-next PATCH v3 3/5] phylink: Introduce phylink_fwnode_phy_connect() Calvin Johnson
2020-05-05 13:29   ` Calvin Johnson
2020-05-05 14:13   ` Andy Shevchenko
2020-05-05 14:13     ` Andy Shevchenko
2020-05-05 14:35   ` Russell King - ARM Linux admin
2020-05-05 14:35     ` Russell King - ARM Linux admin
2020-05-05 13:29 ` [net-next PATCH v3 4/5] net: phy: Introduce fwnode_get_phy_id() Calvin Johnson
2020-05-05 13:29   ` Calvin Johnson
2020-05-05 14:15   ` Andy Shevchenko
2020-05-05 14:15     ` Andy Shevchenko
2020-05-05 14:20     ` Russell King - ARM Linux admin
2020-05-05 14:20       ` Russell King - ARM Linux admin
2020-05-07 13:26   ` Jeremy Linton
2020-05-07 13:26     ` Jeremy Linton
2020-05-07 17:27     ` Andy Shevchenko
2020-05-07 17:27       ` Andy Shevchenko
2020-05-07 19:54       ` Jeremy Linton
2020-05-07 19:54         ` Jeremy Linton
2020-05-08 16:07         ` Calvin Johnson
2020-05-08 16:07           ` Calvin Johnson
2020-05-08 18:13           ` Andrew Lunn
2020-05-08 18:13             ` Andrew Lunn
2020-05-08 19:18             ` Jeremy Linton
2020-05-08 19:18               ` Jeremy Linton
2020-05-08 20:27               ` Andrew Lunn
2020-05-08 20:27                 ` Andrew Lunn
2020-05-08 22:48                 ` Jeremy Linton
2020-05-08 22:48                   ` Jeremy Linton
2020-05-08 23:42                   ` Andrew Lunn
2020-05-08 23:42                     ` Andrew Lunn
2020-05-09  0:11                     ` Jeremy Linton
2020-05-09  0:11                       ` Jeremy Linton
2020-05-11  8:00                     ` Calvin Johnson
2020-05-11  8:00                       ` Calvin Johnson
2020-05-11  9:38                       ` Russell King - ARM Linux admin
2020-05-11  9:38                         ` Russell King - ARM Linux admin
2020-05-11 10:29                         ` Calvin Johnson
2020-05-11 10:29                           ` Calvin Johnson
2020-05-11 10:48                           ` Russell King - ARM Linux admin
2020-05-11 10:48                             ` Russell King - ARM Linux admin
2020-05-11 12:02                             ` Calvin Johnson
2020-05-11 12:02                               ` Calvin Johnson
2020-05-11 13:04                       ` Andrew Lunn [this message]
2020-05-11 13:04                         ` Andrew Lunn
2020-05-11 13:35                         ` Russell King - ARM Linux admin
2020-05-11 13:35                           ` Russell King - ARM Linux admin
2020-05-11 14:59                         ` Calvin Johnson
2020-05-11 14:59                           ` Calvin Johnson
2020-05-11  7:39                   ` Calvin Johnson
2020-05-11  7:39                     ` Calvin Johnson
2020-05-11  5:52             ` Calvin Johnson
2020-05-11  5:52               ` Calvin Johnson
2020-05-11 12:53               ` Andrew Lunn
2020-05-11 12:53                 ` Andrew Lunn
2020-05-05 13:29 ` [net-next PATCH v3 5/5] net: mdiobus: Introduce fwnode_mdiobus_register_phy() Calvin Johnson
2020-05-05 13:29   ` Calvin Johnson
2020-05-05 14:22   ` Andy Shevchenko
2020-05-05 14:22     ` Andy Shevchenko
2020-05-07  7:44     ` Calvin Johnson
2020-05-07  7:44       ` Calvin Johnson
2020-05-07  9:10       ` Andy Shevchenko
2020-05-07  9:10         ` Andy Shevchenko

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