From: Andrew Lunn <andrew@lunn.ch>
To: Ong Boon Leong <boon.leong.ong@intel.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>,
Jose Abreu <joabreu@synopsys.com>,
Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
Paolo Abeni <pabeni@redhat.com>,
"David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Giuseppe Cavallaro <peppe.cavallaro@st.com>,
netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next 2/4] net: stmmac: introduce PHY-less setup support
Date: Fri, 22 Apr 2022 14:58:49 +0200 [thread overview]
Message-ID: <YmKmifSfqRdjOXSd@lunn.ch> (raw)
In-Reply-To: <20220422073505.810084-3-boon.leong.ong@intel.com>
On Fri, Apr 22, 2022 at 03:35:03PM +0800, Ong Boon Leong wrote:
> Certain platform uses PHY-less configuration whereby the MAC controller
> is connected to network switch chip directly over SGMII or 1000BASE-X.
>
> This patch prepares the stmmac driver to support PHY-less configuration
> described above.
The normal way to do a PHY less setup is to use a fixed-PHY. It offers
the same API to the MAC as a real PHY but is fixed speed, dupex
etc. The MAC sees a PHY as usual, and you don't need anything special
in the MAC.
What you need to do is extend your DSD to list the fixed-link. See
https://www.kernel.org/doc/html/latest/firmware-guide/acpi/dsd/phy.html#mac-node-example-with-a-fixed-link-subnode
Andrew
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Lunn <andrew@lunn.ch>
To: Ong Boon Leong <boon.leong.ong@intel.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>,
Jose Abreu <joabreu@synopsys.com>,
Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
Paolo Abeni <pabeni@redhat.com>,
"David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Giuseppe Cavallaro <peppe.cavallaro@st.com>,
netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next 2/4] net: stmmac: introduce PHY-less setup support
Date: Fri, 22 Apr 2022 14:58:49 +0200 [thread overview]
Message-ID: <YmKmifSfqRdjOXSd@lunn.ch> (raw)
In-Reply-To: <20220422073505.810084-3-boon.leong.ong@intel.com>
On Fri, Apr 22, 2022 at 03:35:03PM +0800, Ong Boon Leong wrote:
> Certain platform uses PHY-less configuration whereby the MAC controller
> is connected to network switch chip directly over SGMII or 1000BASE-X.
>
> This patch prepares the stmmac driver to support PHY-less configuration
> described above.
The normal way to do a PHY less setup is to use a fixed-PHY. It offers
the same API to the MAC as a real PHY but is fixed speed, dupex
etc. The MAC sees a PHY as usual, and you don't need anything special
in the MAC.
What you need to do is extend your DSD to list the fixed-link. See
https://www.kernel.org/doc/html/latest/firmware-guide/acpi/dsd/phy.html#mac-node-example-with-a-fixed-link-subnode
Andrew
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next prev parent reply other threads:[~2022-04-22 12:59 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-22 7:35 [PATCH net-next 0/4] pcs-xpcs, stmmac: add 1000BASE-X AN for network switch Ong Boon Leong
2022-04-22 7:35 ` Ong Boon Leong
2022-04-22 7:35 ` [PATCH net-next 1/4] net: pcs: xpcs: add CL37 1000BASE-X AN support Ong Boon Leong
2022-04-22 7:35 ` Ong Boon Leong
2022-04-22 8:00 ` Russell King (Oracle)
2022-04-22 8:00 ` Russell King (Oracle)
2022-04-25 3:30 ` Ong, Boon Leong
2022-04-25 3:30 ` Ong, Boon Leong
2022-04-22 17:35 ` kernel test robot
2022-04-22 17:35 ` kernel test robot
2022-04-23 3:00 ` kernel test robot
2022-04-23 3:00 ` kernel test robot
2022-04-22 7:35 ` [PATCH net-next 2/4] net: stmmac: introduce PHY-less setup support Ong Boon Leong
2022-04-22 7:35 ` Ong Boon Leong
2022-04-22 12:58 ` Andrew Lunn [this message]
2022-04-22 12:58 ` Andrew Lunn
2022-04-23 1:13 ` Ong, Boon Leong
2022-04-23 1:13 ` Ong, Boon Leong
2022-04-22 7:35 ` [PATCH net-next 3/4] stmmac: intel: prepare to support 1000BASE-X phy interface setting Ong Boon Leong
2022-04-22 7:35 ` Ong Boon Leong
2022-04-22 7:35 ` [PATCH net-next 4/4] stmmac: intel: introduce platform data phyless setting for Ericsson system Ong Boon Leong
2022-04-22 7:35 ` Ong Boon Leong
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