From: Michael Walle <mwalle@kernel.org>
To: Andrew Lunn <andrew@lunn.ch>
Cc: "Heiner Kallweit" <hkallweit1@gmail.com>,
"Russell King" <linux@armlinux.org.uk>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Yisen Zhuang" <yisen.zhuang@huawei.com>,
"Salil Mehta" <salil.mehta@huawei.com>,
"Florian Fainelli" <florian.fainelli@broadcom.com>,
"Broadcom internal kernel review list"
<bcm-kernel-feedback-list@broadcom.com>,
"Marek Behún" <kabel@kernel.org>, "Xu Liang" <lxu@maxlinear.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
"Simon Horman" <simon.horman@corigine.com>
Subject: Re: [PATCH net-next v3 10/11] net: mdio: add C45-over-C22 fallback to fwnode_mdiobus_register_phy()
Date: Wed, 19 Jul 2023 09:32:19 +0200 [thread overview]
Message-ID: <3fd646ef7c4f92187a2d44af6d1c9a03@kernel.org> (raw)
In-Reply-To: <4b31b4d0-e327-4ee5-a887-a5c35d51b2af@lunn.ch>
Am 2023-07-19 02:03, schrieb Andrew Lunn:
>> Please note, that both with the old and the new code compatible =
>> "ethernet-phy-idNNNN.NNNN" only works for the C22 case. I'm wondering
>> if
>> compatible = "ethernet-phy-idNNNN.NNNN", "ethernet-phy-ieee802.3-c45
>> even makes sense because there might be multiple C45 ids. At least it
>> is
>> an allowed pattern according to the device tree bindings. But with the
>> current code, the ethernet-phy-idNNNN.NNNN is ignored in the c45 case.
>
> I think these two should be orthogonal.
>
> ethernet-phy-idNNNN.NNNN should be used to load the driver. The driver
> has a list of IDs it can drive, and we want the module loading
> machinery to load a module which can driver this ID.
See [1]. It is used to overwrite the PHY ID. Which I think works
in the c22 case.
> "ethernet-phy-ieee802.3-c45" should be about how to read the ID
> registers, if ethernet-phy-idNNNN.NNNN is not present.
And if it's present? See [2].
-michael
[1]
https://elixir.bootlin.com/linux/v6.4.3/source/Documentation/devicetree/bindings/net/ethernet-phy.yaml#L38
[2]
https://elixir.bootlin.com/linux/v6.4.3/source/Documentation/devicetree/bindings/net/ethernet-phy.yaml#L50
next prev parent reply other threads:[~2023-07-19 7:32 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-12 15:07 [PATCH net-next v3 00/11] net: phy: C45-over-C22 access Michael Walle
2023-07-12 15:07 ` [PATCH net-next v3 01/11] net: phy: get rid of redundant is_c45 information Michael Walle
2023-07-18 17:25 ` Andrew Lunn
2023-07-12 15:07 ` [PATCH net-next v3 02/11] net: phy: introduce phy_has_c45_registers() Michael Walle
2023-07-18 17:26 ` Andrew Lunn
2023-07-18 20:07 ` Andrew Lunn
2023-07-19 7:11 ` Michael Walle
2023-08-01 14:47 ` Michael Walle
2023-08-01 14:57 ` Russell King (Oracle)
2023-08-01 15:20 ` Michael Walle
2023-08-01 15:57 ` Russell King (Oracle)
2023-08-02 15:33 ` Michael Walle
2023-08-02 16:06 ` Russell King (Oracle)
2023-08-02 17:11 ` Michael Walle
2023-08-02 23:00 ` Russell King (Oracle)
2023-08-02 16:15 ` Andrew Lunn
2023-08-02 17:10 ` Russell King (Oracle)
2023-08-02 22:21 ` Andrew Lunn
2023-08-02 22:28 ` Russell King (Oracle)
2023-09-05 8:22 ` Michael Walle
2023-07-12 15:07 ` [PATCH net-next v3 03/11] net: phy: replace is_c45 with phy_accces_mode Michael Walle
2023-07-18 17:40 ` Andrew Lunn
2023-07-18 17:52 ` Russell King (Oracle)
2023-07-18 19:18 ` Andrew Lunn
2023-07-18 21:46 ` Russell King (Oracle)
2023-07-18 23:30 ` Andrew Lunn
2023-07-18 19:53 ` Michael Walle
2023-07-18 20:16 ` Andrew Lunn
2023-07-12 15:07 ` [PATCH net-next v3 04/11] net: phy: make the "prevent_c45_scan" a property of the MII bus Michael Walle
2023-07-18 23:31 ` Andrew Lunn
2023-07-12 15:07 ` [PATCH net-next v3 05/11] net: phy: print an info if a broken C45 bus is found Michael Walle
2023-07-18 23:32 ` Andrew Lunn
2023-07-12 15:07 ` [PATCH net-next v3 06/11] net: phy: add error checks in mmd_phy_indirect() Michael Walle
2023-07-18 23:34 ` Andrew Lunn
2023-07-12 15:07 ` [PATCH net-next v3 07/11] net: phy: introduce phy_mdiobus_read_mmd() Michael Walle
2023-07-18 23:54 ` Andrew Lunn
2023-07-19 7:21 ` Michael Walle
2023-07-12 15:07 ` [PATCH net-next v3 08/11] net: phy: add support for C45-over-C22 transfers Michael Walle
2023-07-13 8:56 ` Simon Horman
2023-07-13 9:00 ` Michael Walle
2023-07-13 9:19 ` Simon Horman
2023-07-12 15:07 ` [PATCH net-next v3 09/11] net: phy: introduce phy_promote_to_c45() Michael Walle
2023-07-13 8:56 ` Simon Horman
2023-07-12 15:07 ` [PATCH net-next v3 10/11] net: mdio: add C45-over-C22 fallback to fwnode_mdiobus_register_phy() Michael Walle
2023-07-19 0:03 ` Andrew Lunn
2023-07-19 7:32 ` Michael Walle [this message]
2023-07-12 15:07 ` [PATCH net-next v3 11/11] net: mdio: support C45-over-C22 when probed via OF Michael Walle
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