From: Andrew Lunn <andrew@lunn.ch>
To: Michael Walle <mwalle@kernel.org>
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 03/11] net: phy: replace is_c45 with phy_accces_mode
Date: Tue, 18 Jul 2023 22:16:37 +0200 [thread overview]
Message-ID: <16c19cff-cca7-43fa-97a8-c4e74f033b0b@lunn.ch> (raw)
In-Reply-To: <66d9daa106d7840e972dba35914e6983@kernel.org>
> Maybe we need to clarify what "has c22/c45 registers space" actually
> means. Responds to MII c22/c45 access?
No. That is not what it means to me. Bus transactions and register
spaces are different.
There are C22 registers, and there are C45 registers.
The bus can do C22 transfers, and it can do C45 transfers.
C22 registers can be access using C22 bus transfers.
C45 registers can be accessed using either C45 bus transfers, or
indirectly via C45 over C22 transfers.
Currently, there is no C22 over C45, but given the oddball Realtek PHY
Russell is talking about in an SFP, it might have a proprietary C22
over C45?
Andrew
next prev parent reply other threads:[~2023-07-18 20:17 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 [this message]
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
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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