From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Andrew Lunn <andrew@lunn.ch>
Cc: "Michael Walle" <mwalle@kernel.org>,
"Heiner Kallweit" <hkallweit1@gmail.com>,
"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 18:52:12 +0100 [thread overview]
Message-ID: <ZLbRTLRbHW/Xt2hL@shell.armlinux.org.uk> (raw)
In-Reply-To: <509889a3-f633-40b0-8349-9ef378818cc7@lunn.ch>
On Tue, Jul 18, 2023 at 07:40:49PM +0200, Andrew Lunn wrote:
> > static inline bool phy_has_c45_registers(struct phy_device *phydev)
> > {
> > - return phydev->is_c45;
> > + return phydev->access_mode != PHY_ACCESS_C22;
> > }
>
> So this is making me wounder if we have a clean separation between
> register spaces and access methods.
>
> Should there be a phy_has_c22_registers() ?
Yes, I've been wondering that. I've recently heard about a Realtek PHY
which is supported by our realtek driver, but appears on a SFP that
can only do C45 accesses. However, the realtek driver is written to
use C22 accesses to this PHY - and the PHY supports both. So currently
it doesn't work.
That's just an additional data point for thinking about this, I haven't
formulated a solution to it yet.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2023-07-18 17:52 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) [this message]
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
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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