From: Wong Vee Khee <vee.khee.wong@linux.intel.com>
To: Andrew Lunn <andrew@lunn.ch>,
Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RFC net-next 0/2] Introduce MDIO probe order C45 over C22
Date: Tue, 25 May 2021 13:58:03 +0800 [thread overview]
Message-ID: <20210525055803.22116-1-vee.khee.wong@linux.intel.com> (raw)
Synopsys MAC controller is capable of pairing with external PHY devices
that accessible via Clause-22 and Clause-45.
There is a problem when it is paired with Marvell 88E2110 which returns
PHY ID of 0 using get_phy_c22_id(). We can add this check in that
function, but this will break swphy, as swphy_reg_reg() return 0. [1]
Hence, we introduce MDIOBUS_CAP_C45_C22 which allow us to probe using
Clause-45, if it fails, we then proceed to try with Clause-22.
[1]: https://lkml.org/lkml/2021/3/18/584
Wong Vee Khee (2):
net: phy: allow mdio bus to probe for c45 devices before c22
net: stmmac: allow gmac4 to probe for c45 devices before c22
drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 2 +-
include/linux/phy.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
--
2.25.1
next reply other threads:[~2021-05-25 5:53 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-25 5:58 Wong Vee Khee [this message]
2021-05-25 13:34 ` [RFC net-next 0/2] Introduce MDIO probe order C45 over C22 Andrew Lunn
2021-06-01 10:47 ` Wong Vee Khee
2021-06-01 13:04 ` Andrew Lunn
2021-06-01 15:44 ` Wong Vee Khee
2021-06-01 22:21 ` Andrew Lunn
2021-06-01 23:03 ` Wong Vee Khee
2021-06-02 2:19 ` Andrew Lunn
2021-06-02 14:15 ` Wong Vee Khee
2021-06-02 15:03 ` Andrew Lunn
2021-06-02 23:51 ` Wong Vee Khee
2021-06-05 0:37 ` Wong Vee Khee
2021-06-05 18:36 ` Andrew Lunn
2021-06-06 0:54 ` Wong Vee Khee
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