From: Clark Wang <xiaoning.wang@nxp.com>
To: andrei.botila@oss.nxp.com
Cc: andrew@lunn.ch, ansuelsmth@gmail.com, davem@davemloft.net,
edumazet@google.com, hkallweit1@gmail.com, kuba@kernel.org,
pabeni@redhat.com, rmk+kernel@armlinux.org.uk,
sd@queasysnail.net, linux@armlinux.org.uk,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
imx@lists.linux.dev
Subject: [PATCH net] net: phy: nxp-c45-tja11xx: fix the PHY ID mismatch issue when using C45
Date: Thu, 7 Aug 2025 12:08:32 +0800 [thread overview]
Message-ID: <20250807040832.2455306-1-xiaoning.wang@nxp.com> (raw)
TJA1103/04/20/21 support both C22 and C45 accessing methods.
The TJA11xx driver has implemented the match_phy_device() API.
However, it does not handle the C45 ID. If C45 was used to access
TJA11xx, match_phy_device() would always return false due to
phydev->phy_id only used by C22 being empty, resulting in the
generic phy driver being used for TJA11xx PHYs.
Therefore, check phydev->c45_ids.device_ids[MDIO_MMD_PMAPMD] when
using C45.
Fixes: 1b76b2497aba ("net: phy: nxp-c45-tja11xx: simplify .match_phy_device OP")
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
---
drivers/net/phy/nxp-c45-tja11xx.c | 23 +++++++++++++----------
1 file changed, 13 insertions(+), 10 deletions(-)
diff --git a/drivers/net/phy/nxp-c45-tja11xx.c b/drivers/net/phy/nxp-c45-tja11xx.c
index 4c6d905f0a9f..87adb6508017 100644
--- a/drivers/net/phy/nxp-c45-tja11xx.c
+++ b/drivers/net/phy/nxp-c45-tja11xx.c
@@ -1965,24 +1965,27 @@ static int nxp_c45_macsec_ability(struct phy_device *phydev)
return macsec_ability;
}
+static bool tja11xx_phy_id_compare(struct phy_device *phydev,
+ const struct phy_driver *phydrv)
+{
+ u32 id = phydev->is_c45 ? phydev->c45_ids.device_ids[MDIO_MMD_PMAPMD] :
+ phydev->phy_id;
+
+ return phy_id_compare(id, phydrv->phy_id, phydrv->phy_id_mask);
+}
+
static int tja11xx_no_macsec_match_phy_device(struct phy_device *phydev,
const struct phy_driver *phydrv)
{
- if (!phy_id_compare(phydev->phy_id, phydrv->phy_id,
- phydrv->phy_id_mask))
- return 0;
-
- return !nxp_c45_macsec_ability(phydev);
+ return tja11xx_phy_id_compare(phydev, phydrv) &&
+ !nxp_c45_macsec_ability(phydev);
}
static int tja11xx_macsec_match_phy_device(struct phy_device *phydev,
const struct phy_driver *phydrv)
{
- if (!phy_id_compare(phydev->phy_id, phydrv->phy_id,
- phydrv->phy_id_mask))
- return 0;
-
- return nxp_c45_macsec_ability(phydev);
+ return tja11xx_phy_id_compare(phydev, phydrv) &&
+ nxp_c45_macsec_ability(phydev);
}
static const struct nxp_c45_regmap tja1120_regmap = {
--
2.34.1
next reply other threads:[~2025-08-07 4:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-07 4:08 Clark Wang [this message]
2025-08-12 10:40 ` patchwork-bot+netdevbpf
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