From: Heiner Kallweit <hkallweit1@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>,
Russell King - ARM Linux <linux@armlinux.org.uk>,
David Miller <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Eric Dumazet <edumazet@google.com>,
Neil Armstrong <neil.armstrong@linaro.org>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"open list:ARM/Amlogic Meson..."
<linux-amlogic@lists.infradead.org>,
Chris Healy <cphealy@gmail.com>
Subject: [PATCH v2 net] net: phy: meson-gxl: use MMD access dummy stubs for GXL, internal PHY
Date: Thu, 2 Feb 2023 21:45:36 +0100 [thread overview]
Message-ID: <84432fe4-0be4-bc82-4e5c-557206b40f56@gmail.com> (raw)
Jerome provided the information that also the GXL internal PHY doesn't
support MMD register access and EEE. MMD reads return 0xffff, what
results in e.g. completely wrong ethtool --show-eee output.
Therefore use the MMD dummy stubs.
v2:
- Change Fixes tag to the actually offending commit. As 4.9 is EOL
this fix will apply on all stable versions.
Fixes: d853d145ea3e ("net: phy: add an option to disable EEE advertisement")
Suggested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
drivers/net/phy/meson-gxl.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/phy/meson-gxl.c b/drivers/net/phy/meson-gxl.c
index c49062ad7..fbf5f2416 100644
--- a/drivers/net/phy/meson-gxl.c
+++ b/drivers/net/phy/meson-gxl.c
@@ -261,6 +261,8 @@ static struct phy_driver meson_gxl_phy[] = {
.handle_interrupt = meson_gxl_handle_interrupt,
.suspend = genphy_suspend,
.resume = genphy_resume,
+ .read_mmd = genphy_read_mmd_unsupported,
+ .write_mmd = genphy_write_mmd_unsupported,
}, {
PHY_ID_MATCH_EXACT(0x01803301),
.name = "Meson G12A Internal PHY",
--
2.39.1
next reply other threads:[~2023-02-02 20:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-02 20:45 Heiner Kallweit [this message]
2023-02-04 4:00 ` [PATCH v2 net] net: phy: meson-gxl: use MMD access dummy stubs for GXL, internal PHY patchwork-bot+netdevbpf
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