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From: Michael Walle <michael@walle.cc>
To: Xu Liang <lxu@maxlinear.com>, Andrew Lunn <andrew@lunn.ch>,
	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>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	Michael Walle <michael@walle.cc>
Subject: [PATCH RFC net-next v2 2/2] net: phy: mxl-gpy: disable interrupts on GPY215 by default
Date: Wed, 28 Dec 2022 17:40:08 +0100	[thread overview]
Message-ID: <20221228164008.1653348-3-michael@walle.cc> (raw)
In-Reply-To: <20221228164008.1653348-1-michael@walle.cc>

The interrupts on the GPY215B and GPY215C are broken and the only viable
fix is to disable them altogether. There is still the possibilty to
opt-in via the device tree.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/net/phy/mxl-gpy.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/phy/mxl-gpy.c b/drivers/net/phy/mxl-gpy.c
index 147d7a5a9b35..e5972b4ef6e8 100644
--- a/drivers/net/phy/mxl-gpy.c
+++ b/drivers/net/phy/mxl-gpy.c
@@ -12,6 +12,7 @@
 #include <linux/mutex.h>
 #include <linux/phy.h>
 #include <linux/polynomial.h>
+#include <linux/property.h>
 #include <linux/netdevice.h>
 
 /* PHY ID */
@@ -292,6 +293,10 @@ static int gpy_probe(struct phy_device *phydev)
 	phydev->priv = priv;
 	mutex_init(&priv->mbox_lock);
 
+	if (gpy_has_broken_mdint(phydev) &&
+	    !device_property_present(dev, "maxlinear,use-broken-interrupts"))
+		phydev->dev_flags |= PHY_F_NO_IRQ;
+
 	fw_version = phy_read(phydev, PHY_FWV);
 	if (fw_version < 0)
 		return fw_version;
-- 
2.30.2


      parent reply	other threads:[~2022-12-28 16:45 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-28 16:40 [PATCH RFC net-next v2 0/2] net: phy: mxl-gpy: broken interrupt fixes Michael Walle
2022-12-28 16:40 ` [PATCH RFC net-next v2 1/2] net: phy: allow a phy to opt-out of interrupt handling Michael Walle
2022-12-28 16:49   ` Florian Fainelli
2022-12-28 16:54     ` Andrew Lunn
2023-01-03 10:27     ` Russell King (Oracle)
2022-12-28 16:40 ` Michael Walle [this message]

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