netdev - [PATCH RFC net-next 15/20] net: dsa: mv88e6xxx: allow generic core to configure global regs

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Message-Id: <E1uzIc4-00000006n0f-2Wye@rmk-PC.armlinux.org.uk>
Date: Thu, 18 Sep 2025 18:40:08 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: netdev@...r.kernel.org
Cc: Andrew Lunn <andrew@...n.ch>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Richard Cochran <richardcochran@...il.com>,
	Vladimir Oltean <olteanv@...il.com>
Subject: [PATCH RFC net-next 15/20] net: dsa: mv88e6xxx: allow generic core to
 configure global regs

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/dsa/mv88e6xxx/hwtstamp.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/hwtstamp.c b/drivers/net/dsa/mv88e6xxx/hwtstamp.c
index 0a56e7bcbcd9..dc92381d5c07 100644
--- a/drivers/net/dsa/mv88e6xxx/hwtstamp.c
+++ b/drivers/net/dsa/mv88e6xxx/hwtstamp.c
@@ -544,6 +544,17 @@ static int mv88e6xxx_hwtstamp_port_setup(struct mv88e6xxx_chip *chip, int port)
 	return 0;
 }
 
+static int mv88e6xxx_ts_global_write(struct device *dev, u8 reg, u16 val)
+{
+	struct mv88e6xxx_chip *chip = dev_to_chip(dev);
+
+	return chip->info->ops->avb_ops->ptp_write(chip, reg, val);
+}
+
+static const struct marvell_ts_ops mv88e6xxx_ts_ops = {
+	.ts_global_write = mv88e6xxx_ts_global_write,
+};
+
 int mv88e6xxx_hwtstamp_setup(struct mv88e6xxx_chip *chip)
 {
 	const struct mv88e6xxx_ptp_ops *ptp_ops = chip->info->ops->ptp_ops;
@@ -564,8 +575,7 @@ int mv88e6xxx_hwtstamp_setup(struct mv88e6xxx_chip *chip)
 			return err;
 	}
 
-	/* Set the ethertype of L2 PTP messages */
-	err = mv88e6xxx_ptp_write(chip, MV88E6XXX_PTP_ETHERTYPE, ETH_P_1588);
+	err = marvell_ts_global_config(chip->dev, &mv88e6xxx_ts_ops);
 	if (err)
 		return err;
 
-- 
2.47.3