diff mbox series

[v1,4/6] net: mv88e61xx: Directly access the switch chip

Message ID 20230601100005.2216345-5-lukma@denx.de
State Changes Requested
Delegated to: Ramon Fried
Headers show
Series Provide support for mv88e6020 Marvell switch | expand

Commit Message

Lukasz Majewski June 1, 2023, 10 a.m. UTC 
The mv88e6020 is accessed in a direct way (i.e. with direct read and
write to mdio bus). The only necessary indirection is required when
accessing its PHY registers.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
---

 drivers/net/phy/mv88e61xx.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/phy/mv88e61xx.c b/drivers/net/phy/mv88e61xx.c
index c19c3dfa8b6d..c9917953f3d7 100644
--- a/drivers/net/phy/mv88e61xx.c
+++ b/drivers/net/phy/mv88e61xx.c
@@ -261,8 +261,11 @@  static int mv88e61xx_reg_read(struct phy_device *phydev, int dev, int reg)
 	int smi_addr = priv->smi_addr;
 	int res;
 
-	/* In single-chip mode, the device can be addressed directly */
-	if (smi_addr == 0)
+	/*
+	 * In single-chip or dual-chip (like mv88e6020) mode, the device can
+	 * be addressed directly.
+	 */
+	if (smi_addr == 0 || priv->direct_access)
 		return mdio_bus->read(mdio_bus, dev, MDIO_DEVAD_NONE, reg);
 
 	/* Wait for the bus to become free */
@@ -298,11 +301,13 @@  static int mv88e61xx_reg_write(struct phy_device *phydev, int dev, int reg,
 	int smi_addr = priv->smi_addr;
 	int res;
 
-	/* In single-chip mode, the device can be addressed directly */
-	if (smi_addr == 0) {
+	/*
+	 * In single-chip or dual-chip (like mv88e6020) mode, the device can
+	 * be addressed directly.
+	 */
+	if (smi_addr == 0 || priv->direct_access)
 		return mdio_bus->write(mdio_bus, dev, MDIO_DEVAD_NONE, reg,
 				val);
-	}
 
 	/* Wait for the bus to become free */
 	res = mv88e61xx_smi_wait(mdio_bus, smi_addr);