[PATCH net-next 0/2] net: phy: marvell: add RGMII-to-Copper mode configuration

[PATCH net-next 0/2] net: phy: marvell: add RGMII-to-Copper mode configuration

[Paul Louvel]

Hi,

This series add the configuration of the RGMII-to-Copper MAC interface
for Marvell 88E1510/88E1518/88E1512/88E1514 PHYs.

Patch #1 is a preparation commit to factor out common code.

Signed-off-by: Paul Louvel <paul.louvel@bootlin.com>
---
Paul Louvel (2):
      net: phy: marvell: move mode configuration into standalone function
      net: phy: marvell: add RGMII-to-Copper mode configuration

 drivers/net/phy/marvell.c | 69 ++++++++++++++++++++---------------------------
 1 file changed, 29 insertions(+), 40 deletions(-)
---
base-commit: 7b6ab4dbc156e2f96419715130b3d5738a306c93
change-id: 20261109-marvell-phy-rgmii-60a8bf619582

Best regards,
--  
Paul Louvel, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

[PATCH net-next 1/2] net: phy: marvell: move mode configuration into standalone function

[Paul Louvel]

Move the configuration of the m88e151x out of the
m88e1510_port_configure_serdes() function, so that other part of the
driver can use it.

Signed-off-by: Paul Louvel (Schneider Electric) <paul.louvel@bootlin.com>
---
 drivers/net/phy/marvell.c | 38 ++++++++++++++++++++++----------------
 1 file changed, 22 insertions(+), 16 deletions(-)

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index 2c688d661297..aef5f8279133 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -1332,6 +1332,27 @@ static int m88e1318_config_init(struct phy_device *phydev)
 	return marvell_config_init(phydev);
 }
 
+static int m88e1510_config_mode(struct phy_device *phydev, u16 mode)
+{
+	int oldpage;
+	int ret = 0;
+
+	oldpage = phy_select_page(phydev, MII_MARVELL_MODE_PAGE);
+	if (oldpage < 0)
+		goto error;
+
+	ret = __phy_modify(phydev, MII_88E1510_GEN_CTRL_REG_1,
+			   MII_88E1510_GEN_CTRL_REG_1_MODE_MASK, mode);
+	if (ret < 0)
+		goto error;
+
+	ret = __phy_set_bits(phydev, MII_88E1510_GEN_CTRL_REG_1,
+			     MII_88E1510_GEN_CTRL_REG_1_RESET);
+
+error:
+	return phy_restore_page(phydev, oldpage, ret);
+}
+
 static int m88e1510_config_init(struct phy_device *phydev)
 {
 	static const struct {
@@ -3656,8 +3677,6 @@ static int m88e1510_port_configure_serdes(struct phy_port *port, bool enable,
 {
 	struct phy_device *phydev = port_phydev(port);
 	struct device *dev;
-	int oldpage;
-	int ret = 0;
 	u16 mode;
 
 	dev = &phydev->mdio.dev;
@@ -3685,20 +3704,7 @@ static int m88e1510_port_configure_serdes(struct phy_port *port, bool enable,
 		mode = MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII;
 	}
 
-	oldpage = phy_select_page(phydev, MII_MARVELL_MODE_PAGE);
-	if (oldpage < 0)
-		goto error;
-
-	ret = __phy_modify(phydev, MII_88E1510_GEN_CTRL_REG_1,
-			   MII_88E1510_GEN_CTRL_REG_1_MODE_MASK, mode);
-	if (ret < 0)
-		goto error;
-
-	ret = __phy_set_bits(phydev, MII_88E1510_GEN_CTRL_REG_1,
-			     MII_88E1510_GEN_CTRL_REG_1_RESET);
-
-error:
-	return phy_restore_page(phydev, oldpage, ret);
+	return m88e1510_config_mode(phydev, mode);
 }
 
 static const struct phy_port_ops m88e1510_serdes_port_ops = {

-- 
2.56.0

[PATCH net-next 2/2] net: phy: marvell: add RGMII-to-Copper mode configuration

[Paul Louvel]

The driver currently programs it only for SGMII-to-Copper, based on the
PHY interface mode.

Some MAC connect to the PHY via RGMII. Add code to configure the device
in m88e1510_config_init().

Signed-off-by: Paul Louvel (Schneider Electric) <paul.louvel@bootlin.com>
---
 drivers/net/phy/marvell.c | 31 +++++++------------------------
 1 file changed, 7 insertions(+), 24 deletions(-)

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index aef5f8279133..b8b466eb1c45 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -1394,31 +1394,14 @@ static int m88e1510_config_init(struct phy_device *phydev)
 	if (err < 0)
 		return err;
 
-	/* SGMII-to-Copper mode initialization */
-	if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
-		/* Select page 18 */
-		err = marvell_set_page(phydev, 18);
-		if (err < 0)
-			return err;
-
-		/* In reg 20, write MODE[2:0] = 0x1 (SGMII to Copper) */
-		err = phy_modify(phydev, MII_88E1510_GEN_CTRL_REG_1,
-				 MII_88E1510_GEN_CTRL_REG_1_MODE_MASK,
-				 MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII);
-		if (err < 0)
-			return err;
-
-		/* PHY reset is necessary after changing MODE[2:0] */
-		err = phy_set_bits(phydev, MII_88E1510_GEN_CTRL_REG_1,
-				   MII_88E1510_GEN_CTRL_REG_1_RESET);
-		if (err < 0)
-			return err;
+	/* RGMII/SGMII-to-Copper mode initialization */
+	if (phydev->interface == PHY_INTERFACE_MODE_SGMII)
+		err = m88e1510_config_mode(phydev, MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII);
+	else if (phy_interface_is_rgmii(phydev))
+		err = m88e1510_config_mode(phydev, MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII);
+	if (err < 0)
+		return err;
 
-		/* Reset page selection */
-		err = marvell_set_page(phydev, MII_MARVELL_COPPER_PAGE);
-		if (err < 0)
-			return err;
-	}
 	err = m88e1011_set_downshift(phydev, 3);
 	if (err < 0)
 		return err;

-- 
2.56.0

Re: [PATCH net-next 2/2] net: phy: marvell: add RGMII-to-Copper mode configuration

[Marek Behún]

On Mon, Nov 09, 2026 at 01:44:56PM +0100, Paul Louvel wrote:
> The driver currently programs it only for SGMII-to-Copper, based on the
> PHY interface mode.
> 
> Some MAC connect to the PHY via RGMII. Add code to configure the device
> in m88e1510_config_init().
> 
> Signed-off-by: Paul Louvel (Schneider Electric) <paul.louvel@bootlin.com>
> ---
>  drivers/net/phy/marvell.c | 31 +++++++------------------------
>  1 file changed, 7 insertions(+), 24 deletions(-)
> 
> diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
> index aef5f8279133..b8b466eb1c45 100644
> --- a/drivers/net/phy/marvell.c
> +++ b/drivers/net/phy/marvell.c
> @@ -1394,31 +1394,14 @@ static int m88e1510_config_init(struct phy_device *phydev)
>  	if (err < 0)
>  		return err;
>  
> -	/* SGMII-to-Copper mode initialization */
> -	if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
> -		/* Select page 18 */
> -		err = marvell_set_page(phydev, 18);
> -		if (err < 0)
> -			return err;
> -
> -		/* In reg 20, write MODE[2:0] = 0x1 (SGMII to Copper) */
> -		err = phy_modify(phydev, MII_88E1510_GEN_CTRL_REG_1,
> -				 MII_88E1510_GEN_CTRL_REG_1_MODE_MASK,
> -				 MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII);
> -		if (err < 0)
> -			return err;
> -
> -		/* PHY reset is necessary after changing MODE[2:0] */
> -		err = phy_set_bits(phydev, MII_88E1510_GEN_CTRL_REG_1,
> -				   MII_88E1510_GEN_CTRL_REG_1_RESET);
> -		if (err < 0)
> -			return err;
> +	/* RGMII/SGMII-to-Copper mode initialization */
> +	if (phydev->interface == PHY_INTERFACE_MODE_SGMII)
> +		err = m88e1510_config_mode(phydev, MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII);

This first part belongs either to the first patch (deduplicates the mode setting code)
or to a separate patch.

Marek

> +	else if (phy_interface_is_rgmii(phydev))
> +		err = m88e1510_config_mode(phydev, MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII);
> +	if (err < 0)
> +		return err;
>  
> -		/* Reset page selection */
> -		err = marvell_set_page(phydev, MII_MARVELL_COPPER_PAGE);
> -		if (err < 0)
> -			return err;
> -	}
>  	err = m88e1011_set_downshift(phydev, 3);
>  	if (err < 0)
>  		return err;
> 
> -- 
> 2.56.0
> 
>