net: pcs: lynx: support phy-mode = "10g-qxgmii"

This is a SerDes protocol with 4 ports multiplexed over a single SerDes
lane, each port capable of 10/100/1000/2500. It is used on LS1028A lane
1, connected to the 4 switch ports.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20250903130730.2836022-2-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/pcs/pcs-lynx.c b/drivers/net/pcs/pcs-lynx.c
index 23b40e9eacbbcdb1521b9d087b64fc185038769a..677f92883976ca3dc014b49e6eb7e4bb88596389 100644 (file)
--- a/drivers/net/pcs/pcs-lynx.c
+++ b/drivers/net/pcs/pcs-lynx.c
@@ -49,6 +49,7 @@ static unsigned int lynx_pcs_inband_caps(struct phylink_pcs *pcs,
                return LINK_INBAND_DISABLE;
 
        case PHY_INTERFACE_MODE_USXGMII:
+       case PHY_INTERFACE_MODE_10G_QXGMII:
                return LINK_INBAND_ENABLE;
 
        default:
@@ -115,6 +116,7 @@ static void lynx_pcs_get_state(struct phylink_pcs *pcs, unsigned int neg_mode,
                lynx_pcs_get_state_2500basex(lynx->mdio, state);
                break;
        case PHY_INTERFACE_MODE_USXGMII:
+       case PHY_INTERFACE_MODE_10G_QXGMII:
                lynx_pcs_get_state_usxgmii(lynx->mdio, state);
                break;
        case PHY_INTERFACE_MODE_10GBASER:
@@ -170,6 +172,7 @@ static int lynx_pcs_config_giga(struct mdio_device *pcs,
 }
 
 static int lynx_pcs_config_usxgmii(struct mdio_device *pcs,
+                                  phy_interface_t interface,
                                   const unsigned long *advertising,
                                   unsigned int neg_mode)
 {
@@ -177,7 +180,8 @@ static int lynx_pcs_config_usxgmii(struct mdio_device *pcs,
        int addr = pcs->addr;
 
        if (neg_mode != PHYLINK_PCS_NEG_INBAND_ENABLED) {
-               dev_err(&pcs->dev, "USXGMII only supports in-band AN for now\n");
+               dev_err(&pcs->dev, "%s only supports in-band AN for now\n",
+                       phy_modes(interface));
                return -EOPNOTSUPP;
        }
 
@@ -208,7 +212,8 @@ static int lynx_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,
                }
                break;
        case PHY_INTERFACE_MODE_USXGMII:
-               return lynx_pcs_config_usxgmii(lynx->mdio, advertising,
+       case PHY_INTERFACE_MODE_10G_QXGMII:
+               return lynx_pcs_config_usxgmii(lynx->mdio, ifmode, advertising,
                                               neg_mode);
        case PHY_INTERFACE_MODE_10GBASER:
                /* Nothing to do here for 10GBASER */
@@ -317,6 +322,7 @@ static void lynx_pcs_link_up(struct phylink_pcs *pcs, unsigned int neg_mode,
                lynx_pcs_link_up_2500basex(lynx->mdio, neg_mode, speed, duplex);
                break;
        case PHY_INTERFACE_MODE_USXGMII:
+       case PHY_INTERFACE_MODE_10G_QXGMII:
                /* At the moment, only in-band AN is supported for USXGMII
                 * so nothing to do in link_up
                 */
@@ -341,6 +347,7 @@ static const phy_interface_t lynx_interfaces[] = {
        PHY_INTERFACE_MODE_2500BASEX,
        PHY_INTERFACE_MODE_10GBASER,
        PHY_INTERFACE_MODE_USXGMII,
+       PHY_INTERFACE_MODE_10G_QXGMII,
 };
 
 static struct phylink_pcs *lynx_pcs_create(struct mdio_device *mdio)