Author: Thomas Kupper <thomas.kupper@gmail.com>
Date:   Wed May 24 21:14:17 2023 +0200

kernel: phy: add Aquantia PHY AQR111 & AQR111B0

Add the IDs for Aquantia PHY AQR111 and AQR111B0 as found in the GPL sources
of the Netgear RAX120v2 firmware v1.2.8.40.

This is a 5GbE chip but it reports support for 10G. Implement config_init()
to set max speed to 5G.

Signed-off-by: Thomas Kupper <thomas.kupper@gmail.com>
--- a/drivers/net/phy/aquantia_main.c
+++ b/drivers/net/phy/aquantia_main.c
@@ -20,6 +20,8 @@
 #define PHY_ID_AQR105	0x03a1b4a2
 #define PHY_ID_AQR106	0x03a1b4d0
 #define PHY_ID_AQR107	0x03a1b4e0
+#define PHY_ID_AQR111	0x03a1b610
+#define PHY_ID_AQR111B0	0x03a1b612
 #define PHY_ID_AQR112	0x03a1b662
 #define PHY_ID_AQR112C	0x03a1b790
 #define PHY_ID_AQR112R	0x31c31d12
@@ -686,6 +688,33 @@ static int aqcs109_config_init(struct ph
 	return aqr107_set_downshift(phydev, MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT);
 }
 
+static int aqr111_config_init(struct phy_device *phydev)
+{
+	int ret;
+
+	/* Check that the PHY interface type is compatible */
+	if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
+	    phydev->interface != PHY_INTERFACE_MODE_2500BASEX &&
+	    phydev->interface != PHY_INTERFACE_MODE_XGMII &&
+	    phydev->interface != PHY_INTERFACE_MODE_USXGMII &&
+	    phydev->interface != PHY_INTERFACE_MODE_10GKR &&
+	    phydev->interface != PHY_INTERFACE_MODE_10GBASER)
+		return -ENODEV;
+
+	WARN(phydev->interface == PHY_INTERFACE_MODE_XGMII,
+	     "Your devicetree is out of date, please update it. The AQR107 family doesn't support XGMII, maybe you mean USXGMII.\n");
+
+	ret = aqr107_wait_reset_complete(phydev);
+	if (!ret)
+		aqr107_chip_info(phydev);
+
+	/* AQR111 reports supporting speed up to 10G, however only speeds up to 5G are supported. */
+	ret = phy_set_max_speed(phydev, SPEED_5000);
+	if (ret)
+		return ret;
+
+	return aqr107_set_downshift(phydev, MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT);
+}
 static void aqr107_link_change_notify(struct phy_device *phydev)
 {
 	u8 fw_major, fw_minor;
@@ -905,6 +934,42 @@ static struct phy_driver aqr_driver[] =
 	.link_change_notify = aqr107_link_change_notify,
 },
 {
+	PHY_ID_MATCH_MODEL(PHY_ID_AQR111),
+	.name		= "Aquantia AQR111",
+	.probe		= aqr107_probe,
+	.config_init	= aqr111_config_init,
+	.config_aneg    = aqr_config_aneg,
+	.config_intr	= aqr_config_intr,
+	.handle_interrupt = aqr_handle_interrupt,
+	.read_status	= aqr107_read_status,
+	.get_tunable    = aqr107_get_tunable,
+	.set_tunable    = aqr107_set_tunable,
+	.suspend	= aqr107_suspend,
+	.resume		= aqr107_resume,
+	.get_sset_count	= aqr107_get_sset_count,
+	.get_strings	= aqr107_get_strings,
+	.get_stats	= aqr107_get_stats,
+	.link_change_notify = aqr107_link_change_notify,
+},
+{
+	PHY_ID_MATCH_MODEL(PHY_ID_AQR111B0),
+	.name		= "Aquantia AQR111B0",
+	.probe		= aqr107_probe,
+	.config_init	= aqr111_config_init,
+	.config_aneg    = aqr_config_aneg,
+	.config_intr	= aqr_config_intr,
+	.handle_interrupt = aqr_handle_interrupt,
+	.read_status	= aqr107_read_status,
+	.get_tunable    = aqr107_get_tunable,
+	.set_tunable    = aqr107_set_tunable,
+	.suspend	= aqr107_suspend,
+	.resume		= aqr107_resume,
+	.get_sset_count	= aqr107_get_sset_count,
+	.get_strings	= aqr107_get_strings,
+	.get_stats	= aqr107_get_stats,
+	.link_change_notify = aqr107_link_change_notify,
+},
+{
 	PHY_ID_MATCH_MODEL(PHY_ID_AQR112),
 	.name		= "Aquantia AQR112",
 	.probe		= aqr107_probe,
@@ -970,6 +1035,8 @@ static struct mdio_device_id __maybe_unu
 	{ PHY_ID_MATCH_MODEL(PHY_ID_AQR105) },
 	{ PHY_ID_MATCH_MODEL(PHY_ID_AQR106) },
 	{ PHY_ID_MATCH_MODEL(PHY_ID_AQR107) },
+	{ PHY_ID_MATCH_MODEL(PHY_ID_AQR111) },
+	{ PHY_ID_MATCH_MODEL(PHY_ID_AQR111B0) },
 	{ PHY_ID_MATCH_MODEL(PHY_ID_AQR112) },
 	{ PHY_ID_MATCH_MODEL(PHY_ID_AQR112C) },
 	{ PHY_ID_MATCH_MODEL(PHY_ID_AQR112R) },