linux-kernel - [RFC PATCH net v1] net: phy: aquantia: Set phy speed to 2.5gbps for AQR115c

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Message-Id: <20240913011635.1286027-1-quic_abchauha@quicinc.com>
Date: Thu, 12 Sep 2024 18:16:35 -0700
From: Abhishek Chauhan <quic_abchauha@...cinc.com>
To: "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Andrew Halaney <ahalaney@...hat.com>,
        "Russell King (Oracle)" <linux@...linux.org.uk>,
        Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
        Brad Griffis <bgriffis@...dia.com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Jon Hunter <jonathanh@...dia.com>
Cc: kernel@...cinc.com
Subject: [RFC PATCH net v1] net: phy: aquantia: Set phy speed to 2.5gbps for AQR115c

Recently we observed that aquantia AQR115c always comes up in
100Mbps mode. AQR115c aquantia chip supports max speed up to
2.5Gbps. Today the AQR115c configuration is done through
aqr113c_config_init which internally calls aqr107_config_init.
aqr113c and aqr107 are both capable of 10Gbps. Whereas AQR115c
supprts max speed of 2.5Gbps only.

Fixes: 0ebc581f8a4b ("net: phy: aquantia: add support for aqr115c")
Signed-off-by: Abhishek Chauhan <quic_abchauha@...cinc.com>
---
 drivers/net/phy/aquantia/aquantia_main.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/phy/aquantia/aquantia_main.c b/drivers/net/phy/aquantia/aquantia_main.c
index e982e9ce44a5..9afc041dbb64 100644
--- a/drivers/net/phy/aquantia/aquantia_main.c
+++ b/drivers/net/phy/aquantia/aquantia_main.c
@@ -499,6 +499,12 @@ static int aqr107_config_init(struct phy_device *phydev)
 	if (!ret)
 		aqr107_chip_info(phydev);
 
+	/* AQR115c supports speed up to 2.5Gbps */
+	if (phydev->interface == PHY_INTERFACE_MODE_2500BASEX) {
+		phy_set_max_speed(phydev, SPEED_2500);
+		phydev->autoneg = AUTONEG_ENABLE;
+	}
+
 	ret = aqr107_set_downshift(phydev, MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT);
 	if (ret)
 		return ret;
@@ -1036,6 +1042,7 @@ static struct phy_driver aqr_driver[] = {
 	.get_sset_count = aqr107_get_sset_count,
 	.get_strings    = aqr107_get_strings,
 	.get_stats      = aqr107_get_stats,
+	.get_features	= genphy_c45_pma_read_abilities,
 	.link_change_notify = aqr107_link_change_notify,
 	.led_brightness_set = aqr_phy_led_brightness_set,
 	.led_hw_is_supported = aqr_phy_led_hw_is_supported,
-- 
2.25.1