linux-kernel - [PATCH net-next v2 1/2] net: phy: phy-c45: Auto-negotiation restart status check for T1 phy

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Message-ID: <20241216155830.501596-2-Tarun.Alle@microchip.com>
Date: Mon, 16 Dec 2024 21:28:29 +0530
From: Tarun Alle <Tarun.Alle@...rochip.com>
To: <arun.ramadoss@...rochip.com>, <UNGLinuxDriver@...rochip.com>,
	<andrew@...n.ch>, <hkallweit1@...il.com>, <linux@...linux.org.uk>,
	<davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH net-next v2 1/2] net: phy: phy-c45: Auto-negotiation restart status check for T1 phy

Add support for auto-negotiation restart status check for T1 phys.

Signed-off-by: Tarun Alle <Tarun.Alle@...rochip.com>
---
v1 -> v2
- Separated out the fix patch.
- Changed the commit message.
---
 drivers/net/phy/phy-c45.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c
index 0dac08e85304..58be2d534b5c 100644
--- a/drivers/net/phy/phy-c45.c
+++ b/drivers/net/phy/phy-c45.c
@@ -418,11 +418,14 @@ EXPORT_SYMBOL_GPL(genphy_c45_aneg_done);
 int genphy_c45_read_link(struct phy_device *phydev)
 {
 	u32 mmd_mask = MDIO_DEVS_PMAPMD;
+	u16 reg = MDIO_CTRL1;
 	int val, devad;
 	bool link = true;
 
 	if (phydev->c45_ids.mmds_present & MDIO_DEVS_AN) {
-		val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_CTRL1);
+		if (genphy_c45_baset1_able(phydev))
+			reg = MDIO_AN_T1_CTRL;
+		val = phy_read_mmd(phydev, MDIO_MMD_AN, reg);
 		if (val < 0)
 			return val;
 
-- 
2.34.1