netdev - [PATCH net-next] amd-xgbe: let the MAC manage PHY PM

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251119093124.548566-1-Raju.Rangoju@amd.com>
Date: Wed, 19 Nov 2025 15:01:24 +0530
From: Raju Rangoju <Raju.Rangoju@....com>
To: <netdev@...r.kernel.org>
CC: <pabeni@...hat.com>, <kuba@...nel.org>, <edumazet@...gle.com>,
	<davem@...emloft.net>, <andrew+netdev@...n.ch>, <Shyam-sundar.S-k@....com>,
	Raju Rangoju <Raju.Rangoju@....com>
Subject: [PATCH net-next] amd-xgbe: let the MAC manage PHY PM

Use the MAC managed PM flag to indicate that MAC driver takes care of
suspending/resuming the PHY, and reset it when the device is brought up.

Signed-off-by: Raju Rangoju <Raju.Rangoju@....com>
---
 drivers/net/ethernet/amd/xgbe/xgbe-drv.c    | 3 +++
 drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
index f3adf29b222b..1c03fb138ce6 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
@@ -1266,6 +1266,9 @@ static int xgbe_start(struct xgbe_prv_data *pdata)
 
 	clear_bit(XGBE_STOPPED, &pdata->dev_state);
 
+	/* Reset the phy settings */
+	xgbe_phy_reset(pdata);
+
 	return 0;
 
 err_irqs:
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
index 35a381a83647..a68757e8fd22 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
@@ -989,6 +989,7 @@ static int xgbe_phy_find_phy_device(struct xgbe_prv_data *pdata)
 		return ret;
 	}
 	phy_data->phydev = phydev;
+	phy_data->phydev->mac_managed_pm = true;
 
 	xgbe_phy_external_phy_quirks(pdata);
 
-- 
2.34.1