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From: Florian Fainelli <florian.fainelli@broadcom.com>
To: netdev@vger.kernel.org
Cc: Doug Berger <opemdmb@gmail.com>, Doug Berger <opendmb@gmail.com>,
	Florian Fainelli <florian.fainelli@broadcom.com>,
	Broadcom internal kernel review list
	<bcm-kernel-feedback-list@broadcom.com>,
	Andrew Lunn <andrew+netdev@lunn.ch>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	linux-kernel@vger.kernel.org (open list)
Subject: [PATCH net-next] net: bcmgenet: update PHY power down
Date: Thu, 12 Jun 2025 14:04:49 -0700	[thread overview]
Message-ID: <20250612210449.3686273-1-florian.fainelli@broadcom.com> (raw)

From: Doug Berger <opemdmb@gmail.com>

The disable sequence in bcmgenet_phy_power_set() is updated to
match the inverse sequence and timing (and spacing) of the
enable sequence. This ensures that LEDs driven by the GENET IP
are disabled when the GPHY is powered down.

Signed-off-by: Doug Berger <opendmb@gmail.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
---
 drivers/net/ethernet/broadcom/genet/bcmmii.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index b6437ba7a2eb..573e8b279e52 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -169,10 +169,15 @@ void bcmgenet_phy_power_set(struct net_device *dev, bool enable)
 
 			reg &= ~EXT_GPHY_RESET;
 		} else {
+			reg |= EXT_GPHY_RESET;
+			bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
+			mdelay(1);
+
 			reg |= EXT_CFG_IDDQ_BIAS | EXT_CFG_PWR_DOWN |
-			       EXT_GPHY_RESET | EXT_CFG_IDDQ_GLOBAL_PWR;
+			       EXT_CFG_IDDQ_GLOBAL_PWR;
 			bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
 			mdelay(1);
+
 			reg |= EXT_CK25_DIS;
 		}
 		bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
-- 
2.43.0


             reply	other threads:[~2025-06-12 21:06 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-12 21:04 Florian Fainelli [this message]
2025-06-12 21:07 ` Florian Fainelli

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