netdev - [PATCH net-next v2 2/4] net: stmmac: stm32: add WoL from PHY support

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Message-ID: <20250917-wol-smsc-phy-v2-2-105f5eb89b7f@foss.st.com>
Date: Wed, 17 Sep 2025 17:36:37 +0200
From: Gatien Chevallier <gatien.chevallier@...s.st.com>
To: Andrew Lunn <andrew+netdev@...n.ch>,
        "David S. Miller"
	<davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        "Alexandre Torgue" <alexandre.torgue@...s.st.com>,
        Christophe Roullier
	<christophe.roullier@...s.st.com>,
        Andrew Lunn <andrew@...n.ch>,
        "Heiner
 Kallweit" <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "Simon Horman" <horms@...nel.org>,
        Tristram Ha <Tristram.Ha@...rochip.com>,
        "Florian Fainelli" <florian.fainelli@...adcom.com>
CC: <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        Gatien Chevallier <gatien.chevallier@...s.st.com>
Subject: [PATCH net-next v2 2/4] net: stmmac: stm32: add WoL from PHY
 support

If the "st,phy-wol" property is present in the device tree node,
set the STMMAC_FLAG_USE_PHY_WOL flag to use the WoL capability of
the PHY.

Signed-off-by: Gatien Chevallier <gatien.chevallier@...s.st.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
index 77a04c4579c9dbae886a0b387f69610a932b7b9e..6f197789cc2e8018d6959158b795e4bca46869c5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
@@ -106,6 +106,7 @@ struct stm32_dwmac {
 	u32 speed;
 	const struct stm32_ops *ops;
 	struct device *dev;
+	bool phy_wol;
 };
 
 struct stm32_ops {
@@ -433,6 +434,8 @@ static int stm32_dwmac_parse_data(struct stm32_dwmac *dwmac,
 		}
 	}
 
+	dwmac->phy_wol = of_property_read_bool(np, "st,phy-wol");
+
 	return err;
 }
 
@@ -557,6 +560,8 @@ static int stm32_dwmac_probe(struct platform_device *pdev)
 	plat_dat->bsp_priv = dwmac;
 	plat_dat->suspend = stm32_dwmac_suspend;
 	plat_dat->resume = stm32_dwmac_resume;
+	if (dwmac->phy_wol)
+		plat_dat->flags |= STMMAC_FLAG_USE_PHY_WOL;
 
 	ret = stm32_dwmac_init(plat_dat);
 	if (ret)

-- 
2.35.3