linux-kernel - [PATCH RFC WIP 2/2] net: stmmac: dwmac-rk: add support for PHY wake on LAN

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Message-Id: <20231123-dwmac-rk_phy_wol-v1-2-bf4e718081b9@wolfvision.net>
Date:   Thu, 23 Nov 2023 13:14:14 +0100
From:   Javier Carrasco <javier.carrasco@...fvision.net>
To:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        David Wu <david.wu@...k-chips.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        Javier Carrasco <javier.carrasco@...fvision.net>
Subject: [PATCH RFC WIP 2/2] net: stmmac: dwmac-rk: add support for PHY
 wake on LAN

PHY WOL will be used if the rockhip,phy-wol property is defined. MAC WOL
will be preferred otherwise.

Signed-off-by: Javier Carrasco <javier.carrasco@...fvision.net>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 382e8de1255d..c543566b4f90 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -1694,6 +1694,11 @@ static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev,
 	dev_info(dev, "integrated PHY? (%s).\n",
 		 bsp_priv->integrated_phy ? "yes" : "no");
 
+	if (of_property_read_bool(dev->of_node, "rockchip,phy-wol"))
+		plat->flags |= STMMAC_FLAG_USE_PHY_WOL;
+	else
+		plat->flags &= ~STMMAC_FLAG_USE_PHY_WOL;
+
 	bsp_priv->pdev = pdev;
 
 	return bsp_priv;

-- 
2.39.2