linux-kernel - [PATCH net-next 2/2] net: stmmac: dwmac-imx: add support for PHY WOL

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Date: Wed,  6 Mar 2024 18:24:09 +0100
From: Catalin Popescu <catalin.popescu@...ca-geosystems.com>
To: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	robh@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	festevam@...il.com,
	xiaoning.wang@....com,
	linux-imx@....com,
	alexandre.torgue@...s.st.com,
	joabreu@...opsys.com,
	mcoquelin.stm32@...il.com
Cc: netdev@...r.kernel.org,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	bsp-development.geo@...ca-geosystems.com,
	m.felsch@...gutronix.de,
	Catalin Popescu <catalin.popescu@...ca-geosystems.com>
Subject: [PATCH net-next 2/2] net: stmmac: dwmac-imx: add support for PHY WOL

Add support for PHY WOL capability into dwmac-imx MAC driver.
This is required to enable WOL feature on a platform where MAC
WOL capability is not sufficient and WOL capability built into
the PHY is actually needed.

Signed-off-by: Catalin Popescu <catalin.popescu@...ca-geosystems.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
index 6b65420e11b5..9d7278c083bf 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
@@ -59,6 +59,7 @@ struct imx_priv_data {
 	struct regmap *intf_regmap;
 	u32 intf_reg_off;
 	bool rmii_refclk_ext;
+	bool phy_wol;
 	void __iomem *base_addr;
 
 	const struct imx_dwmac_ops *ops;
@@ -312,6 +313,8 @@ imx_dwmac_parse_dt(struct imx_priv_data *dwmac, struct device *dev)
 		}
 	}
 
+	dwmac->phy_wol = of_property_read_bool(np, "nxp,phy-wol");
+
 	return err;
 }
 
@@ -353,6 +356,11 @@ static int imx_dwmac_probe(struct platform_device *pdev)
 	if (data->flags & STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY)
 		plat_dat->flags |= STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY;
 
+	if (dwmac->phy_wol)
+		plat_dat->flags |= STMMAC_FLAG_USE_PHY_WOL;
+	else
+		plat_dat->flags &= ~STMMAC_FLAG_USE_PHY_WOL;
+
 	/* Default TX Q0 to use TSO and rest TXQ for TBS */
 	for (int i = 1; i < plat_dat->tx_queues_to_use; i++)
 		plat_dat->tx_queues_cfg[i].tbs_en = 1;
-- 
2.34.1