linux-kernel - [PATCH net-next v6 07/11] net: dsa: realtek: get internal MDIO node by name

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Message-Id: <20240209-realtek_reverse-v6-7-0662f8cbc7b5@gmail.com>
Date: Fri, 09 Feb 2024 02:03:43 -0300
From: Luiz Angelo Daros de Luca <luizluca@...il.com>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Alvin Šipraga <alsi@...g-olufsen.dk>, 
 Andrew Lunn <andrew@...n.ch>, Florian Fainelli <f.fainelli@...il.com>, 
 Vladimir Oltean <olteanv@...il.com>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Russell King <linux@...linux.org.uk>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Luiz Angelo Daros de Luca <luizluca@...il.com>, 
 Florian Fainelli <florian.fainelli@...adcom.com>
Subject: [PATCH net-next v6 07/11] net: dsa: realtek: get internal MDIO
 node by name

The binding docs requires for SMI-connected devices that the switch
must have a child node named "mdio" and with a compatible string of
"realtek,smi-mdio". Meanwile, for MDIO-connected switches, the binding
docs only requires a child node named "mdio".

This patch changes the driver to use the common denominator for both
interfaces, looking for the MDIO node by name, ignoring the compatible
string.

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@...il.com>
Reviewed-by: Vladimir Oltean <olteanv@...il.com>
Reviewed-by: Florian Fainelli <florian.fainelli@...adcom.com>
---
 drivers/net/dsa/realtek/realtek-smi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c
index 10de30d3e044..1fa8e9cb1a10 100644
--- a/drivers/net/dsa/realtek/realtek-smi.c
+++ b/drivers/net/dsa/realtek/realtek-smi.c
@@ -333,7 +333,7 @@ static int realtek_smi_setup_mdio(struct dsa_switch *ds)
 	struct device_node *mdio_np;
 	int ret;

-	mdio_np = of_get_compatible_child(priv->dev->of_node, "realtek,smi-mdio");
+	mdio_np = of_get_child_by_name(priv->dev->of_node, "mdio");
 	if (!mdio_np) {
 		dev_err(priv->dev, "no MDIO bus node\n");
 		return -ENODEV;

-- 
2.43.0