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Message-ID: <20241004061541.1666280-1-nobuhiro1.iwamatsu@toshiba.co.jp>
Date: Fri,  4 Oct 2024 15:15:41 +0900
From: Nobuhiro Iwamatsu <iwamatsu@...auri.org>
To: robh+dt@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	dinguyen@...nel.org
Cc: linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Nobuhiro Iwamatsu <iwamatsu@...auri.org>,
	stable@...r.kernel.org
Subject: [PATCH] ARM: dts: socfpga: sodia: Fix mdio bus probe and PHY ID

From: Nobuhiro Iwamatsu <iwamatsu@...auri.org>

On SoCFPGA/Sodia board, mdio bus cannot be probed, so the PHY cannot be
found and the network device does not work.

```
stmmaceth ff702000.ethernet eth0: __stmmac_open: Cannot attach to PHY (error: -19)
```

To probe the mdio bus, add "snps,dwmac-mdio" as compatible string of the
mdio bus. Also the PHY ID connected to this board is 4. Therefore, change
to 4.

Fixes: 8fbc10b995a5 ("net: stmmac: check fwnode for phy device before scanning for phy")
Cc: stable@...r.kernel.org # 6.3+
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@...auri.org>
---
 arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts b/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts
index ce0d6514eeb571..e4794ccb8e413f 100644
--- a/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts
+++ b/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts
@@ -66,8 +66,10 @@ &gmac1 {
 	mdio0 {
 		#address-cells = <1>;
 		#size-cells = <0>;
-		phy0: ethernet-phy@0 {
-			reg = <0>;
+		compatible = "snps,dwmac-mdio";
+
+		phy0: ethernet-phy@4 {
+			reg = <4>;
 			rxd0-skew-ps = <0>;
 			rxd1-skew-ps = <0>;
 			rxd2-skew-ps = <0>;
-- 
2.45.2


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