[PATCH v2 4/5] arm64: dts: allwinner: a527: add EMAC0 to Radxa A5E board

Yixun Lan dlan at gentoo.org
Thu Apr 24 03:08:42 PDT 2025


On Radxa A5E board, the EMAC0 connect to an external YT8531C PHY,
which features a 25MHz crystal, and using PH8 pin as PHY reset.

Tested on A5E board with schematic V1.20.

Signed-off-by: Yixun Lan <dlan at gentoo.org>
---
 .../boot/dts/allwinner/sun55i-a527-radxa-a5e.dts      | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts b/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts
index 912e1bda974ce5f64c425e371357b1a78b7c13dd..4ba01ea6f0db793b08fb0645226126535d91c43b 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a527-radxa-a5e.dts
@@ -12,6 +12,7 @@ / {
 	compatible = "radxa,cubie-a5e", "allwinner,sun55i-a527";
 
 	aliases {
+		ethernet0 = &emac0;
 		serial0 = &uart0;
 	};
 
@@ -54,6 +55,24 @@ &ehci1 {
 	status = "okay";
 };
 
+&emac0 {
+	phy-mode = "rgmii-id";
+	phy-handle = <&ext_rgmii_phy>;
+	phy-supply = <&reg_cldo3>;
+
+	allwinner,tx-delay-ps = <300>;
+	allwinner,rx-delay-ps = <400>;
+
+	status = "okay";
+};
+
+&mdio0 {
+	ext_rgmii_phy: ethernet-phy at 1 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <1>;
+	};
+};
+
 &mmc0 {
 	vmmc-supply = <&reg_cldo3>;
 	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_DOWN)>; /* PF6 */

-- 
2.49.0




More information about the linux-arm-kernel mailing list