ARM: dts: ast2600: Add MDIO devices
There are 4 MDIO bus controllers in AST2600 SOC. Each of them can
connect to one or more PHY chips and is flexible to work with the 4 MAC
devices in AST2600. On AST2600 EVB, MDIO 0,1,2,3 connect to the PHY
chips used by MAC 0,1,2,3 respectively.
Signed-off-by: Dylan Hung <dylan_hung@aspeedtech.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
diff --git a/arch/arm/dts/ast2600.dtsi b/arch/arm/dts/ast2600.dtsi
index 31905fd..98840ce 100644
--- a/arch/arm/dts/ast2600.dtsi
+++ b/arch/arm/dts/ast2600.dtsi
@@ -210,11 +210,47 @@
interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
};
- mdio: ethernet@1e650000 {
- compatible = "aspeed,aspeed-mdio";
- reg = <0x1e650000 0x40>;
- resets = <&rst ASPEED_RESET_MII>;
- status = "disabled";
+ mdio: bus@1e650000 {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 0x1e650000 0x100>;
+
+ mdio0: mdio@0 {
+ compatible = "aspeed,ast2600-mdio";
+ reg = <0 0x8>;
+ resets = <&rst ASPEED_RESET_MII>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_mdio1_default>;
+ status = "disabled";
+ };
+
+ mdio1: mdio@8 {
+ compatible = "aspeed,ast2600-mdio";
+ reg = <0x8 0x8>;
+ resets = <&rst ASPEED_RESET_MII>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_mdio2_default>;
+ status = "disabled";
+ };
+
+ mdio2: mdio@10 {
+ compatible = "aspeed,ast2600-mdio";
+ reg = <0x10 0x8>;
+ resets = <&rst ASPEED_RESET_MII>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_mdio3_default>;
+ status = "disabled";
+ };
+
+ mdio3: mdio@18 {
+ compatible = "aspeed,ast2600-mdio";
+ reg = <0x18 0x8>;
+ resets = <&rst ASPEED_RESET_MII>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_mdio4_default>;
+ status = "disabled";
+ };
};
mac0: ftgmac@1e660000 {