arm64: dts: allwinner: a523: Add EMAC0 ethernet MAC

Add EMAC0 ethernet MAC support which found on A523 variant SoCs,
including the A527/T527 chips. MAC0 is compatible to the A64 chip which
requires an external PHY. This patch only add RGMII pins for now.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin LABBE <clabbe.montjoie@gmail.com>
Signed-off-by: Yixun Lan <dlan@gentoo.org>
Link: https://patch.msgid.link/20250430-01-sun55i-emac0-v3-3-6fc000bbccbd@gentoo.org
Signed-off-by: Chen-Yu Tsai <wens@csie.org>

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index ee485899ba0af69f32727a53de20051a2e31be1d..8b7cbc2e78f500e1dc704e9a6bee87e70285509f 100644 (file)
--- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
@@ -126,6 +126,16 @@
                        interrupt-controller;
                        #interrupt-cells = <3>;
 
+                       rgmii0_pins: rgmii0-pins {
+                               pins = "PH0", "PH1", "PH2", "PH3", "PH4",
+                                      "PH5", "PH6", "PH7", "PH9", "PH10",
+                                      "PH14", "PH15", "PH16", "PH17", "PH18";
+                               allwinner,pinmux = <5>;
+                               function = "emac0";
+                               drive-strength = <40>;
+                               bias-disable;
+                       };
+
                        mmc0_pins: mmc0-pins {
                                pins = "PF0" ,"PF1", "PF2", "PF3", "PF4", "PF5";
                                allwinner,pinmux = <2>;
@@ -409,6 +419,15 @@
                        #size-cells = <0>;
                };
 
+               syscon: syscon@3000000 {
+                       compatible = "allwinner,sun55i-a523-system-control",
+                                    "allwinner,sun50i-a64-system-control";
+                       reg = <0x03000000 0x1000>;
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+                       ranges;
+               };
+
                gic: interrupt-controller@3400000 {
                        compatible = "arm,gic-v3";
                        #address-cells = <1>;
@@ -521,6 +540,28 @@
                        status = "disabled";
                };
 
+               emac0: ethernet@4500000 {
+                       compatible = "allwinner,sun55i-a523-emac0",
+                                    "allwinner,sun50i-a64-emac";
+                       reg = <0x04500000 0x10000>;
+                       clocks = <&ccu CLK_BUS_EMAC0>;
+                       clock-names = "stmmaceth";
+                       resets = <&ccu RST_BUS_EMAC0>;
+                       reset-names = "stmmaceth";
+                       interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
+                       interrupt-names = "macirq";
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&rgmii0_pins>;
+                       syscon = <&syscon>;
+                       status = "disabled";
+
+                       mdio0: mdio {
+                               compatible = "snps,dwmac-mdio";
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                       };
+               };
+
                r_ccu: clock-controller@7010000 {
                        compatible = "allwinner,sun55i-a523-r-ccu";
                        reg = <0x7010000 0x250>;