dts: Add BL61x USB device binding

Adds the binding to enable the USB controller

Signed-off-by: Camille BAUD <[email protected]>

Author: VynDragon

dts/bindings/usb/bflb,bl61x-usb.yaml

@@ -0,0 +1,17 @@
+# Copyright (c) 2024-2025 MASSDRIVER EI (massdriver.space)
+# SPDX-License-Identifier: Apache-2.0
+
+description: |
+  Bouffalolab BL61x USB controller
+  It is similar to FOTG210
+
+compatible: "bflb,bl61x-usb"
+
+include: usb-ep.yaml
+
+properties:
+  reg:
+    required: true
+
+  interrupts:
+    required: true

dts/riscv/bflb/bl61x.dtsi

@@ -192,6 +192,17 @@
 			size = <512>;
 		};
 
+		usbd: usbd@20072000 {
+			compatible = "bflb,bl61x-usb";
+			reg = <0x20072000 0x1000>;
+			num-bidir-endpoints = <5>;
+			maximum-speed = "high-speed";
+			status = "disabled";
+
+			interrupts = <37 2>;
+			interrupt-parent = <&clic>;
+		};
+
 		sram0: memory@62fc0000 {
 			compatible = "mmio-sram";
 			reg = <0x62FC0000 DT_SIZE_K(320)>;