musb: adi: documentation: Adding ADI musb driver

Adding documentation from legacy kernel for ADI musb glue
layer

Author: UtsavAgarwalADI

Documentation/devicetree/bindings/usb/adi,musb.yaml

@@ -0,0 +1,85 @@
+
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/adi,musb.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Inventra USB Glue Layer for Analog Devices SC5XX Processors
+
+maintainers:
+  - Nathan Barrett-Morrison <nathan.morrison@timesys.com>
+  - Greg Malysa <greg.malysa@timesys.com>
+
+description: |
+    For the Inventra-based USB IP on the ADI SC58X and SC57X processors
+    (glues to musb_core.c)
+
+properties:
+  compatible:
+    enum:
+      - adi,musb
+
+  reg:
+    maxItems: 1
+
+  "reg-names":
+    maxItems: 1
+
+  "interrupts":
+    maxItems: 1
+
+  "interrupt-names":
+    maxItems: 1
+
+  "spu_securep_id":
+    maxItems: 1
+
+  "mentor,multipoint":
+    maxItems: 1
+
+  "mentor,num-eps":
+    maxItems: 1
+
+  "mentor,ram-bits":
+    maxItems: 1
+
+  "mentor,power":
+    maxItems: 1
+
+  "phys":
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - "reg-names"
+  - "interrupts"
+  - "interrupt-names"
+  - "spu_securep_id"
+  - "mentor,multipoint"
+  - "mentor,num-eps"
+  - "mentor,ram-bits"
+  - "mentor,power"
+  - "phys"
+
+additionalProperties: false
+
+examples:
+  - |
+    usb0: usb@310c1000 {
+      compatible = "adi,musb";
+      reg = <0x310c1000 0x390>;
+      reg-names = "mc";
+      interrupts = <GIC_SPI 132 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
+      interrupt-names = "mc", "dma";
+      spu_securep_id = <153>;
+
+      mentor,multipoint = <1>;
+      mentor,num-eps = <16>;
+      mentor,ram-bits = <12>;
+      mentor,power = <500>;
+      phys = <&usb0_phy>;
+      status = "disabled";
+    };