dt-bindings: riscv: Add SiFive HiFive Premier P550 board

Add DT binding documentation for the ESWIN EIC7700 SoC and
HiFive Premier P550 Board

Signed-off-by: Pritesh Patel <pritesh.patel@einfochips.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Signed-off-by: Pinkesh Vaghela <pinkesh.vaghela@einfochips.com>
Reviewed-by: Matthias Brugger <matthias.bgg@kernel.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Min Lin <linmin@eswincomputing.com>
Link: https://lore.kernel.org/r/20250825132427.1618089-4-pinkesh.vaghela@einfochips.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/riscv/eswin.yaml

@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/riscv/eswin.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ESWIN SoC-based boards
+
+maintainers:
+  - Min Lin <linmin@eswincomputing.com>
+  - Pinkesh Vaghela <pinkesh.vaghela@einfochips.com>
+  - Pritesh Patel <pritesh.patel@einfochips.com>
+
+description:
+  ESWIN SoC-based boards
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - sifive,hifive-premier-p550
+          - const: eswin,eic7700
+
+additionalProperties: true
+
+...

MAINTAINERS

@@ -9074,6 +9074,13 @@ L:	linux-can@vger.kernel.org
 S:	Maintained
 F:	drivers/net/can/usb/esd_usb.c
 
+ESWIN DEVICETREES
+M:	Min Lin <linmin@eswincomputing.com>
+M:	Pinkesh Vaghela <pinkesh.vaghela@einfochips.com>
+M:	Pritesh Patel <pritesh.patel@einfochips.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/riscv/eswin.yaml
+
 ET131X NETWORK DRIVER
 M:	Mark Einon <mark.einon@gmail.com>
 S:	Odd Fixes