dt-bindings: arm: Document Bitmain BM1880 SoC

Document Bitmain BM1880 SoC from Bitmain Technologies Ltd along with the
Sophon Edge board.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/Documentation/devicetree/bindings/arm/bitmain.yaml b/Documentation/devicetree/bindings/arm/bitmain.yaml
new file mode 100644 (file)
index 0000000..0efdb4a
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/bitmain.yaml
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/bitmain.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bitmain platform device tree bindings
+
+maintainers:
+  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+
+properties:
+  compatible:
+    items:
+      - enum:
+        - bitmain,sophon-edge
+      - const: bitmain,bm1880
+...