[PATCH] dt-bindings: soc: document Casio fx-9750GIII

[Artem Novak <artem122novak@gmail.com>]

Document for the Casio fx-9750GIII graphing calculator,
which is based on the Renesas SH7305 (SH4A) processor.

Add the Casio vendor prefix and the board compatible
binding.

Signed-off-by: Artem Novak <artem122novak@gmail.com>
---
 .../soc/renesas/casio,fx-9750giii.yaml        | 33 +++++++++++++++++++
 .../devicetree/bindings/vendor-prefixes.yaml  |  2 ++
 2 files changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/renesas/casio,fx-9750giii.yaml

diff --git a/Documentation/devicetree/bindings/soc/renesas/casio,fx-9750giii.yaml b/Documentation/devicetree/bindings/soc/renesas/casio,fx-9750giii.yaml
new file mode 100644
index 000000000000..f3c1c02f1bd5
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/renesas/casio,fx-9750giii.yaml
@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/renesas/casio,fx-9750giii.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Casio fx-9750GIII Graphing Calculator
+
+maintainers:
+  - Artem Novak <artem122novak@gmail.com>
+
+description:
+  The Casio fx-9750GIII graphing calculator is based on
+  the Renesas SH7305 processor.
+
+select:
+  properties:
+    compatible:
+      contains:
+        const: casio,fx-9750giii
+  required:
+    - compatible
+
+properties:
+  compatible:
+    items:
+      - const: casio,fx-9750giii
+      - const: renesas,sh7305
+
+required:
+  - compatible
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index ba2002969373..78ba9c29cb56 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -301,6 +301,8 @@ patternProperties:
     description: Capella Microsystems, Inc
   "^cascoda,.*":
     description: Cascoda, Ltd.
+  "^casio,.*":
+    description: Casio Computer Co., Ltd.
   "^catalyst,.*":
     description: Catalyst Semiconductor, Inc.
   "^cavium,.*":
-- 
2.56.0