The mcp251xfd has two pins that can be used as gpio. Add gpio-controller
property to binding description.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Gregor Herburger <gregor.herburger@ew.tq-group.com>
---
 Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml b/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml
index 2a98b26630cb..e9605a75c45b 100644
--- a/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml
+++ b/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml
@@ -49,6 +49,11 @@ properties:
       Must be half or less of "clocks" frequency.
     maximum: 20000000
 
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 2
+
 required:
   - compatible
   - reg

-- 
2.34.1