[PATCH v2 2/2] dt-bindings: can: tcan4x5x: Document the ti,nwkrq-voltage-sel option

[Sean Nyekjaer]

nWKRQ supports an output voltage of either the internal reference voltage
(3.6V) or the reference voltage of the digital interface 0 - 6V.
Add the devicetree option ti,nwkrq-voltage-sel to be able to select
between them.

Signed-off-by: Sean Nyekjaer <sean@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/net/can/ti,tcan4x5x.yaml | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/can/ti,tcan4x5x.yaml b/Documentation/devicetree/bindings/net/can/ti,tcan4x5x.yaml
index f1d18a5461e05296998ae9bf09bdfa1226580131..a77c560868d689e92ded08b9deb43e5a2b89bf2b 100644
--- a/Documentation/devicetree/bindings/net/can/ti,tcan4x5x.yaml
+++ b/Documentation/devicetree/bindings/net/can/ti,tcan4x5x.yaml
@@ -106,6 +106,18 @@ properties:
       Must be half or less of "clocks" frequency.
     maximum: 18000000
 
+  ti,nwkrq-voltage-sel:
+    $ref: /schemas/types.yaml#/definitions/uint8
+    description:
+      nWKRQ Pin GPO buffer voltage rail configuration.
+      The option of this properties will tell which
+      voltage rail is used for the nWKRQ Pin.
+    oneOf:
+      - description: Internal voltage rail
+        const: 0
+      - description: VIO voltage rail
+        const: 1
+
   wakeup-source:
     $ref: /schemas/types.yaml#/definitions/flag
     description:
@@ -157,6 +169,7 @@ examples:
             device-state-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
             device-wake-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
             reset-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>;
+            ti,nwkrq-voltage-sel = /bits/ 8 <0>;
             wakeup-source;
         };
     };

-- 
2.46.2