Add the boolean property 'microchip,xstbyen' to enable the dedicated
transceiver standby control function on the INT0/GPIO0/XSTBY pin of
the MCP251xFD family.

Signed-off-by: Viken Dadhaniya <viken.dadhaniya@oss.qualcomm.com>
---
v1 -> v2:

- Drop the gpio-hog approach as suggested by Dmitry.
- Add the microchip,xstbyen property to enable transceiver standby control.

v1 Link: https://lore.kernel.org/all/20260108125200.2803112-2-viken.dadhaniya@oss.qualcomm.com/
---
---
 .../devicetree/bindings/net/can/microchip,mcp251xfd.yaml  | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml b/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml
index 2d13638ebc6a..28e494262cd9 100644
--- a/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml
+++ b/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml
@@ -44,6 +44,14 @@ properties:
       signals a pending RX interrupt.
     maxItems: 1
 
+  microchip,xstbyen:
+    type: boolean
+    description:
+      If present, configure the INT0/GPIO0/XSTBY pin as transceiver standby
+      control. The pin is driven low when the controller is active and high
+      when it enters Sleep mode, allowing automatic standby control of an
+      external CAN transceiver connected to this pin.
+
   spi-max-frequency:
     description:
       Must be half or less of "clocks" frequency.
-- 
2.34.1