Re: [PATCH v3 1/2] dt-bindings: can: mcp251xfd: add microchip,xstbyen property

On 23.03.2026 19:30:00, Conor Dooley wrote:

quoted

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.

What I don't understand from this patch is why a property for this is
required.
Why can't this mode be implied from the lack of rx-int-gpios or
interrupts?

The mcp251xfd has 2 GPIO pins. "rx-int-gpios" is for the other pin:
INT1/GPIO1. Also by default I don't want the controller to drive a pin
in a certain direction.

regards,
Marc

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