dt-bindings: can: tcan4x5x: Document the wakeup-source flag

Let it be known that the tcan4x5x device can now be configured to wake
the host from suspend when a can frame is received.

Signed-off-by: Martin Hundebøll <martin@geanix.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
[mkl: make first the first patch]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/Documentation/devicetree/bindings/net/can/tcan4x5x.txt b/Documentation/devicetree/bindings/net/can/tcan4x5x.txt
index 170e23f0610db91309a5ab0f57a15ac654b5b5df..20c0572c9853424e1d104cbf75d02094a54836c3 100644 (file)
--- a/Documentation/devicetree/bindings/net/can/tcan4x5x.txt
+++ b/Documentation/devicetree/bindings/net/can/tcan4x5x.txt
@@ -28,6 +28,8 @@ Optional properties:
                              available with tcan4552/4553.
        - device-wake-gpios: Wake up GPIO to wake up the TCAN device. Not
                             available with tcan4552/4553.
+       - wakeup-source: Leave the chip running when suspended, and configure
+                        the RX interrupt to wake up the device.
 
 Example:
 tcan4x5x: tcan4x5x@0 {
@@ -42,4 +44,5 @@ tcan4x5x: tcan4x5x@0 {
                device-state-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
                device-wake-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
                reset-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>;
+               wakeup-source;
 };