dt-bindings: tcan4x5x: Make wake-gpio an optional gpio

The wake-up of the device can be configured as an optional feature of
the device. Move the wake-up gpio from a requried property to an
optional property.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Cc: Rob Herring <robh@kernel.org>
Reviewed-by: Sean Nyekjaer <sean@geanix.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
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 e8aa21d..6bdcc3f 100644 (file)
--- a/Documentation/devicetree/bindings/net/can/tcan4x5x.txt
+++ b/Documentation/devicetree/bindings/net/can/tcan4x5x.txt
@@ -10,7 +10,6 @@ Required properties:
        - #size-cells: 0
        - spi-max-frequency: Maximum frequency of the SPI bus the chip can
                             operate at should be less than or equal to 18 MHz.
-       - device-wake-gpios: Wake up GPIO to wake up the TCAN device.
        - interrupt-parent: the phandle to the interrupt controller which provides
                     the interrupt.
        - interrupts: interrupt specification for data-ready.
@@ -23,6 +22,7 @@ Optional properties:
                       reset.
        - device-state-gpios: Input GPIO that indicates if the device is in
                              a sleep state or if the device is active.
+       - device-wake-gpios: Wake up GPIO to wake up the TCAN device.
 
 Example:
 tcan4x5x: tcan4x5x@0 {