[PATCH] dt-bindings: iio: adc: atmel,sama5d2-adc: make atmel,trigger-edge-type non-mandatory

[Rob Herring]

On Fri, 17 Dec 2021 11:54:01 +0200, Eugen Hristev wrote:
> The atmel,trigger-edge-type was never imposed by the driver.
> Make things right and remove this property from the mandatory list.
> This will not break existing nodes because according to the binding they
> should have this property.
> However, the driver does not impose it and it works without it, the property
> selects the trigger type, and without it, the driver will have no trigger
> available, which is the case on some boards which do not have access
> to the trigger pin.
> This will avoid generating this warning for example:
> 
> */arch/arm/boot/dts/at91-sama7g5ek.dt.yaml: adc at e1000000: 'atmel,trigger-edge-type' is a required property
> 

Acked-by: Rob Herring <robh at kernel.org>