[PATCH v4 2/4] Documentation: dt: iio: at91-sama5d2_adc: add hw trigger edge binding

[Jonathan Cameron]

On Fri, 9 Jun 2017 10:07:17 +0300
Eugen Hristev <eugen.hristev at microchip.com> wrote:

> Add property for the edge type of the hardware trigger pin ADTRG
> 
> Signed-off-by: Eugen Hristev <eugen.hristev at microchip.com>
Hi Eugen,

CC the device tree maintainers and list for devicetree binding changes.

I've added them.   This one is unusual enough it will need and Ack from
that direction (and I prefer to get them even for the trivial patches
when Rob and Mark aren't too busy!)

Jonathan
> ---
>   Changes in v4:
>  - Modified bindings to be similar with interrupts
> 
>  Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
> index 3223684..552e7a8 100644
> --- a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
> +++ b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
> @@ -11,6 +11,11 @@ Required properties:
>    - atmel,min-sample-rate-hz: Minimum sampling rate, it depends on SoC.
>    - atmel,max-sample-rate-hz: Maximum sampling rate, it depends on SoC.
>    - atmel,startup-time-ms: Startup time expressed in ms, it depends on SoC.
> +  - atmel,trigger-edge-type: One of possible edge types for the ADTRG hardware
> +  trigger pin. When the specific edge type is detected, the conversion will
> +  start. Possible values are rising, falling, or both.
> +  This property uses the IRQ edge types values: IRQ_TYPE_EDGE_RISING ,
> +  IRQ_TYPE_EDGE_FALLING or IRQ_TYPE_EDGE_BOTH
>  
>  Example:
>  
> @@ -25,4 +30,5 @@ adc: adc at fc030000 {
>  	atmel,startup-time-ms = <4>;
>  	vddana-supply = <&vdd_3v3_lp_reg>;
>  	vref-supply = <&vdd_3v3_lp_reg>;
> +	atmel,trigger-edge-type = <IRQ_TYPE_EDGE_BOTH>;
>  }