[PATCH] dt-bindings: iio: adc: stm32-dfsdm: fix types, add missing pinctrl

[Arnaud Pouliquen]

Hello,

Acked-by: Arnaud Pouliquen <arnaud.pouliquen at st.com>

Regards,
Arnaud

On 02/23/2018 12:11 PM, Fabrice Gasnier wrote:
> - Add missing pinctrl description. Support is made optional as dfsdm
>   may use internal sources (e.g. via registers)
> - Fix typo in IIO STM32 DFSDM filter "MANCH_F" description.
> Basically, this should be "falling edge = logic 0", not "1" that applies
> to "MANCH_R".
> BTW, make the description complete by describing both rising/falling
> edges as described in reference manuals.
> 
> Fixes: 6c82f947fc97 ("IIO: add DT bindings for stm32 DFSDM filter")
> 
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier at st.com>
> ---
>  Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.txt | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.txt
> index 911492da..ed7520d 100644
> --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.txt
> +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.txt
> @@ -32,6 +32,10 @@ Optional properties:
>  		  to "clock" property. Frequency must be a multiple of the rcc
>  		  clock frequency. If not, SPI CLKOUT frequency will not be
>  		  accurate.
> +- pinctrl-names:	Set to "default".
> +- pinctrl-0:		List of phandles pointing to pin configuration
> +			nodes to set pins in mode of operation for dfsdm
> +			on external pin.
>  
>  Contents of a STM32 DFSDM child nodes:
>  --------------------------------------
> @@ -68,8 +72,8 @@ Optional properties:
>  - st,adc-channel-types:	Single-ended channel input type.
>  			- "SPI_R": SPI with data on rising edge (default)
>  			- "SPI_F": SPI with data on falling edge
> -			- "MANCH_R": manchester codec, rising edge = logic 0
> -			- "MANCH_F": manchester codec, falling edge = logic 1
> +			- "MANCH_R": manchester codec, rising edge = logic 0, falling edge = logic 1
> +			- "MANCH_F": manchester codec, rising edge = logic 1, falling edge = logic 0
>  - st,adc-channel-clk-src: Conversion clock source.
>  			  - "CLKIN": external SPI clock (CLKIN x)
>  			  - "CLKOUT": internal SPI clock (CLKOUT) (default)
>