On Tue, Oct 17, 2017 at 03:15:43PM +0200, Fabrice Gasnier wrote: > STM32H7 ADC channels may be configured either as single-ended or > differential. > Add 'st,adc-diff-channels' property to support differential channels. > Differential channels are defined as a pair of positive and negative > inputs: vinp & vinn. > > Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx> > --- > Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt > index 48bfcaa3..c3c8de1 100644 > --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt > +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt > @@ -62,6 +62,12 @@ Required properties: > - st,adc-channels: List of single-ended channels muxed for this ADC. > It can have up to 16 channels on stm32f4 or 20 channels on stm32h7, numbered > from 0 to 15 or 19 (resp. for in0..in15 or in0..in19). > +- st,adc-diff-channels: List of differential channels muxed for this ADC. > + Depending on part used, some channels can be configured as differential > + instead of single-ended (e.g. stm32h7). List here positive and negative > + inputs pairs as <vinp vinn>, <vinp vinn>,... vinp and vinn are numbered > + from 0 to 19 on stm32h7) > + Note: At least one of "st,adc-channels" or "st,adc-diff-channels" is required. Wouldn't both present be invalid? > - #io-channel-cells = <1>: See the IIO bindings section "IIO consumers" in > Documentation/devicetree/bindings/iio/iio-bindings.txt > > -- > 1.9.1 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
