On Mon, 25 Jun 2018 17:18:02 +0200 Andreas Klinger <[email protected]> wrote:
> add data-ready-delay-ns property for hx711 ADC > this is the delay after rising PD_SCK until DOUT is read and assumed to be > ready > > Signed-off-by: Andreas Klinger <[email protected]> Hmm. It's not particularly generic... I think this should have have vendor prefix until we have some visibility of whether it is a common thing we want to standardise around or not. I'll also be waiting for a devicetree ack on this one as it's a tiny bit unusual. Thanks, Jonathan > --- > Documentation/devicetree/bindings/iio/adc/avia-hx711.txt | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt > b/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt > index b3629405f568..d0c066e3df69 100644 > --- a/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt > +++ b/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt > @@ -8,11 +8,18 @@ Required properties: > See Documentation/devicetree/bindings/gpio/gpio.txt > - avdd-supply: Definition of the regulator used as analog supply > > +Optional properties: > + - data-ready-delay-ns: additional delay in nanoseconds between rising > of > + PD_SCK until DOUT is ready > + should be less then maximum PD_SCK high time which > + is 50000 in the datasheet > + > Example: > weight@0 { > compatible = "avia,hx711"; > sck-gpios = <&gpio3 10 GPIO_ACTIVE_HIGH>; > dout-gpios = <&gpio0 7 GPIO_ACTIVE_HIGH>; > avdd-suppy = <&avdd>; > + data-ready-delay-ns = <1000>; > }; >
