Messages in this thread Patch in this message | | | Date | Sat, 23 Jun 2018 20:54:21 +0200 | From | Andreas Klinger <> | Subject | [PATCH 1/3] iio: hx711: add data-ready-delay-ns property in DT |
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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 <ak@it-klinger.de> --- Documentation/devicetree/bindings/iio/adc/avia-hx711.txt | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt b/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt index b3629405f568..8c9bcaa4d750 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 { +weight { 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>; }; -- 2.1.4
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