| Message ID | 20180710181831.GA5374@arbeit (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, Jul 10, 2018 at 08:18:31PM +0200, Andreas Klinger wrote: > Add clock-frequency property for hx711 ADC. This is the frequency of > PD_SCK. > > After PD_SCK goes high DOUT is read just before PD_SCK goes down again. > This is necessary because of parasitic capacitance on the wiring. > > Signed-off-by: Andreas Klinger <ak@it-klinger.de> > --- > Documentation/devicetree/bindings/iio/adc/avia-hx711.txt | 6 ++++++ > 1 file changed, 6 insertions(+) Reviewed-by: Rob Herring <robh@kernel.org> -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, 11 Jul 2018 07:54:00 -0600 Rob Herring <robh@kernel.org> wrote: > On Tue, Jul 10, 2018 at 08:18:31PM +0200, Andreas Klinger wrote: > > Add clock-frequency property for hx711 ADC. This is the frequency of > > PD_SCK. > > > > After PD_SCK goes high DOUT is read just before PD_SCK goes down again. > > This is necessary because of parasitic capacitance on the wiring. > > > > Signed-off-by: Andreas Klinger <ak@it-klinger.de> > > --- > > Documentation/devicetree/bindings/iio/adc/avia-hx711.txt | 6 ++++++ > > 1 file changed, 6 insertions(+) > > Reviewed-by: Rob Herring <robh@kernel.org> Applied to the togreg branch of iio.git and pushed out as testing. Thanks, Jonathan > -- > To unsubscribe from this list: send the line "unsubscribe linux-iio" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt b/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt index b3629405f568..2c1b67d33c49 100644 --- a/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt +++ b/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt @@ -8,11 +8,17 @@ Required properties: See Documentation/devicetree/bindings/gpio/gpio.txt - avdd-supply: Definition of the regulator used as analog supply +Optional properties: + - clock-frequency: Frequency of PD_SCK in Hz + Minimum value allowed is 10 kHz because of maximum + high time of 50 microseconds. + Example: weight@0 { compatible = "avia,hx711"; sck-gpios = <&gpio3 10 GPIO_ACTIVE_HIGH>; dout-gpios = <&gpio0 7 GPIO_ACTIVE_HIGH>; avdd-suppy = <&avdd>; + clock-frequency = <100000>; };
Add clock-frequency property for hx711 ADC. This is the frequency of PD_SCK. After PD_SCK goes high DOUT is read just before PD_SCK goes down again. This is necessary because of parasitic capacitance on the wiring. Signed-off-by: Andreas Klinger <ak@it-klinger.de> --- Documentation/devicetree/bindings/iio/adc/avia-hx711.txt | 6 ++++++ 1 file changed, 6 insertions(+)