On Thu, 15 Aug 2024 12:11:56 +0000 Guillaume Stols <gstols@xxxxxxxxxxxx> wrote: > Add the required properties for iio-backend support, as well as an > example and the conditions to mutually exclude interruption and > conversion trigger with iio-backend. > The iio-backend's function is to controls the communication, and thus the > interruption pin won't be available anymore. > As a consequence, the conversion pin must be controlled externally since > we will miss information about when every single conversion cycle (i.e > conversion + data transfert) ends, hence a PWM is introduced to trigger transfer > the conversions. > > Signed-off-by: Guillaume Stols <gstols@xxxxxxxxxxxx> > --- > .../devicetree/bindings/iio/adc/adi,ad7606.yaml | 75 +++++++++++++++++++++- > 1 file changed, 72 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml > index c0008d36320f..4b324f7e3207 100644 > --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml > +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml > @@ -114,13 +114,28 @@ properties: > assumed that the pins are hardwired to VDD. > type: boolean > > + pwms: > + description: > + In case the conversion is triggered by a PWM instead of a GPIO plugged to > + the CONVST pin, the PWM must be referenced. > + minItems: 1 > + maxItems: 2 > + > + pwm-names: > + minItems: 1 > + maxItems: 2 > + > + io-backends: > + description: > + A reference to the iio-backend, which is responsible handling the BUSY > + pin's falling edge and communication. > + An example of backend can be found at > + http://analogdevicesinc.github.io/hdl/library/axi_ad7606x/index.html > + > required: > - compatible > - - reg I think we still want a reg, but only to differentiate multiple instances perhaps. > - avcc-supply > - vdrive-supply
