RE: [PATCH v3 2/2] dt-bindings: iio: frequency: add admv1013 doc

["Miclaus, Antoniu" <Antoniu.Miclaus@analog.com>]

Example:
In the setup that we tested the driver, we had a clock chip that was hardware-routed only to the positive side of the local oscillator input (LOP pin) from admv1013.

Therefore, I think keeping the property in the DT might be useful.

Regards,
--
Antoniu Miclăuş

> -----Original Message-----
> From: Miclaus, Antoniu
> Sent: Wednesday, November 3, 2021 10:09 AM
> To: Rob Herring <robh@kernel.org>
> Cc: jic23@kernel.org; linux-iio@vger.kernel.org; devicetree@vger.kernel.org;
> linux-kernel@vger.kernel.org; Sa, Nuno <Nuno.Sa@analog.com>
> Subject: RE: [PATCH v3 2/2] dt-bindings: iio: frequency: add admv1013 doc
> 
> Hello Rob,
> 
> These properties are fixed and available in the datasheet (binary format):
> https://www.analog.com/media/en/technical-documentation/data-
> sheets/ADMV1013.pdf
> 
> Please see Page 37 of 39, Table 15, QUAD_SE_MODE.
> 
> Regards,
> --
> Antoniu Miclăuş
> 
> > -----Original Message-----
> > From: Rob Herring <robh@kernel.org>
> > Sent: Tuesday, November 2, 2021 7:51 PM
> > To: Miclaus, Antoniu <Antoniu.Miclaus@analog.com>
> > Cc: jic23@kernel.org; linux-iio@vger.kernel.org;
> devicetree@vger.kernel.org;
> > linux-kernel@vger.kernel.org; Sa, Nuno <Nuno.Sa@analog.com>
> > Subject: Re: [PATCH v3 2/2] dt-bindings: iio: frequency: add admv1013 doc
> >
> > [External]
> >
> > On Mon, Nov 01, 2021 at 12:04:20PM +0200, Antoniu Miclaus wrote:
> > > Add device tree bindings for the ADMV1013 Upconverter.
> > >
> > > Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
> > > ---
> > >  .../bindings/iio/frequency/adi,admv1013.yaml  | 119
> > ++++++++++++++++++
> > >  1 file changed, 119 insertions(+)
> > >  create mode 100644
> > Documentation/devicetree/bindings/iio/frequency/adi,admv1013.yaml
> > >
> > > diff --git
> > a/Documentation/devicetree/bindings/iio/frequency/adi,admv1013.yaml
> > b/Documentation/devicetree/bindings/iio/frequency/adi,admv1013.yaml
> > > new file mode 100644
> > > index 000000000000..47993253a586
> > > --- /dev/null
> > > +++
> > b/Documentation/devicetree/bindings/iio/frequency/adi,admv1013.yaml
> > > @@ -0,0 +1,119 @@
> > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > > +%YAML 1.2
> > > +---
> > > +$id:
> >
> https://urldefense.com/v3/__http://devicetree.org/schemas/iio/frequency
> >
> /adi,admv1013.yaml*__;Iw!!A3Ni8CS0y2Y!uTDPalOgj6YS_vZ6bsDSbA_Qna6Q
> > OwMpoRxzo6nn06i5TNuGWZEk9PvtbC6SKQGXrugy$
> > > +$schema: https://urldefense.com/v3/__http://devicetree.org/meta-
> >
> schemas/core.yaml*__;Iw!!A3Ni8CS0y2Y!uTDPalOgj6YS_vZ6bsDSbA_Qna6Q
> > OwMpoRxzo6nn06i5TNuGWZEk9PvtbC6SKYugV1fM$
> > > +
> > > +title: ADMV1013 Microwave Upconverter
> > > +
> > > +maintainers:
> > > +  - Antoniu Miclaus <antoniu.miclaus@analog.com>
> > > +
> > > +description: |
> > > +   Wideband, microwave upconverter optimized for point to point
> > microwave
> > > +   radio designs operating in the 24 GHz to 44 GHz frequency range.
> > > +
> > > +   https://www.analog.com/en/products/admv1013.html
> > > +
> > > +properties:
> > > +  compatible:
> > > +    enum:
> > > +      - adi,admv1013
> > > +
> > > +  reg:
> > > +    maxItems: 1
> > > +
> > > +  spi-max-frequency:
> > > +    maximum: 1000000
> > > +
> > > +  clocks:
> > > +    description:
> > > +      Definition of the external clock.
> > > +    minItems: 1
> > > +
> > > +  clock-names:
> > > +    items:
> > > +      - const: lo_in
> > > +
> > > +  clock-output-names:
> > > +    maxItems: 1
> > > +
> > > +  vcm-supply:
> > > +    description:
> > > +      Analog voltage regulator.
> > > +
> > > +  adi,vga-powerdown:
> > > +    description:
> > > +      Power Down the Voltage Gain Amplifier Circuit available at
> > > +      BG_RBIAS2 pin.
> > > +    type: boolean
> > > +
> > > +  adi,mixer-powerdown:
> > > +    description:
> > > +      Power Down the Mixer Circuit. Enable to put the block in
> > > +      a power down state.
> > > +    type: boolean
> > > +
> > > +  adi,quad-powerdown:
> > > +    description:
> > > +      Power Down the Quadrupler. Enable to put the block in
> > > +      a power down state.
> > > +    type: boolean
> > > +
> > > +  adi,bg-powerdown:
> > > +    description:
> > > +      Power Down the Transmitter Band Gap. Enable to put the part in
> > > +      a power down state.
> > > +    type: boolean
> > > +
> > > +  adi,mixer-if-enable:
> > > +    description:
> > > +      Enable the Intermediate Frequency Mode. Either IF Mode or I/Q
> Mode
> > > +      can be enabled at a time.
> > > +    type: boolean
> > > +
> > > +  adi,detector-enable:
> > > +    description:
> > > +      Enable the Envelope Detector available at output pins VENV_P and
> > > +      VENV_N. Disable to reduce power consumption.
> > > +    type: boolean
> > > +
> > > +  adi,quad-se-mode:
> > > +    description:
> > > +      Switch the LO path from differential to single-ended operation.
> > > +      Set value 6 for Single-Ended Mode, Negative Side Disabled.
> > > +      Set value 9 for Single-Ended Mode, Positive Side Disabled.
> > > +      Set value 12 for Differential Mode.
> > > +    $ref: /schemas/types.yaml#/definitions/uint32
> > > +    enum: [6, 9, 12]
> >
> > All these vendor properties are fixed based on the board design or
> > something a user may want to change? The latter does not belong in DT.
> >
> > Rob