linux-kernel - Re: [PATCH 1/3] dt-bindings: iio: imu: mpu6050: Add level shifter

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Date:   Mon, 25 Sep 2023 11:28:52 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
CC:     Andreas Kemnade <andreas@...nade.info>, <jic23@...nel.org>,
        <lars@...afoo.de>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <bcousson@...libre.com>, <tony@...mide.com>,
        <jean-baptiste.maneyrol@....com>, <chenhuiz@...s.com>,
        <andy.shevchenko@...il.com>, <linux-iio@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-omap@...r.kernel.org>
Subject: Re: [PATCH 1/3] dt-bindings: iio: imu: mpu6050: Add level shifter

On Mon, 25 Sep 2023 08:54:08 +0200
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:

> On 25/09/2023 00:25, Andreas Kemnade wrote:
> > Found in ancient platform data struct:
> > level_shifter: 0: VLogic, 1: VDD
> > 
> > Signed-off-by: Andreas Kemnade <andreas@...nade.info>
> > ---
> >  .../devicetree/bindings/iio/imu/invensense,mpu6050.yaml         | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml b/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml
> > index 1db6952ddca5e..6aae2272fa15c 100644
> > --- a/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml
> > +++ b/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml
> > @@ -48,6 +48,8 @@ properties:
> >  
> >    mount-matrix: true
> >  
> > +  invensense,level-shifter: true  
> 
> It does not look like you tested the bindings, at least after quick
> look. Please run `make dt_binding_check` (see
> Documentation/devicetree/bindings/writing-schema.rst for instructions).
> Maybe you need to update your dtschema and yamllint.
> 
> Best regards,
> Krzysztof
> 
> 

Also this one isn't obvious - give it a description in the binding doc.

I'm not sure of the arguement for calling it level shift in general.

Jonathan