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Message-ID: <20200527152958.GA21548@ict14-OptiPlex-980>
Date:   Wed, 27 May 2020 17:29:58 +0200
From:   Jonathan Albrieux <jonathan.albrieux@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Hartmut Knaack <knaack.h@....de>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        "open list:IIO SUBSYSTEM AND DRIVERS" <linux-iio@...r.kernel.org>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Jonathan Cameron <jic23@...nel.org>
Subject: Re: [PATCH v6 2/5] dt-bindings: iio: magnetometer: ak8975: convert
 format to yaml, add maintainer

On Tue, May 26, 2020 at 04:28:47PM -0600, Rob Herring wrote:
> On Mon, May 25, 2020 at 05:10:36PM +0200, Jonathan Albrieux wrote:
> > Converts documentation from txt format to yaml.
> 
> I would have converted to yaml and do any re-formatting/wording, then 
> added 'interrupts', but this is fine.
>

Thank you, I'll keep that in mind for future works like this one
 
> 
> > Signed-off-by: Jonathan Albrieux <jonathan.albrieux@...il.com>
> > ---
> >  .../bindings/iio/magnetometer/ak8975.txt      | 37 ---------
> >  .../iio/magnetometer/asahi-kasei,ak8975.yaml  | 78 +++++++++++++++++++
> >  2 files changed, 78 insertions(+), 37 deletions(-)
> >  delete mode 100644 Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt
> >  create mode 100644 Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt b/Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt
> > deleted file mode 100644
> > index 0576b9df0bf2..000000000000
> > --- a/Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt
> > +++ /dev/null
> > @@ -1,37 +0,0 @@
> > -* AsahiKASEI AK8975 magnetometer sensor
> > -
> > -Required properties:
> > -
> > -  - compatible : should be "asahi-kasei,ak8975".
> > -  - reg : the I2C address of the magnetometer.
> > -
> > -Optional properties:
> > -
> > -  - gpios : AK8975 has a "Data ready" pin (DRDY) which informs that data
> > -      is ready to be read and is possible to listen on it. If used,
> > -      this should be active high. Prefer interrupt over this.
> > -
> > -  - interrupts : interrupt for DRDY pin. Triggered on rising edge.
> > -
> > -  - vdd-supply: an optional regulator that needs to be on to provide VDD.
> > -
> > -  - mount-matrix: an optional 3x3 mounting rotation matrix.
> > -
> > -Example:
> > -
> > -ak8975@c {
> > -        compatible = "asahi-kasei,ak8975";
> > -        reg = <0x0c>;
> > -        interrupt-parent = <&gpio6>;
> > -        interrupts = <15 IRQ_TYPE_EDGE_RISING>;
> > -        vdd-supply = <&ldo_3v3_gnss>;
> > -        mount-matrix = "-0.984807753012208",  /* x0 */
> > -                       "0",                   /* y0 */
> > -                       "-0.173648177666930",  /* z0 */
> > -                       "0",                   /* x1 */
> > -                       "-1",                  /* y1 */
> > -                       "0",                   /* z1 */
> > -                       "-0.173648177666930",  /* x2 */
> > -                       "0",                   /* y2 */
> > -                       "0.984807753012208";   /* z2 */
> > -};
> > diff --git a/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml b/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml
> > new file mode 100644
> > index 000000000000..a603659d5fa5
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml
> > @@ -0,0 +1,78 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/iio/magnetometer/asahi-kasei,ak8975.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: AsahiKASEI AK8975 magnetometer sensor
> > +
> > +maintainers:
> > +  - Jonathan Albrieux <jonathan.albrieux@...il.com>
> > +
> > +properties:
> > +  compatible:
> > +    oneOf:
> > +      - const: asahi-kasei,ak8975
> > +      - const: asahi-kasei,ak8963
> > +      - const: asahi-kasei,ak09911
> > +      - const: asahi-kasei,ak09912
> 
> These 4 can be an enum.
> 
> > +      - const: ak8975
> > +        deprecated: true
> > +      - const: ak8963
> > +        deprecated: true
> > +      - const: ak09911
> > +        deprecated: true
> > +      - const: ak09912
> > +        deprecated: true
> 
> And these 4 can be an enum+deprecated.
> 
> > +
> > +  reg:
> > +    maxItems: 1
> > +    description: the I2C address of the magnetometer.
> 
> Don't need a description.
> 
> > +
> > +  gpios:
> > +    description: |
> > +      AK8975 has a "Data ready" pin (DRDY) which informs that data
> > +      is ready to be read and is possible to listen on it. If used,
> > +      this should be active high. Prefer interrupt over this.
> 
> Need to define how many GPIOs (maxItems: 1).
> 

Ok, I'll edit those fields as soon as possible, thank you,

Best regards,
Jonathan Albrieux

> > +
> > +  interrupts:
> > +    maxItems: 1
> > +    description: interrupt for DRDY pin. Triggered on rising edge.
> > +
> > +  vdd-supply:
> > +    maxItems: 1
> > +    description: |
> > +      an optional regulator that needs to be on to provide VDD power to
> > +      the sensor.
> > +
> > +  mount-matrix:
> > +    description: an optional 3x3 mounting rotation matrix.
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/interrupt-controller/irq.h>
> > +    i2c {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        magnetometer@c {
> > +            compatible = "asahi-kasei,ak8975";
> > +            reg = <0x0c>;
> > +            interrupt-parent = <&gpio6>;
> > +            interrupts = <15 IRQ_TYPE_EDGE_RISING>;
> > +            vdd-supply = <&ldo_3v3_gnss>;
> > +            mount-matrix = "-0.984807753012208",  /* x0 */
> > +                           "0",                   /* y0 */
> > +                           "-0.173648177666930",  /* z0 */
> > +                           "0",                   /* x1 */
> > +                           "-1",                  /* y1 */
> > +                           "0",                   /* z1 */
> > +                           "-0.173648177666930",  /* x2 */
> > +                           "0",                   /* y2 */
> > +                           "0.984807753012208";   /* z2 */
> > +        };
> > +    };
> > -- 
> > 2.17.1
> > 

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