On Mon, 2 Nov 2020 20:21:08 -0600 Rob Herring <robh@xxxxxxxxxx> wrote: > On Sat, Oct 31, 2020 at 01:40:57PM +0000, Jonathan Cameron wrote: > > From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > > > > Fairly simple conversion with the exception of the XOR between > > spi-cpha and spi-cpol. > > > > Is there a better way to specify that? > > > > Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > > Cc: Lukas Wunner <lukas@xxxxxxxxx> > > --- > > v2: > > * Family typo > > * Put back the reference regulator in example. > > * Added checking of XOR of spi-cpha and spi-cpol > > (dropped Rob Herrings Reviewed-by due to this change) > > > > .../bindings/iio/dac/ti,dac082s085.yaml | 79 +++++++++++++++++++ > > .../bindings/iio/dac/ti-dac082s085.txt | 34 -------- > > 2 files changed, 79 insertions(+), 34 deletions(-) > > > > diff --git a/Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml b/Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml > > new file mode 100644 > > index 000000000000..192b314c99d1 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml > > @@ -0,0 +1,79 @@ > > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/iio/dac/ti,dac082s085.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: Texas Instruments DAC082s085 and similar DACs > > + > > +description: > > + A family of Texas Instruments 8/10/12-bit 2/4-channel DACs > > + > > +maintainers: > > + - Lukas Wunner <lukas@xxxxxxxxx> > > + > > +properties: > > + compatible: > > + enum: > > + - ti,dac082s085 > > + - ti,dac102s085 > > + - ti,dac122s085 > > + - ti,dac084s085 > > + - ti,dac104s085 > > + - ti,dac124s085 > > + > > + reg: > > + maxItems: 1 > > + > > + spi-cpha: true > > + spi-cpol: > > + description: > > + Should be either spi-cpha, or spi-cpol but not both. > > + > > + vref-supply: > > + description: Needed to provide output scaling. > > + > > + spi-max-frequency: true > > + > > +required: > > + - compatible > > + - reg > > + - vref-supply > > + > > +additionalProperties: false > > + > > +allOf: > > + - $ref: '#/definitions/cpolXORcpha' > > + > > +definitions: > > + cpolXORcpha: > > No need for a definition. Just put the below in the allOf entry. I can't figure out the syntax to do that. If I put it directly there I get, ... iio/dac/ti,dac082s085.yaml: allOf:0: 'not' is not one of ['$ref', 'if', 'then', 'else'] The use of $ref was the only way I could find to get around this. What other option is there? My Yaml is still largely cut and paste based so not sure I fully understand the restrictions that are applied. Thanks, Jonathan > > > + not: > > + required: [spi-cpha, spi-cpol] > > + oneOf: > > + - required: > > + - spi-cpha > > + - required: > > + - spi-cpol > > + > > +examples: > > + - | > > + vref_2v5_reg: regulator-vref { > > + compatible = "regulator-fixed"; > > + regulator-name = "2v5"; > > + regulator-min-microvolt = <2500000>; > > + regulator-max-microvolt = <2500000>; > > + regulator-always-on; > > + }; > > + spi { > > + #address-cells = <1>; > > + #size-cells = <0>; > > + > > + dac@0 { > > + compatible = "ti,dac082s085"; > > + reg = <0>; > > + spi-max-frequency = <40000000>; > > + spi-cpol; > > + vref-supply = <&vref_2v5_reg>; > > + }; > > + }; > > +... > > diff --git a/Documentation/devicetree/bindings/iio/dac/ti-dac082s085.txt b/Documentation/devicetree/bindings/iio/dac/ti-dac082s085.txt > > deleted file mode 100644 > > index 9cb0e10df704..000000000000 > > --- a/Documentation/devicetree/bindings/iio/dac/ti-dac082s085.txt > > +++ /dev/null > > @@ -1,34 +0,0 @@ > > -Texas Instruments 8/10/12-bit 2/4-channel DAC driver > > - > > -Required properties: > > - - compatible: Must be one of: > > - "ti,dac082s085" > > - "ti,dac102s085" > > - "ti,dac122s085" > > - "ti,dac084s085" > > - "ti,dac104s085" > > - "ti,dac124s085" > > - - reg: Chip select number. > > - - spi-cpha, spi-cpol: SPI mode (0,1) or (1,0) must be used, so specify > > - either spi-cpha or spi-cpol (but not both). > > - - vref-supply: Phandle to the external reference voltage supply. > > - > > -For other required and optional properties of SPI slave nodes please refer to > > -../../spi/spi-bus.txt. > > - > > -Example: > > - vref_2v5_reg: regulator-vref { > > - compatible = "regulator-fixed"; > > - regulator-name = "2v5"; > > - regulator-min-microvolt = <2500000>; > > - regulator-max-microvolt = <2500000>; > > - regulator-always-on; > > - }; > > - > > - dac@0 { > > - compatible = "ti,dac082s085"; > > - reg = <0>; > > - spi-max-frequency = <40000000>; > > - spi-cpol; > > - vref-supply = <&vref_2v5_reg>; > > - }; > > -- > > 2.28.0 > >
