RE: [PATCH v7 1/3] dt-bindings: mfd: Convert atmel-flexcom to json-schema

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> > Convert the Atmel flexcom device tree bindings to json schema.
> >
> > Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@xxxxxxxxxxxxx>
> > ---
> > v6 -> v7:
> >  - Change filename to atmel,sama5d2-flexcom.yaml
> >  - Add #address-cells, #size-cells to flexcom node - Fixed warnings.
> >
> > v5 -> v6:
> >  - Removed spi node from example as suggested by Rob and
> >    also pattern properties(spi dt-bindings conversion to yaml patch is under
> review).
> >    Once that is accepted, I will add back spi example through new patch.
> >
> > v4 -> v5:
> >  - Fixed indentations.
> >
> > v3 -> v4:
> >  - Corrected format of enum used for compatible string.
> >
> > v2 -> v3:
> >  - used enum for compatible string.
> >  - changed irq flag to IRQ_TYPE_LEVEL_HIGH in example.
> >  - fixed dtschema errors.
> >
> > v1 -> v2:
> >  - Fix title.
> >
> >  .../bindings/mfd/atmel,sama5d2-flexcom.yaml   | 74
> +++++++++++++++++++
> >  .../devicetree/bindings/mfd/atmel-flexcom.txt | 63 ----------------
> >  2 files changed, 74 insertions(+), 63 deletions(-)
> >  create mode 100644
> Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml
> >  delete mode 100644 Documentation/devicetree/bindings/mfd/atmel-
> flexcom.txt
> >
> > diff --git a/Documentation/devicetree/bindings/mfd/atmel,sama5d2-
> flexcom.yaml b/Documentation/devicetree/bindings/mfd/atmel,sama5d2-
> flexcom.yaml
> > new file mode 100644
> > index 000000000000..864f490ffb83
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/mfd/atmel,sama5d2-
> flexcom.yaml
> > @@ -0,0 +1,74 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/mfd/atmel,sama5d2-flexcom.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Atmel Flexcom (Flexible Serial Communication Unit)
> > +
> > +maintainers:
> > +  - Kavyasree Kotagiri <kavyasree.kotagiri@xxxxxxxxxxxxx>
> > +
> > +description:
> > +  The Atmel Flexcom is just a wrapper which embeds a SPI controller,
> > +  an I2C controller and an USART. Only one function can be used at a
> > +  time and is chosen at boot time according to the device tree.
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - atmel,sama5d2-flexcom
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    maxItems: 1
> > +
> > +  "#address-cells":
> > +    const: 1
> > +
> > +  "#size-cells":
> > +    const: 1
> > +
> > +  ranges:
> > +    description:
> > +      One range for the full I/O register region. (including USART,
> > +      TWI and SPI registers).
> > +    items:
> > +      maxItems: 3
> > +
> > +  atmel,flexcom-mode:
> > +    description: |
> > +      Specifies the flexcom mode as follows:
> > +      1: USART
> > +      2: SPI
> > +      3: I2C.
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    enum: [1, 2, 3]
> > +
> 
> As pointed out by Rob's bot - why do you not allow the protocol-specific
> children here? spi, serial etc?
> 
usart/serial, spi and i2c dt-bindings are in .txt format. So, I cannot refer them here. Like I mentioned in v5 -> v6 changes description, spi dt-bindings conversion is under discussion. For now, I am removing child nodes from example. I will add it through new patch once below bindings are accepted:
https://patchwork.kernel.org/project/linux-arm-kernel/patch/20220629125804.137099-1-sergiu.moga@xxxxxxxxxxxxx/

> 
> Best regards,
> Krzysztof




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