Re: [PATCH 8/9] dt-bindings: spi: Convert Freescale SPI bindings to YAML

["J. Neuschäfer" <j.ne@posteo.net>]

On Sun, Jan 26, 2025 at 11:09:01PM -0600, Rob Herring wrote:
> On Sun, Jan 26, 2025 at 07:59:03PM +0100, J. Neuschäfer wrote:
> > fsl-spi.txt contains the bindings for the fsl,spi and fsl,espi
> > contollers. Convert them to YAML.
> > 
> > Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
> > ---
> >  .../devicetree/bindings/spi/fsl,espi.yaml          | 56 +++++++++++++++++
> >  Documentation/devicetree/bindings/spi/fsl,spi.yaml | 71 ++++++++++++++++++++++
> >  Documentation/devicetree/bindings/spi/fsl-spi.txt  | 62 -------------------
> >  3 files changed, 127 insertions(+), 62 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/spi/fsl,espi.yaml b/Documentation/devicetree/bindings/spi/fsl,espi.yaml
> > new file mode 100644
> > index 0000000000000000000000000000000000000000..350275760210c5763af0c7b1e1522ccbfb97eec7
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/spi/fsl,espi.yaml
> > @@ -0,0 +1,56 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/spi/fsl,espi.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Freescale eSPI (Enhanced Serial Peripheral Interface) controller
> > +
> > +maintainers:
> > +  - J. Neuschäfer <j.ne@posteo.net>
> > +
> > +properties:
> > +  compatible:
> > +    const: fsl,mpc8536-espi
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts: true
> 
> How many?
> 
> > +
> > +  fsl,espi-num-chipselects:
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    description: The number of the chipselect signals.
> 
> Constraints?
> 
> > +
> > +  fsl,csbef:
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    description: Chip select assertion time in bits before frame starts
> 
> Constraints?
> 
> > +
> > +  fsl,csaft:
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    description: Chip select negation time in bits after frame ends
> 
> Constraints?

I'll add appropriate constraints to all of these.


> > diff --git a/Documentation/devicetree/bindings/spi/fsl,spi.yaml b/Documentation/devicetree/bindings/spi/fsl,spi.yaml
[...]
> > +  clock-frequency:
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> 
> Don't need a type.

Will remove

> 
> > +    description: input clock frequency to non FSL_SOC cores
> > +
> > +  cs-gpios: true
> > +
> > +  fsl,spisel_boot:
> > +    $ref: /schemas/types.yaml#/definitions/flag

I do wonder, what's the difference between
$ref: /schemas/types.yaml#/definitions/flag and type: boolean?



Thanks for your review.

Best regards,
J. Neuschäfer