RE: [PATCH v2] dt-bindings: rtc: isl1208: Convert to json-schema

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Hi Geert,

Thanks for the feedback.

> Subject: Re: [PATCH v2] dt-bindings: rtc: isl1208: Convert to json-schema
> 
> Hi Biju,
> 
> On Fri, May 5, 2023 at 10:06 AM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote:
> > Convert the isl1208 RTC device tree binding documentation to json-schema.
> >
> > Update the example to match reality.
> >
> > Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > ---
> > RFC->v2:
> >  * Updated maintainers list
> >  * Updated description from original bindings
> >  * removed default from isil,ev-evienb properties to match with the
> original
> >    bindings.
> >  * Added conditional check for interrupts.
> 
> Thanks for the update!
> 
> > --- a/Documentation/devicetree/bindings/rtc/isil,isl1208.txt
> > +++ /dev/null
> > @@ -1,38 +0,0 @@
> > -Intersil ISL1209/19 I2C RTC/Alarm chip with event in
> > -
> > -ISL12X9 have additional pins EVIN and #EVDET for tamper detection,
> > while the
> > -ISL1208 and ISL1218 do not.  They are all use the same driver with
> > the bindings -described here, with chip specific properties as noted.
> > -
> > -Required properties supported by the device:
> > - - "compatible": Should be one of the following:
> > -               - "isil,isl1208"
> > -               - "isil,isl1209"
> > -               - "isil,isl1218"
> > -               - "isil,isl1219"
> > - - "reg": I2C bus address of the device
> > -
> > -Optional properties:
> > - - "interrupt-names": list which may contains "irq" and "evdet"
> > -       evdet applies to isl1209 and isl1219 only
> > - - "interrupts": list of interrupts for "irq" and "evdet"
> > -       evdet applies to isl1209 and isl1219 only
> > - - "isil,ev-evienb": Enable or disable internal pull on EVIN pin
> > -       Applies to isl1209 and isl1219 only
> > -       Possible values are 0 and 1
> > -       Value 0 enables internal pull-up on evin pin, 1 disables it.
> > -       Default will leave the non-volatile configuration of the pullup
> > -       as is.
> > -
> > -Example isl1219 node with #IRQ pin connected to SoC gpio1 pin12 and
> > #EVDET pin -connected to SoC gpio2 pin 24 and internal pull-up enabled in
> EVIN pin.
> > -
> > -       isl1219: rtc@68 {
> > -               compatible = "isil,isl1219";
> > -               reg = <0x68>;
> > -               interrupt-names = "irq", "evdet";
> > -               interrupts-extended = <&gpio1 12 IRQ_TYPE_EDGE_FALLING>,
> > -                       <&gpio2 24 IRQ_TYPE_EDGE_FALLING>;
> > -               isil,ev-evienb = <1>;
> > -       };
> > -
> > diff --git a/Documentation/devicetree/bindings/rtc/isil,isl1208.yaml
> > b/Documentation/devicetree/bindings/rtc/isil,isl1208.yaml
> > new file mode 100644
> > index 000000000000..ca72f64a655c
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/rtc/isil,isl1208.yaml
> > @@ -0,0 +1,86 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id:
> > +
> > +title: Intersil ISL1209/19 I2C RTC/Alarm chip with event in
> > +
> > +maintainers:
> > +  - Trent Piepho <tpiepho@xxxxxxxxx>
> > +
> > +description: |
> > +  ISL12X9 have additional pins EVIN and #EVDET for tamper detection,
> > +while the
> > +  ISL1208 and ISL1218 do not.
> > +
> > +properties:
> > +  compatible:
> > +    oneOf:
> > +      - enum:
> > +          - isil,isl1208
> > +          - isil,isl1209
> > +          - isil,isl1218
> > +          - isil,isl1219
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    minItems: 1
> > +    maxItems: 2
> > +
> > +  interrupt-names: true
> 
> Please keep the list of names here.

OK.

> 
> > +
> > +  isil,ev-evienb:
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    enum: [ 0, 1 ]
> > +    description: |
> > +      Enable or disable internal pull on EVIN pin
> > +      Default will leave the non-volatile configuration of the pullup
> > +      as is.
> > +        <0> : Enables internal pull-up on evin pin
> > +        <1> : Disables internal pull-up on evin pin
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +
> > +allOf:
> > +  - $ref: rtc.yaml#
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - isil,isl1209
> > +              - isil,isl1219
> > +    then:
> > +      properties:
> > +        interrupts:
> > +          maxItems: 2
> > +        interrupt-names:
> > +          items:
> > +            - const: irq
> > +            - const: evdet
> > +      required:
> > +        - interrupts
> > +        - interrupt-names
> 
> Interrupts are not required (may not be wired), and are considered optional
> by the driver, too.

OK, will remove.

> 
> > +        - isil,ev-evienb
> 
> Also not required, as per the default (leave as-is).

Agreed.

Cheers,
Biju

> 
> > +    else:
> > +      properties:
> > +        interrupts:
> > +          maxItems: 1
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-
> m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like
> that.
>                                 -- Linus Torvalds




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