Hi All,
> Subject: RE: [PATCH RFC 3/6] dt-bindings: rtc: isl1208: Convert to json-
> schema
>
>
>
>
> > -----Original Message-----
> > From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > Sent: Wednesday, May 3, 2023 9:46 AM
> > To: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>; Alexandre Belloni
> > <alexandre.belloni@xxxxxxxxxxx>; Rob Herring <robh+dt@xxxxxxxxxx>;
> > Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>
> > Cc: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>; Trent Piepho
> > <tpiepho@xxxxxxxxxx>; linux-rtc@xxxxxxxxxxxxxxx;
> > devicetree@xxxxxxxxxxxxxxx; Geert Uytterhoeven
> > <geert+renesas@xxxxxxxxx>; Fabrizio Castro
> > <fabrizio.castro.jz@xxxxxxxxxxx>; linux-renesas-soc@xxxxxxxxxxxxxxx
> > Subject: [PATCH RFC 3/6] dt-bindings: rtc: isl1208: Convert to
> > json-schema
> >
> > 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>
> > ---
> > .../devicetree/bindings/rtc/isil,isl1208.txt | 38 ----------
> > .../devicetree/bindings/rtc/isil,isl1208.yaml | 74 +++++++++++++++++++
> > 2 files changed, 74 insertions(+), 38 deletions(-) delete mode
> > 100644 Documentation/devicetree/bindings/rtc/isil,isl1208.txt
> > create mode 100644
> > Documentation/devicetree/bindings/rtc/isil,isl1208.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/rtc/isil,isl1208.txt
> > b/Documentation/devicetree/bindings/rtc/isil,isl1208.txt
> > deleted file mode 100644
> > index 51f003006f04..000000000000
> > --- 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..04d51887855f
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/rtc/isil,isl1208.yaml
> > @@ -0,0 +1,74 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id:
> > +https://jpn01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevi
> > +ce
> > +tree.org%2Fschemas%2Frtc%2Fisil%2Cisl1208.yaml%23&data=05%7C01%7Cbiju
> > +.d
> > +as.jz%40bp.renesas.com%7C369929b1ce554af8b10008db4bb2e184%7C53d82571d
> > +a1
> > +947e49cb4625a166a4a2a%7C0%7C0%7C638187003880337413%7CUnknown%7CTWFpbG
> > +Zs
> > +b3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3
> > +D%
> > +7C3000%7C%7C%7C&sdata=hhWJWxRzJEgudMmnw%2Fl9DgpL0%2BaPRWfWDK2mGqztl3c
> > +%3
> > +D&reserved=0
> > +$schema:
> > +https://jpn01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevi
> > +ce
> > +tree.org%2Fmeta-schemas%2Fcore.yaml%23&data=05%7C01%7Cbiju.das.jz%40bp.
> > +renesas.com%7C369929b1ce554af8b10008db4bb2e184%7C53d82571da1947e49cb4
> > +62
> > +5a166a4a2a%7C0%7C0%7C638187003880337413%7CUnknown%7CTWFpbGZsb3d8eyJWI
> > +jo
> > +iMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C
> > +%7
> > +C%7C&sdata=figbanniGklELxfV4t10SVsg4i0X%2Bozm68rxXy4pupg%3D&reserved=
> > +0
> > +
> > +title: Intersil ISL12{08,09,18,19} I2C RTC/Alarm chip
> > +
> > +maintainers:
> > + - Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > + - Trent Piepho <tpiepho@xxxxxxxxxx>
> > +
> > +properties:
> > + compatible:
> > + oneOf:
> > + - enum:
> > + - isil,isl1208
> > + - isil,isl1209
> > + - isil,isl1218
> > + - isil,isl1219
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + interrupts:
> > + minItems: 1
> > + maxItems: 2
> > +
> > + interrupt-names:
> > + items:
> > + - const: irq
> > + - const: evdet
> > +
> > + isil,ev-evienb:
> > + $ref: /schemas/types.yaml#/definitions/uint32
> > + enum: [ 0, 1 ]
> > + default: 0
>
> Not sure, default should be removed as per [1]?
>
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-
> next.git/tree/Documentation/devicetree/bindings/rtc/isil,isl1208.txt?h=next-
> 20230428#n20
Or
as per HW data sheet[1], the reset value is 0, so we should keep the default value.
[2] https://www.renesas.com/us/en/document/dst/isl1219-datasheet
Cheers,
Biju
>
> > + description: |
> > + Enable or disable internal pull on EVIN pin:
> > + <0> : Enable internal pull-up
> > + <1> : Disable internal pull-up
> > +
> > +required:
> > + - compatible
> > + - reg
> > +
> > +allOf:
> > + - $ref: rtc.yaml#
> > + - if:
> > + properties:
> > + compatible:
> > + contains:
> > + enum:
> > + - isil,isl1209
> > + - isil,isl1219
> > + then:
> > + required:
> > + - interrupts-extended
> > + - interrupt-names
> > + - isil,ev-evienb
> > +
> > +unevaluatedProperties: false
> > +
> > +examples:
> > + - |
> > + i2c {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + rtc_twi: rtc@6f {
> > + compatible = "isil,isl1208";
> > + reg = <0x6f>;
> > + };
> > + };
> > --
> > 2.25.1
