Hi Geert,
Thanks for the feedback.
> Subject: Re: [PATCH v2 1/2] dt-bindings: iio: adc: Document Renesas RZ/G2UL
> ADC
>
> Hi Biju,
>
> On Fri, May 6, 2022 at 10:40 AM Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> wrote:
> > > Subject: Re: [PATCH v2 1/2] dt-bindings: iio: adc: Document Renesas
> > > RZ/G2UL On Thu, May 5, 2022 at 8:40 PM Biju Das
> <biju.das.jz@xxxxxxxxxxxxxx> wrote:
> > > > Document Renesas RZ/G2UL ADC bindings. RZ/G2UL ADC is almost
> > > > identical to RZ/G2L, but it has 2 analog input channels compared
> > > > to 8 channels on the RZ/G2L.
> > > >
> > > > Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
>
> > > > ---
> > > > a/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
> > > > +++ b/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.
> > > > +++ yaml
> > > > @@ -74,18 +75,48 @@ patternProperties:
> > > > Represents the external channels which are connected to the
> ADC.
> > > >
> > > > properties:
> > > > - reg:
> > > > - description: |
> > > > - The channel number. It can have up to 8 channels numbered
> from
> > > 0 to 7.
> > > > - items:
> > > > - - minimum: 0
> > > > - maximum: 7
> > > > -
> > > > + reg: true
> > > > required:
> > > > - reg
> > > >
> > > > additionalProperties: false
> > > >
> > > > +allOf:
> > > > + - if:
> > > > + properties:
> > > > + compatible:
> > > > + contains:
> > > > + const: renesas,r9a07g043-adc
> > > > + then:
> > > > + patternProperties:
> > > > + "^channel@[0-7]$":
> > >
> > > [0-1]
> >
> > Looks like with this change, validation doesn't work as expected.
>
> OK, keep it at [0-7].
OK.
>
> > > > + type: object
> > > > + properties:
> > > > + reg:
> > > > + description: |
> > > > + The channel number. It can have up to 2 channels
> > > numbered from 0 to 1.
> > > > + items:
> > > > + - minimum: 0
> > > > + maximum: 1
> > > > + - if:
> > > > + properties:
> > > > + compatible:
> > > > + contains:
> > > > + enum:
> > > > + - renesas,r9a07g044-adc
> > > > + - renesas,r9a07g054-adc
> > > > + then:
> > > > + patternProperties:
> > > > + "^channel@[0-7]$":
> > > > + type: object
> > > > + properties:
> > > > + reg:
> > > > + description: |
> > > > + The channel number. It can have up to 8 channels
> > > numbered from 0 to 7.
> > > > + items:
> > > > + - minimum: 0
> > > > + maximum: 7
> > > > +
> > > > additionalProperties: false
> > > >
> > > > examples:
> > >
> > > The rest LGTM, but I'm wondering if more of the channel subnodes
> > > description can be factored out to the common part?
> >
> > You mean above reg: true?? ie, add as part of the below description??
> >
> > type: object
> > description: |
> > Represents the external channels which are connected to the ADC.
>
> I think I've found a solution while converting the R-Car Gen2 USB PHY
> bindings. You can mark channels 3-7 false on RZ/G2UL, cfr. the second
> channel on RZ/G1C in "[PATCH] dt-bindings:
I just added similar check for RZ/G2UL by making channel@2-7 false and But dt-binding checks is passing
with channel@2-7 present in the example. Validation should fail, but it is passing. I will go with current implementation, as it does proper validation.
+if:
+ properties:
+ compatible:
+ contains:
+ const: renesas,r9a07g043-adc
+ then:
+ properties:
+ channel@2: false
+ channel@3: false
+ channel@4: false
+ channel@5: false
+ channel@6: false
+ channel@7: false
additionalProperties: false
@@ -125,7 +105,7 @@ examples:
#include <dt-bindings/interrupt-controller/arm-gic.h>
adc: adc@10059000 {
- compatible = "renesas,r9a07g044-adc", "renesas,rzg2l-adc";
+ compatible = "renesas,r9a07g043-adc", "renesas,rzg2l-adc";
$ make ARCH=arm64 DT_CHECKER_FLAGS=-m DT_SCHEMA_FILES=Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml CROSS_COMPILE=~/gcc-arm-10.3-2021.07-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu- dt_binding_check -j8
LINT Documentation/devicetree/bindings
DTEX Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.example.dts
CHKDT Documentation/devicetree/bindings/processed-schema.json
SCHEMA Documentation/devicetree/bindings/processed-schema.json
DTC Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.example.dtb
CHECK Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.example.dtb
Cheers,
Biju
