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[v2,3/4] dt-bindings: iio: adc: qcom,pm8018-adc: allow specifying MPP channels

Message ID 20221204061555.1355453-4-dmitry.baryshkov@linaro.org (mailing list archive)
State New, archived
Headers show
Series dt-bindings: add missing subdevices to qcom-pm8xxx schema | expand

Commit Message

Dmitry Baryshkov Dec. 4, 2022, 6:15 a.m. UTC
Several ADC channels are bound to the Multi Purpose Pins (MPPs). Allow
specifying such channels using the mppN device node (as used on apq8060
dragonboard).

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Jonathan Cameron Dec. 4, 2022, 3:37 p.m. UTC | #1
On Sun,  4 Dec 2022 08:15:54 +0200
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> wrote:

> Several ADC channels are bound to the Multi Purpose Pins (MPPs). Allow
> specifying such channels using the mppN device node (as used on apq8060
> dragonboard).
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

So I understand this more, why do the node names have to have anything to
do with the particular pin? I'm assuming the reg value provides that
relationship.

> ---
>  Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml b/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml
> index d186b713d6a7..fee30e6ddd62 100644
> --- a/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml
> @@ -64,7 +64,7 @@ required:
>    - adc-channel@f
>  
>  patternProperties:
> -  "^(adc-channel@)[0-9a-f]$":
> +  "^(adc-channel|mpp[0-9]+)@[0-9a-f]$":
>      type: object
>      description: |
>        ADC channel specific configuration.
Dmitry Baryshkov Dec. 4, 2022, 3:43 p.m. UTC | #2
On Sun, 4 Dec 2022 at 17:24, Jonathan Cameron <jic23@kernel.org> wrote:
>
> On Sun,  4 Dec 2022 08:15:54 +0200
> Dmitry Baryshkov <dmitry.baryshkov@linaro.org> wrote:
>
> > Several ADC channels are bound to the Multi Purpose Pins (MPPs). Allow
> > specifying such channels using the mppN device node (as used on apq8060
> > dragonboard).
> >
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
>
> So I understand this more, why do the node names have to have anything to
> do with the particular pin? I'm assuming the reg value provides that
> relationship.

Yes, the reg provides this relationship. If I understand correctly,
the dts authors (see arch/arm/boot/dts/qcom-apq8060-dragonboard.dts)
wanted to point out that these channels are connected to MPP pins
rather than raw adc channels (e.g. vcoin, vbat, etc).

>
> > ---
> >  Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml b/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml
> > index d186b713d6a7..fee30e6ddd62 100644
> > --- a/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml
> > +++ b/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml
> > @@ -64,7 +64,7 @@ required:
> >    - adc-channel@f
> >
> >  patternProperties:
> > -  "^(adc-channel@)[0-9a-f]$":
> > +  "^(adc-channel|mpp[0-9]+)@[0-9a-f]$":
> >      type: object
> >      description: |
> >        ADC channel specific configuration.
>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml b/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml
index d186b713d6a7..fee30e6ddd62 100644
--- a/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/qcom,pm8018-adc.yaml
@@ -64,7 +64,7 @@  required:
   - adc-channel@f
 
 patternProperties:
-  "^(adc-channel@)[0-9a-f]$":
+  "^(adc-channel|mpp[0-9]+)@[0-9a-f]$":
     type: object
     description: |
       ADC channel specific configuration.