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[1/2] dt-bindings: iio: ad74413r: allow setting sink current for digital input

Message ID 20230302134922.1120217-2-linux@rasmusvillemoes.dk
State Changes Requested, archived
Headers show
Series iio: ad74413r: allow setting sink current for digital input | expand

Checks

Context Check Description
robh/checkpatch success
robh/patch-applied success
robh/dt-meta-schema fail build log

Commit Message

Rasmus Villemoes March 2, 2023, 1:49 p.m. UTC
Depending on the actual hardware wired up to a digital input channel,
it may be necessary to configure the ad74413r to sink a small
current. For example, in the case of a simple mechanical switch, the
charge on the external 68 nF capacitor (cf. the data sheet's Figure
34) will keep the channel as reading high even after the switch is
turned off again.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
 .../devicetree/bindings/iio/addac/adi,ad74413r.yaml    | 10 ++++++++++
 1 file changed, 10 insertions(+)

Comments

Rob Herring (Arm) March 2, 2023, 2:24 p.m. UTC | #1
On Thu, 02 Mar 2023 14:49:20 +0100, Rasmus Villemoes wrote:
> Depending on the actual hardware wired up to a digital input channel,
> it may be necessary to configure the ad74413r to sink a small
> current. For example, in the case of a simple mechanical switch, the
> charge on the external 68 nF capacitor (cf. the data sheet's Figure
> 34) will keep the channel as reading high even after the switch is
> turned off again.
> 
> Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
> ---
>  .../devicetree/bindings/iio/addac/adi,ad74413r.yaml    | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml: patternProperties:^channel@[0-3]$:properties:drive-strength-microamp: '$ref' should not be valid under {'const': '$ref'}
	hint: Standard unit suffix properties don't need a type $ref
	from schema $id: http://devicetree.org/meta-schemas/core.yaml#

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230302134922.1120217-2-linux@rasmusvillemoes.dk

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
index 9eb3ecc8bbc8..fcae300182f7 100644
--- a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
+++ b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
@@ -101,6 +101,16 @@  patternProperties:
           When not configured as a comparator, the GPO will be treated as an
           output-only GPIO.
 
+      drive-strength-microamp:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: |
+          For channels configured as digital input, this configures the sink
+          current.
+        minimum: 0
+        maximum: 1800
+        default: 0
+        multipleOf: 120
+
     required:
       - reg