On Sun, 27 Jun 2021 17:32:34 +0100, Jonathan Cameron wrote:

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Binding is a little stricter than the Linux driver.

It requires vcc-supply to be present for devices that don't have
an internal reference, whereas the driver just prints a message and
carries on.  Given this means that it is impossible to establish
a scaling of the output channel, let us make it required in the binding
schema.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
---
 .../bindings/iio/dac/adi,ad5446.yaml          | 105 ++++++++++++++++++
 1 file changed, 105 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/linux-dt-review/Documentation/devicetree/bindings/iio/dac/ti,dac7512.example.dt.yaml: dac@0: 'vcc-supply' is a required property
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/dac/adi,ad5446.yaml
\ndoc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1497723

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

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.