2021-04-28 07:33:40

by Oleksij Rempel

[permalink] [raw]
Subject: [PATCH v6 1/3] dt-bindings:iio:adc: add generic settling-time-us and oversampling-ratio channel properties

Settling time and over sampling is a typical challenge for different IIO ADC
devices. So, introduce channel specific settling-time-us and oversampling-ratio
properties to cover this use case.

Signed-off-by: Oleksij Rempel <[email protected]>
---
Documentation/devicetree/bindings/iio/adc/adc.yaml | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/adc.yaml b/Documentation/devicetree/bindings/iio/adc/adc.yaml
index 912a7635edc4..db348fcbb52c 100644
--- a/Documentation/devicetree/bindings/iio/adc/adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adc.yaml
@@ -39,4 +39,16 @@ properties:
The first value specifies the positive input pin, the second
specifies the negative input pin.

+ settling-time-us:
+ description:
+ Time between enabling the channel and first stable readings.
+
+ oversampling-ratio:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Oversampling is used as replacement of or addition to the low-pass filter.
+ In some cases, the desired filtering characteristics are a function the
+ device design and can interact with other characteristics such as
+ settling time.
+
additionalProperties: true
--
2.29.2


2021-04-28 20:51:11

by Jonathan Cameron

[permalink] [raw]
Subject: Re: [PATCH v6 1/3] dt-bindings:iio:adc: add generic settling-time-us and oversampling-ratio channel properties

On Wed, 28 Apr 2021 09:32:06 +0200
Oleksij Rempel <[email protected]> wrote:

> Settling time and over sampling is a typical challenge for different IIO ADC
> devices. So, introduce channel specific settling-time-us and oversampling-ratio
> properties to cover this use case.
>
> Signed-off-by: Oleksij Rempel <[email protected]>
This and patch 2 both look good to me. Given Rob gave a minor comment on the
previous version I don't feel I need him to look at this again.

Will pick up in a few days if no other reviews come in to require a v7.

Thanks,

Jonathan

> ---
> Documentation/devicetree/bindings/iio/adc/adc.yaml | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/adc.yaml b/Documentation/devicetree/bindings/iio/adc/adc.yaml
> index 912a7635edc4..db348fcbb52c 100644
> --- a/Documentation/devicetree/bindings/iio/adc/adc.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/adc.yaml
> @@ -39,4 +39,16 @@ properties:
> The first value specifies the positive input pin, the second
> specifies the negative input pin.
>
> + settling-time-us:
> + description:
> + Time between enabling the channel and first stable readings.
> +
> + oversampling-ratio:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description:
> + Oversampling is used as replacement of or addition to the low-pass filter.
> + In some cases, the desired filtering characteristics are a function the
> + device design and can interact with other characteristics such as
> + settling time.
> +
> additionalProperties: true

2021-04-29 04:28:42

by Oleksij Rempel

[permalink] [raw]
Subject: Re: [PATCH v6 1/3] dt-bindings:iio:adc: add generic settling-time-us and oversampling-ratio channel properties

On Wed, Apr 28, 2021 at 05:59:31PM +0100, Jonathan Cameron wrote:
> On Wed, 28 Apr 2021 09:32:06 +0200
> Oleksij Rempel <[email protected]> wrote:
>
> > Settling time and over sampling is a typical challenge for different IIO ADC
> > devices. So, introduce channel specific settling-time-us and oversampling-ratio
> > properties to cover this use case.
> >
> > Signed-off-by: Oleksij Rempel <[email protected]>
> This and patch 2 both look good to me. Given Rob gave a minor comment on the
> previous version I don't feel I need him to look at this again.
>
> Will pick up in a few days if no other reviews come in to require a v7.

Ok, thank you!


> Thanks,
>
> Jonathan
>
> > ---
> > Documentation/devicetree/bindings/iio/adc/adc.yaml | 12 ++++++++++++
> > 1 file changed, 12 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/iio/adc/adc.yaml b/Documentation/devicetree/bindings/iio/adc/adc.yaml
> > index 912a7635edc4..db348fcbb52c 100644
> > --- a/Documentation/devicetree/bindings/iio/adc/adc.yaml
> > +++ b/Documentation/devicetree/bindings/iio/adc/adc.yaml
> > @@ -39,4 +39,16 @@ properties:
> > The first value specifies the positive input pin, the second
> > specifies the negative input pin.
> >
> > + settling-time-us:
> > + description:
> > + Time between enabling the channel and first stable readings.
> > +
> > + oversampling-ratio:
> > + $ref: /schemas/types.yaml#/definitions/uint32
> > + description:
> > + Oversampling is used as replacement of or addition to the low-pass filter.
> > + In some cases, the desired filtering characteristics are a function the
> > + device design and can interact with other characteristics such as
> > + settling time.
> > +
> > additionalProperties: true
>
>
>

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2021-04-30 20:29:37

by Rob Herring

[permalink] [raw]
Subject: Re: [PATCH v6 1/3] dt-bindings:iio:adc: add generic settling-time-us and oversampling-ratio channel properties

On Wed, 28 Apr 2021 09:32:06 +0200, Oleksij Rempel wrote:
> Settling time and over sampling is a typical challenge for different IIO ADC
> devices. So, introduce channel specific settling-time-us and oversampling-ratio
> properties to cover this use case.
>
> Signed-off-by: Oleksij Rempel <[email protected]>
> ---
> Documentation/devicetree/bindings/iio/adc/adc.yaml | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>

Reviewed-by: Rob Herring <[email protected]>