* [PATCH v2] dt-bindings: iio: afe: voltage-divider: Add io-channel-cells
@ 2024-01-30 11:18 Naresh Solanki
2024-01-30 11:42 ` Peter Rosin
2024-01-31 8:28 ` Krzysztof Kozlowski
0 siblings, 2 replies; 5+ messages in thread
From: Naresh Solanki @ 2024-01-30 11:18 UTC (permalink / raw)
To: Peter Rosin, Jonathan Cameron, Lars-Peter Clausen, Rob Herring,
Krzysztof Kozlowski, Conor Dooley
Cc: mazziesaccount, Naresh Solanki, linux-iio, devicetree, linux-kernel
voltage-divider is always an iio consumer at the same time it is
optionally an iio provider.
Hence add #io-channel-cells
Also update example.
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
---
.../bindings/iio/afe/voltage-divider.yaml | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml b/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
index dddf97b50549..09f10d7c4e02 100644
--- a/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
+++ b/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
@@ -39,6 +39,13 @@ properties:
description: |
Channel node of a voltage io-channel.
+ '#io-channel-cells':
+ description:
+ In addition to consuming the measurement services of an ADC,
+ the voltage divider can act as an provider of measurement
+ services to other devices.
+ const: 1
+
output-ohms:
description:
Resistance Rout over which the output voltage is measured. See full-ohms.
@@ -75,12 +82,17 @@ examples:
spi-max-frequency = <1000000>;
};
};
- sysv {
+ p12v_vd: sysv {
compatible = "voltage-divider";
io-channels = <&maxadc 1>;
+ #io-channel-cells = <1>;
/* Scale the system voltage by 22/222 to fit the ADC range. */
output-ohms = <22>;
full-ohms = <222>; /* 200 + 22 */
};
+ iio-hwmon {
+ compatible = "iio-hwmon";
+ io-channels = <&p12v_vd 0>;
+ };
...
base-commit: 861c0981648f5b64c86fd028ee622096eb7af05a
--
2.42.0
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH v2] dt-bindings: iio: afe: voltage-divider: Add io-channel-cells
2024-01-30 11:18 [PATCH v2] dt-bindings: iio: afe: voltage-divider: Add io-channel-cells Naresh Solanki
@ 2024-01-30 11:42 ` Peter Rosin
2024-01-30 11:48 ` Naresh Solanki
2024-01-31 8:28 ` Krzysztof Kozlowski
1 sibling, 1 reply; 5+ messages in thread
From: Peter Rosin @ 2024-01-30 11:42 UTC (permalink / raw)
To: Naresh Solanki, Jonathan Cameron, Lars-Peter Clausen,
Rob Herring, Krzysztof Kozlowski, Conor Dooley
Cc: mazziesaccount, linux-iio, devicetree, linux-kernel
Hi!
2024-01-30 at 12:18, Naresh Solanki wrote:
> voltage-divider is always an iio consumer at the same time it is
> optionally an iio provider.
> Hence add #io-channel-cells
> Also update example.
>
> Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
> ---
> .../bindings/iio/afe/voltage-divider.yaml | 14 +++++++++++++-
> 1 file changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml b/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> index dddf97b50549..09f10d7c4e02 100644
> --- a/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> +++ b/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> @@ -39,6 +39,13 @@ properties:
> description: |
> Channel node of a voltage io-channel.
>
> + '#io-channel-cells':
> + description:
> + In addition to consuming the measurement services of an ADC,
It doesn't really need to be an ADC. Anything with a voltage output
channel works (in theory). But sure, normally it would be an ADC...
> + the voltage divider can act as an provider of measurement
a provider
Cheers,
Peter
> + services to other devices.
> + const: 1
> +
> output-ohms:
...
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v2] dt-bindings: iio: afe: voltage-divider: Add io-channel-cells
2024-01-30 11:42 ` Peter Rosin
@ 2024-01-30 11:48 ` Naresh Solanki
2024-01-30 16:16 ` Jonathan Cameron
0 siblings, 1 reply; 5+ messages in thread
From: Naresh Solanki @ 2024-01-30 11:48 UTC (permalink / raw)
To: Peter Rosin
Cc: Jonathan Cameron, Lars-Peter Clausen, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, mazziesaccount, linux-iio,
devicetree, linux-kernel
Hi Peter,
On Tue, 30 Jan 2024 at 17:12, Peter Rosin <peda@axentia.se> wrote:
>
> Hi!
>
> 2024-01-30 at 12:18, Naresh Solanki wrote:
> > voltage-divider is always an iio consumer at the same time it is
> > optionally an iio provider.
> > Hence add #io-channel-cells
> > Also update example.
> >
> > Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
> > ---
> > .../bindings/iio/afe/voltage-divider.yaml | 14 +++++++++++++-
> > 1 file changed, 13 insertions(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml b/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> > index dddf97b50549..09f10d7c4e02 100644
> > --- a/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> > +++ b/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> > @@ -39,6 +39,13 @@ properties:
> > description: |
> > Channel node of a voltage io-channel.
> >
> > + '#io-channel-cells':
> > + description:
> > + In addition to consuming the measurement services of an ADC,
>
> It doesn't really need to be an ADC. Anything with a voltage output
> channel works (in theory). But sure, normally it would be an ADC...
Ack
>
> > + the voltage divider can act as an provider of measurement
>
> a provider
Ack
Will update as:
'#io-channel-cells':
description:
In addition to consuming the measurement services of an a voltage output
channel the voltage divider can act as a provider of measurement
services to other devices.
const: 1
Regards,
Naresh
>
> Cheers,
> Peter
>
> > + services to other devices.
> > + const: 1
> > +
> > output-ohms:
> ...
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v2] dt-bindings: iio: afe: voltage-divider: Add io-channel-cells
2024-01-30 11:48 ` Naresh Solanki
@ 2024-01-30 16:16 ` Jonathan Cameron
0 siblings, 0 replies; 5+ messages in thread
From: Jonathan Cameron @ 2024-01-30 16:16 UTC (permalink / raw)
To: Naresh Solanki
Cc: Peter Rosin, Jonathan Cameron, Lars-Peter Clausen, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, mazziesaccount, linux-iio,
devicetree, linux-kernel
On Tue, 30 Jan 2024 17:18:53 +0530
Naresh Solanki <naresh.solanki@9elements.com> wrote:
> Hi Peter,
>
>
> On Tue, 30 Jan 2024 at 17:12, Peter Rosin <peda@axentia.se> wrote:
> >
> > Hi!
> >
> > 2024-01-30 at 12:18, Naresh Solanki wrote:
> > > voltage-divider is always an iio consumer at the same time it is
> > > optionally an iio provider.
> > > Hence add #io-channel-cells
> > > Also update example.
> > >
> > > Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
> > > ---
> > > .../bindings/iio/afe/voltage-divider.yaml | 14 +++++++++++++-
> > > 1 file changed, 13 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml b/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> > > index dddf97b50549..09f10d7c4e02 100644
> > > --- a/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> > > +++ b/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> > > @@ -39,6 +39,13 @@ properties:
> > > description: |
> > > Channel node of a voltage io-channel.
> > >
> > > + '#io-channel-cells':
> > > + description:
> > > + In addition to consuming the measurement services of an ADC,
> >
> > It doesn't really need to be an ADC. Anything with a voltage output
> > channel works (in theory). But sure, normally it would be an ADC...
> Ack
> >
> > > + the voltage divider can act as an provider of measurement
> >
> > a provider
> Ack
>
> Will update as:
> '#io-channel-cells':
> description:
> In addition to consuming the measurement services of an a voltage output
That sounds like a DAC. It's an input voltage to that device.
Just go with voltage channel and rely on measurement services to make it clear what
it is.
> channel the voltage divider can act as a provider of measurement
> services to other devices.
> const: 1
>
> Regards,
> Naresh
> >
> > Cheers,
> > Peter
> >
> > > + services to other devices.
> > > + const: 1
> > > +
> > > output-ohms:
> > ...
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v2] dt-bindings: iio: afe: voltage-divider: Add io-channel-cells
2024-01-30 11:18 [PATCH v2] dt-bindings: iio: afe: voltage-divider: Add io-channel-cells Naresh Solanki
2024-01-30 11:42 ` Peter Rosin
@ 2024-01-31 8:28 ` Krzysztof Kozlowski
1 sibling, 0 replies; 5+ messages in thread
From: Krzysztof Kozlowski @ 2024-01-31 8:28 UTC (permalink / raw)
To: Naresh Solanki, Peter Rosin, Jonathan Cameron,
Lars-Peter Clausen, Rob Herring, Krzysztof Kozlowski,
Conor Dooley
Cc: mazziesaccount, linux-iio, devicetree, linux-kernel
On 30/01/2024 12:18, Naresh Solanki wrote:
> voltage-divider is always an iio consumer at the same time it is
> optionally an iio provider.
> Hence add #io-channel-cells
> Also update example.
> output-ohms:
> description:
> Resistance Rout over which the output voltage is measured. See full-ohms.
> @@ -75,12 +82,17 @@ examples:
> spi-max-frequency = <1000000>;
> };
> };
> - sysv {
> + p12v_vd: sysv {
> compatible = "voltage-divider";
> io-channels = <&maxadc 1>;
> + #io-channel-cells = <1>;
>
> /* Scale the system voltage by 22/222 to fit the ADC range. */
> output-ohms = <22>;
> full-ohms = <222>; /* 200 + 22 */
> };
> + iio-hwmon {
> + compatible = "iio-hwmon";
> + io-channels = <&p12v_vd 0>;
Why do you add unrelated example?
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 5+ messages in thread
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2024-01-30 11:18 [PATCH v2] dt-bindings: iio: afe: voltage-divider: Add io-channel-cells Naresh Solanki
2024-01-30 11:42 ` Peter Rosin
2024-01-30 11:48 ` Naresh Solanki
2024-01-30 16:16 ` Jonathan Cameron
2024-01-31 8:28 ` Krzysztof Kozlowski
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