* [PATCH v3] dt-bindings: hwmon: Convert NTC thermistor to YAML
@ 2021-09-22 23:39 Linus Walleij
2021-09-23 13:10 ` Rob Herring
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Linus Walleij @ 2021-09-22 23:39 UTC (permalink / raw)
To: Jean Delvare, Guenter Roeck
Cc: linux-hwmon, Linus Walleij, Javier Martinez Canillas,
Johannes Pointner, Peter Rosin, Jonathan Cameron, devicetree
This converts the NTC thermistor DT bindings to YAML. Some care had to
be taken since I had to add some illustrations to make the connection
layouts graspable.
Cc: Javier Martinez Canillas <javier@dowhile0.org>
Cc: Johannes Pointner <johannes.pointner@gmail.com>
Cc: Peter Rosin <peda@axentia.se>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v2->v3:
- Rebase on v5.15-rc1
- Drop comment reference to thermal-sensor.yaml
- Keep the oneOf rather than using an enum for the compatible:
I can't figure out how to make deprecated work for enums?
https://lore.kernel.org/linux-hwmon/CACRpkdZDLSA5YJtc3XCkfPZUNqo1MOWLBwVDGQ4vN8cDXD3aYg@mail.gmail.com/
ChangeLog v1->v2:
- Realize I need to CC devicetree@vger.kernel.org on this.
- Fix Javier's mail address.
- Drop Naveen's mail (bouncing)
---
.../bindings/hwmon/ntc-thermistor.yaml | 141 ++++++++++++++++++
.../bindings/hwmon/ntc_thermistor.txt | 44 ------
2 files changed, 141 insertions(+), 44 deletions(-)
create mode 100644 Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml
delete mode 100644 Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
diff --git a/Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml b/Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml
new file mode 100644
index 000000000000..9e77cee07dbc
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml
@@ -0,0 +1,141 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+---
+$id: http://devicetree.org/schemas/hwmon/ntc-thermistor.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NTC thermistor temperature sensors
+
+maintainers:
+ - Naveen Krishna Chatradhi <ch.naveen@samsung.com>
+ - Linus Walleij <linus.walleij@linaro.org>
+
+description: |
+ Thermistors with negative temperature coefficient (NTC) are resistors that
+ vary in resistance in an often non-linear way in relation to temperature.
+ The negative temperature coefficient means that the resistance decreases
+ as the temperature rises. Since the relationship between resistance and
+ temperature is non-linear, software drivers most often need to use a look
+ up table and interpolation to get from resistance to temperature.
+
+ When used in practice, a thermistor is often connected between ground, a
+ pull-up resistor or/and a pull-down resistor and a fixed voltage like this:
+
+ + e.g. 5V = pull-up voltage (puv)
+ |
+ +-+
+ | |
+ | | Pull-up resistor
+ | | (puo)
+ +-+
+ |-------------------------o
+ +-+ | ^
+ | |/ |
+ | / |
+ |/| Thermistor | Measured voltage (mv)
+ / | | "connected ground"
+ /| | |
+ +-+ |
+ |-------------------------o
+ +-+ ^
+ | | |
+ | | Pull-down resistor | Measured voltage (mv)
+ | | (pdo) | "connected positive"
+ +-+ |
+ | |
+ | v
+ + GND GND
+
+ The arrangements of where we measure the voltage over the thermistor are
+ called "connected ground" and "connected positive" and shall be understood as
+ the cases when either pull-up or pull-down resistance is zero.
+
+ If the pull-up resistance is 0 one end of the thermistor is connected to the
+ positive voltage and we get the thermistor on top of a pull-down resistor
+ and we take the measure between the thermistor and the pull-down resistor.
+
+ Conversely if the pull-down resistance is zero, one end of the thermistor is
+ connected to ground and we get the thermistor under the pull-up resistor
+ and we take the measure between the pull-up resistor and the thermistor.
+
+ We can use both pull-up and pull-down resistors at the same time, and then
+ the figure illustrates where the voltage will be measured for the "connected
+ ground" and "connected positive" cases.
+
+properties:
+ $nodename:
+ pattern: "^thermistor(.*)?$"
+
+ compatible:
+ oneOf:
+ - const: epcos,b57330v2103
+ - const: epcos,b57891s0103
+ - const: murata,ncp15wb473
+ - const: murata,ncp18wb473
+ - const: murata,ncp21wb473
+ - const: murata,ncp03wb473
+ - const: murata,ncp15wl333
+ - const: murata,ncp03wf104
+ - const: murata,ncp15xh103
+ # Deprecated "ntp," compatible strings
+ - const: ntc,ncp15wb473
+ deprecated: true
+ - const: ntc,ncp18wb473
+ deprecated: true
+ - const: ntc,ncp21wb473
+ deprecated: true
+ - const: ntc,ncp03wb473
+ deprecated: true
+ - const: ntc,ncp15wl333
+ deprecated: true
+
+ "#thermal-sensor-cells":
+ description: Thermal sensor cells if used for thermal sensoring.
+ const: 0
+
+ pullup-uv:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Pull-up voltage in micro volts. Must always be specified.
+
+ pullup-ohm:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Pull-up resistance in ohms. Must always be specified, even
+ if zero.
+
+ pulldown-ohm:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Pull-down resistance in ohms. Must always be specified, even
+ if zero.
+
+ connected-positive:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: Indicates how the thermistor is connected in series with
+ a pull-up and/or a pull-down resistor. See the description above for
+ an illustration. If this flag is NOT specified, the thermistor is assumed
+ to be connected-ground, which usually means a pull-down resistance of
+ zero but complex arrangements are possible.
+
+ # See /schemas/iio/adc/adc.yaml
+ io-channels:
+ maxItems: 1
+ description: IIO ADC channel to read the voltage over the resistor. Must
+ always be specified.
+
+required:
+ - compatible
+ - pullup-uv
+ - pullup-ohm
+ - pulldown-ohm
+ - io-channels
+
+additionalProperties: false
+
+examples:
+ - |
+ thermistor0 {
+ compatible = "murata,ncp18wb473";
+ io-channels = <&gpadc 0x06>;
+ pullup-uv = <1800000>;
+ pullup-ohm = <220000>;
+ pulldown-ohm = <0>;
+ #thermal-sensor-cells = <0>;
+ };
diff --git a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
deleted file mode 100644
index 4c5c3712970e..000000000000
--- a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
+++ /dev/null
@@ -1,44 +0,0 @@
-NTC Thermistor hwmon sensors
--------------------------------
-
-Requires node properties:
-- "compatible" value : one of
- "epcos,b57330v2103"
- "epcos,b57891s0103"
- "murata,ncp15wb473"
- "murata,ncp18wb473"
- "murata,ncp21wb473"
- "murata,ncp03wb473"
- "murata,ncp15wl333"
- "murata,ncp03wf104"
- "murata,ncp15xh103"
-
-/* Usage of vendor name "ntc" is deprecated */
-<DEPRECATED> "ntc,ncp15wb473"
-<DEPRECATED> "ntc,ncp18wb473"
-<DEPRECATED> "ntc,ncp21wb473"
-<DEPRECATED> "ntc,ncp03wb473"
-<DEPRECATED> "ntc,ncp15wl333"
-
-- "pullup-uv" Pull up voltage in micro volts
-- "pullup-ohm" Pull up resistor value in ohms
-- "pulldown-ohm" Pull down resistor value in ohms
-- "connected-positive" Always ON, If not specified.
- Status change is possible.
-- "io-channels" Channel node of ADC to be used for
- conversion.
-
-Optional node properties:
-- "#thermal-sensor-cells" Used to expose itself to thermal fw.
-
-Read more about iio bindings at
- https://github.com/devicetree-org/dt-schema/blob/master/schemas/iio/
-
-Example:
- ncp15wb473@0 {
- compatible = "murata,ncp15wb473";
- pullup-uv = <1800000>;
- pullup-ohm = <47000>;
- pulldown-ohm = <0>;
- io-channels = <&adc 3>;
- };
--
2.31.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v3] dt-bindings: hwmon: Convert NTC thermistor to YAML
2021-09-22 23:39 [PATCH v3] dt-bindings: hwmon: Convert NTC thermistor to YAML Linus Walleij
@ 2021-09-23 13:10 ` Rob Herring
2021-09-23 16:41 ` Rob Herring
2021-10-08 12:56 ` Guenter Roeck
2 siblings, 0 replies; 4+ messages in thread
From: Rob Herring @ 2021-09-23 13:10 UTC (permalink / raw)
To: Linus Walleij
Cc: Peter Rosin, Jean Delvare, devicetree, Johannes Pointner,
Guenter Roeck, linux-hwmon, Javier Martinez Canillas,
Jonathan Cameron
On Thu, 23 Sep 2021 01:39:01 +0200, Linus Walleij wrote:
> This converts the NTC thermistor DT bindings to YAML. Some care had to
> be taken since I had to add some illustrations to make the connection
> layouts graspable.
>
> Cc: Javier Martinez Canillas <javier@dowhile0.org>
> Cc: Johannes Pointner <johannes.pointner@gmail.com>
> Cc: Peter Rosin <peda@axentia.se>
> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> Cc: devicetree@vger.kernel.org
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> ChangeLog v2->v3:
> - Rebase on v5.15-rc1
> - Drop comment reference to thermal-sensor.yaml
> - Keep the oneOf rather than using an enum for the compatible:
> I can't figure out how to make deprecated work for enums?
> https://lore.kernel.org/linux-hwmon/CACRpkdZDLSA5YJtc3XCkfPZUNqo1MOWLBwVDGQ4vN8cDXD3aYg@mail.gmail.com/
> ChangeLog v1->v2:
> - Realize I need to CC devicetree@vger.kernel.org on this.
> - Fix Javier's mail address.
> - Drop Naveen's mail (bouncing)
> ---
> .../bindings/hwmon/ntc-thermistor.yaml | 141 ++++++++++++++++++
> .../bindings/hwmon/ntc_thermistor.txt | 44 ------
> 2 files changed, 141 insertions(+), 44 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml
> delete mode 100644 Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
>
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/adc/samsung,exynos-adc.example.dt.yaml: ncp15wb473: $nodename:0: 'ncp15wb473' does not match '^thermistor(.*)?$'
From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml
doc reference errors (make refcheckdocs):
See https://patchwork.ozlabs.org/patch/1531471
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.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v3] dt-bindings: hwmon: Convert NTC thermistor to YAML
2021-09-22 23:39 [PATCH v3] dt-bindings: hwmon: Convert NTC thermistor to YAML Linus Walleij
2021-09-23 13:10 ` Rob Herring
@ 2021-09-23 16:41 ` Rob Herring
2021-10-08 12:56 ` Guenter Roeck
2 siblings, 0 replies; 4+ messages in thread
From: Rob Herring @ 2021-09-23 16:41 UTC (permalink / raw)
To: Linus Walleij
Cc: devicetree, Peter Rosin, Guenter Roeck, Javier Martinez Canillas,
Jean Delvare, Johannes Pointner, linux-hwmon, Jonathan Cameron
On Thu, 23 Sep 2021 01:39:01 +0200, Linus Walleij wrote:
> This converts the NTC thermistor DT bindings to YAML. Some care had to
> be taken since I had to add some illustrations to make the connection
> layouts graspable.
>
> Cc: Javier Martinez Canillas <javier@dowhile0.org>
> Cc: Johannes Pointner <johannes.pointner@gmail.com>
> Cc: Peter Rosin <peda@axentia.se>
> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> Cc: devicetree@vger.kernel.org
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> ChangeLog v2->v3:
> - Rebase on v5.15-rc1
> - Drop comment reference to thermal-sensor.yaml
> - Keep the oneOf rather than using an enum for the compatible:
> I can't figure out how to make deprecated work for enums?
> https://lore.kernel.org/linux-hwmon/CACRpkdZDLSA5YJtc3XCkfPZUNqo1MOWLBwVDGQ4vN8cDXD3aYg@mail.gmail.com/
> ChangeLog v1->v2:
> - Realize I need to CC devicetree@vger.kernel.org on this.
> - Fix Javier's mail address.
> - Drop Naveen's mail (bouncing)
> ---
> .../bindings/hwmon/ntc-thermistor.yaml | 141 ++++++++++++++++++
> .../bindings/hwmon/ntc_thermistor.txt | 44 ------
> 2 files changed, 141 insertions(+), 44 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml
> delete mode 100644 Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
>
The error introduced can be fixed in a separate patch, so:
Reviewed-by: Rob Herring <robh@kernel.org>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v3] dt-bindings: hwmon: Convert NTC thermistor to YAML
2021-09-22 23:39 [PATCH v3] dt-bindings: hwmon: Convert NTC thermistor to YAML Linus Walleij
2021-09-23 13:10 ` Rob Herring
2021-09-23 16:41 ` Rob Herring
@ 2021-10-08 12:56 ` Guenter Roeck
2 siblings, 0 replies; 4+ messages in thread
From: Guenter Roeck @ 2021-10-08 12:56 UTC (permalink / raw)
To: Linus Walleij
Cc: Jean Delvare, linux-hwmon, Javier Martinez Canillas,
Johannes Pointner, Peter Rosin, Jonathan Cameron, devicetree
On Thu, Sep 23, 2021 at 01:39:01AM +0200, Linus Walleij wrote:
> This converts the NTC thermistor DT bindings to YAML. Some care had to
> be taken since I had to add some illustrations to make the connection
> layouts graspable.
>
> Cc: Javier Martinez Canillas <javier@dowhile0.org>
> Cc: Johannes Pointner <johannes.pointner@gmail.com>
> Cc: Peter Rosin <peda@axentia.se>
> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> Cc: devicetree@vger.kernel.org
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> Reviewed-by: Rob Herring <robh@kernel.org>
Applied.
Thanks,
Guenter
> ---
> ChangeLog v2->v3:
> - Rebase on v5.15-rc1
> - Drop comment reference to thermal-sensor.yaml
> - Keep the oneOf rather than using an enum for the compatible:
> I can't figure out how to make deprecated work for enums?
> https://lore.kernel.org/linux-hwmon/CACRpkdZDLSA5YJtc3XCkfPZUNqo1MOWLBwVDGQ4vN8cDXD3aYg@mail.gmail.com/
> ChangeLog v1->v2:
> - Realize I need to CC devicetree@vger.kernel.org on this.
> - Fix Javier's mail address.
> - Drop Naveen's mail (bouncing)
> ---
> .../bindings/hwmon/ntc-thermistor.yaml | 141 ++++++++++++++++++
> .../bindings/hwmon/ntc_thermistor.txt | 44 ------
> 2 files changed, 141 insertions(+), 44 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml
> delete mode 100644 Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
>
> diff --git a/Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml b/Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml
> new file mode 100644
> index 000000000000..9e77cee07dbc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/ntc-thermistor.yaml
> @@ -0,0 +1,141 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +---
> +$id: http://devicetree.org/schemas/hwmon/ntc-thermistor.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NTC thermistor temperature sensors
> +
> +maintainers:
> + - Naveen Krishna Chatradhi <ch.naveen@samsung.com>
> + - Linus Walleij <linus.walleij@linaro.org>
> +
> +description: |
> + Thermistors with negative temperature coefficient (NTC) are resistors that
> + vary in resistance in an often non-linear way in relation to temperature.
> + The negative temperature coefficient means that the resistance decreases
> + as the temperature rises. Since the relationship between resistance and
> + temperature is non-linear, software drivers most often need to use a look
> + up table and interpolation to get from resistance to temperature.
> +
> + When used in practice, a thermistor is often connected between ground, a
> + pull-up resistor or/and a pull-down resistor and a fixed voltage like this:
> +
> + + e.g. 5V = pull-up voltage (puv)
> + |
> + +-+
> + | |
> + | | Pull-up resistor
> + | | (puo)
> + +-+
> + |-------------------------o
> + +-+ | ^
> + | |/ |
> + | / |
> + |/| Thermistor | Measured voltage (mv)
> + / | | "connected ground"
> + /| | |
> + +-+ |
> + |-------------------------o
> + +-+ ^
> + | | |
> + | | Pull-down resistor | Measured voltage (mv)
> + | | (pdo) | "connected positive"
> + +-+ |
> + | |
> + | v
> + + GND GND
> +
> + The arrangements of where we measure the voltage over the thermistor are
> + called "connected ground" and "connected positive" and shall be understood as
> + the cases when either pull-up or pull-down resistance is zero.
> +
> + If the pull-up resistance is 0 one end of the thermistor is connected to the
> + positive voltage and we get the thermistor on top of a pull-down resistor
> + and we take the measure between the thermistor and the pull-down resistor.
> +
> + Conversely if the pull-down resistance is zero, one end of the thermistor is
> + connected to ground and we get the thermistor under the pull-up resistor
> + and we take the measure between the pull-up resistor and the thermistor.
> +
> + We can use both pull-up and pull-down resistors at the same time, and then
> + the figure illustrates where the voltage will be measured for the "connected
> + ground" and "connected positive" cases.
> +
> +properties:
> + $nodename:
> + pattern: "^thermistor(.*)?$"
> +
> + compatible:
> + oneOf:
> + - const: epcos,b57330v2103
> + - const: epcos,b57891s0103
> + - const: murata,ncp15wb473
> + - const: murata,ncp18wb473
> + - const: murata,ncp21wb473
> + - const: murata,ncp03wb473
> + - const: murata,ncp15wl333
> + - const: murata,ncp03wf104
> + - const: murata,ncp15xh103
> + # Deprecated "ntp," compatible strings
> + - const: ntc,ncp15wb473
> + deprecated: true
> + - const: ntc,ncp18wb473
> + deprecated: true
> + - const: ntc,ncp21wb473
> + deprecated: true
> + - const: ntc,ncp03wb473
> + deprecated: true
> + - const: ntc,ncp15wl333
> + deprecated: true
> +
> + "#thermal-sensor-cells":
> + description: Thermal sensor cells if used for thermal sensoring.
> + const: 0
> +
> + pullup-uv:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: Pull-up voltage in micro volts. Must always be specified.
> +
> + pullup-ohm:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: Pull-up resistance in ohms. Must always be specified, even
> + if zero.
> +
> + pulldown-ohm:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: Pull-down resistance in ohms. Must always be specified, even
> + if zero.
> +
> + connected-positive:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description: Indicates how the thermistor is connected in series with
> + a pull-up and/or a pull-down resistor. See the description above for
> + an illustration. If this flag is NOT specified, the thermistor is assumed
> + to be connected-ground, which usually means a pull-down resistance of
> + zero but complex arrangements are possible.
> +
> + # See /schemas/iio/adc/adc.yaml
> + io-channels:
> + maxItems: 1
> + description: IIO ADC channel to read the voltage over the resistor. Must
> + always be specified.
> +
> +required:
> + - compatible
> + - pullup-uv
> + - pullup-ohm
> + - pulldown-ohm
> + - io-channels
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + thermistor0 {
> + compatible = "murata,ncp18wb473";
> + io-channels = <&gpadc 0x06>;
> + pullup-uv = <1800000>;
> + pullup-ohm = <220000>;
> + pulldown-ohm = <0>;
> + #thermal-sensor-cells = <0>;
> + };
> diff --git a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
> deleted file mode 100644
> index 4c5c3712970e..000000000000
> --- a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
> +++ /dev/null
> @@ -1,44 +0,0 @@
> -NTC Thermistor hwmon sensors
> --------------------------------
> -
> -Requires node properties:
> -- "compatible" value : one of
> - "epcos,b57330v2103"
> - "epcos,b57891s0103"
> - "murata,ncp15wb473"
> - "murata,ncp18wb473"
> - "murata,ncp21wb473"
> - "murata,ncp03wb473"
> - "murata,ncp15wl333"
> - "murata,ncp03wf104"
> - "murata,ncp15xh103"
> -
> -/* Usage of vendor name "ntc" is deprecated */
> -<DEPRECATED> "ntc,ncp15wb473"
> -<DEPRECATED> "ntc,ncp18wb473"
> -<DEPRECATED> "ntc,ncp21wb473"
> -<DEPRECATED> "ntc,ncp03wb473"
> -<DEPRECATED> "ntc,ncp15wl333"
> -
> -- "pullup-uv" Pull up voltage in micro volts
> -- "pullup-ohm" Pull up resistor value in ohms
> -- "pulldown-ohm" Pull down resistor value in ohms
> -- "connected-positive" Always ON, If not specified.
> - Status change is possible.
> -- "io-channels" Channel node of ADC to be used for
> - conversion.
> -
> -Optional node properties:
> -- "#thermal-sensor-cells" Used to expose itself to thermal fw.
> -
> -Read more about iio bindings at
> - https://github.com/devicetree-org/dt-schema/blob/master/schemas/iio/
> -
> -Example:
> - ncp15wb473@0 {
> - compatible = "murata,ncp15wb473";
> - pullup-uv = <1800000>;
> - pullup-ohm = <47000>;
> - pulldown-ohm = <0>;
> - io-channels = <&adc 3>;
> - };
^ permalink raw reply [flat|nested] 4+ messages in thread
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2021-09-22 23:39 [PATCH v3] dt-bindings: hwmon: Convert NTC thermistor to YAML Linus Walleij
2021-09-23 13:10 ` Rob Herring
2021-09-23 16:41 ` Rob Herring
2021-10-08 12:56 ` Guenter Roeck
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