Add dt-bindings for ltc2991 octal i2c voltage, current and temperature
monitor.
Signed-off-by: Antoniu Miclaus <[email protected]>
---
changes in v3:
- expand description for differential channels and temperature channels by
mentioning the pin configuration that is set via these properties.
- add `additionalProperties: false` for the channel properties
- make `reg` required for channel properties
- make `adi,temperature-enable` and `shunt-resistor-micro-ohms` mutually
exclusive following the approach suggested in review.
.../bindings/hwmon/adi,ltc2991.yaml | 128 ++++++++++++++++++
1 file changed, 128 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml
diff --git a/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml b/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml
new file mode 100644
index 000000000000..011e5b65c79c
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml
@@ -0,0 +1,128 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/hwmon/adi,ltc2991.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices LTC2991 Octal I2C Voltage, Current and Temperature Monitor
+
+maintainers:
+ - Antoniu Miclaus <[email protected]>
+
+description: |
+ The LTC2991 is used to monitor system temperatures, voltages and currents.
+ Through the I2C serial interface, the eight monitors can individually measure
+ supply voltages and can be paired for differential measurements of current
+ sense resistors or temperature sensing transistors.
+
+ Datasheet:
+ https://www.analog.com/en/products/ltc2991.html
+
+properties:
+ compatible:
+ const: adi,ltc2991
+
+ reg:
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ vcc-supply: true
+
+patternProperties:
+ "^channel@[0-3]$":
+ type: object
+ description:
+ Represents the differential/temperature channels.
+
+ properties:
+ reg:
+ description:
+ The channel number. LTC2991 can monitor 4 currents/temperatures.
+ items:
+ minimum: 0
+ maximum: 3
+
+ shunt-resistor-micro-ohms:
+ description:
+ The value of curent sense resistor in micro ohms. Pin configuration is
+ set for differential input pair.
+
+ adi,temperature-enable:
+ description:
+ Enables temperature readings. Pin configuration is set for remote
+ diode temperature measurement.
+ type: boolean
+
+ required:
+ - reg
+
+ allOf:
+ - if:
+ required:
+ - shunt-resistor-micro-ohms
+ then:
+ properties:
+ adi,temperature-enable: false
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - vcc-supply
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ hwmon@48 {
+ compatible = "adi,ltc2991";
+ reg = <0x48>;
+ vcc-supply = <&vcc>;
+ };
+ };
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ hwmon@48 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "adi,ltc2991";
+ reg = <0x48>;
+ vcc-supply = <&vcc>;
+
+ channel@0 {
+ reg = <0x0>;
+ shunt-resistor-micro-ohms = <100000>;
+ };
+
+ channel@1 {
+ reg = <0x1>;
+ shunt-resistor-micro-ohms = <100000>;
+ };
+
+ channel@2 {
+ reg = <0x2>;
+ adi,temperature-enable;
+ };
+
+ channel@3 {
+ reg = <0x3>;
+ adi,temperature-enable;
+ };
+ };
+ };
+...
--
2.42.0
On Tue, Oct 03, 2023 at 11:00:39AM +0300, Antoniu Miclaus wrote:
> Add dt-bindings for ltc2991 octal i2c voltage, current and temperature
> monitor.
>
> Signed-off-by: Antoniu Miclaus <[email protected]>
> ---
> changes in v3:
> - expand description for differential channels and temperature channels by
> mentioning the pin configuration that is set via these properties.
> - add `additionalProperties: false` for the channel properties
> - make `reg` required for channel properties
> - make `adi,temperature-enable` and `shunt-resistor-micro-ohms` mutually
> exclusive following the approach suggested in review.
Thanks for the updates.
Reviewed-by: Conor Dooley <[email protected]>
Cheers,
Conor.
> .../bindings/hwmon/adi,ltc2991.yaml | 128 ++++++++++++++++++
> 1 file changed, 128 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml
>
> diff --git a/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml b/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml
> new file mode 100644
> index 000000000000..011e5b65c79c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml
> @@ -0,0 +1,128 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +
> +$id: http://devicetree.org/schemas/hwmon/adi,ltc2991.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices LTC2991 Octal I2C Voltage, Current and Temperature Monitor
> +
> +maintainers:
> + - Antoniu Miclaus <[email protected]>
> +
> +description: |
> + The LTC2991 is used to monitor system temperatures, voltages and currents.
> + Through the I2C serial interface, the eight monitors can individually measure
> + supply voltages and can be paired for differential measurements of current
> + sense resistors or temperature sensing transistors.
> +
> + Datasheet:
> + https://www.analog.com/en/products/ltc2991.html
> +
> +properties:
> + compatible:
> + const: adi,ltc2991
> +
> + reg:
> + maxItems: 1
> +
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 0
> +
> + vcc-supply: true
> +
> +patternProperties:
> + "^channel@[0-3]$":
> + type: object
> + description:
> + Represents the differential/temperature channels.
> +
> + properties:
> + reg:
> + description:
> + The channel number. LTC2991 can monitor 4 currents/temperatures.
> + items:
> + minimum: 0
> + maximum: 3
> +
> + shunt-resistor-micro-ohms:
> + description:
> + The value of curent sense resistor in micro ohms. Pin configuration is
> + set for differential input pair.
> +
> + adi,temperature-enable:
> + description:
> + Enables temperature readings. Pin configuration is set for remote
> + diode temperature measurement.
> + type: boolean
> +
> + required:
> + - reg
> +
> + allOf:
> + - if:
> + required:
> + - shunt-resistor-micro-ohms
> + then:
> + properties:
> + adi,temperature-enable: false
> +
> + additionalProperties: false
> +
> +required:
> + - compatible
> + - reg
> + - vcc-supply
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + hwmon@48 {
> + compatible = "adi,ltc2991";
> + reg = <0x48>;
> + vcc-supply = <&vcc>;
> + };
> + };
> + - |
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + hwmon@48 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + compatible = "adi,ltc2991";
> + reg = <0x48>;
> + vcc-supply = <&vcc>;
> +
> + channel@0 {
> + reg = <0x0>;
> + shunt-resistor-micro-ohms = <100000>;
> + };
> +
> + channel@1 {
> + reg = <0x1>;
> + shunt-resistor-micro-ohms = <100000>;
> + };
> +
> + channel@2 {
> + reg = <0x2>;
> + adi,temperature-enable;
> + };
> +
> + channel@3 {
> + reg = <0x3>;
> + adi,temperature-enable;
> + };
> + };
> + };
> +...
> --
> 2.42.0
>