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dt-bindings: hwmon: add support for MCP998X
Add devicetree schema for Microchip MCP998X/33 and MCP998XD/33D Multichannel Automotive Temperature Monitor Family. Signed-off-by: Victor Duicu <victor.duicu@microchip.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260403-add-mcp9982-hwmon-v12-1-b3bfb26ff136@microchip.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Victor Duicu
committed by
Guenter Roeck
Guenter Roeck
parent
3023c050af
commit
a345c1e3cd
237
Documentation/devicetree/bindings/hwmon/microchip,mcp9982.yaml
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237
Documentation/devicetree/bindings/hwmon/microchip,mcp9982.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/hwmon/microchip,mcp9982.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Microchip MCP998X/33 and MCP998XD/33D Temperature Monitor
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maintainers:
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- Victor Duicu <victor.duicu@microchip.com>
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description: |
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The MCP998X/33 and MCP998XD/33D family is a high-accuracy 2-wire
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multichannel automotive temperature monitor.
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The datasheet can be found here:
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https://ww1.microchip.com/downloads/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/MCP998X-Family-Data-Sheet-DS20006827.pdf
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properties:
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compatible:
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enum:
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- microchip,mcp9933
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- microchip,mcp9933d
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- microchip,mcp9982
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- microchip,mcp9982d
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- microchip,mcp9983
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- microchip,mcp9983d
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- microchip,mcp9984
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- microchip,mcp9984d
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- microchip,mcp9985
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- microchip,mcp9985d
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reg:
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maxItems: 1
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interrupts:
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minItems: 1
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maxItems: 2
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interrupt-names:
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description:
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The chip family has three different interrupt pins divided among them.
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The chips without "D" have alert-therm and therm-addr.
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The chips with "D" have alert-therm and sys-shtdwn.
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minItems: 1
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items:
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- enum: [alert-therm, therm-addr, sys-shtdwn]
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- enum: [therm-addr, sys-shtdwn]
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"#address-cells":
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const: 1
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"#size-cells":
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const: 0
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microchip,enable-anti-parallel:
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description:
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Enable anti-parallel diode mode operation.
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MCP9984/84D/85/85D and MCP9933/33D support reading two external diodes
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in anti-parallel connection on the same set of pins.
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type: boolean
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microchip,parasitic-res-on-channel1-2:
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description:
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Indicates that the chip and the diodes/transistors are sufficiently far
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apart that a parasitic resistance is added to the wires, which can affect
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the measurements. Due to the anti-parallel diode connections, channels
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1 and 2 are affected together.
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type: boolean
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microchip,parasitic-res-on-channel3-4:
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description:
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Indicates that the chip and the diodes/transistors are sufficiently far
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apart that a parasitic resistance is added to the wires, which can affect
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the measurements. Due to the anti-parallel diode connections, channels
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3 and 4 are affected together.
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type: boolean
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microchip,power-state:
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description:
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The chip can be set in Run state or Standby state. In Run state the ADC
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is converting on all channels at the programmed conversion rate.
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In Standby state the host must initiate a conversion cycle by writing
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to the One-Shot register.
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True value sets Run state.
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Chips with "D" in the name can only be set in Run mode.
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type: boolean
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vdd-supply: true
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patternProperties:
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"^channel@[1-4]$":
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description:
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Represents the external temperature channels to which
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a remote diode is connected.
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type: object
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properties:
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reg:
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items:
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maxItems: 1
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label:
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description: Unique name to identify which channel this is.
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required:
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- reg
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additionalProperties: false
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required:
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- compatible
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- reg
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- vdd-supply
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allOf:
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- if:
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properties:
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compatible:
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contains:
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enum:
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- microchip,mcp9982d
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- microchip,mcp9983d
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- microchip,mcp9984d
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- microchip,mcp9985d
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- microchip,mcp9933d
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then:
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properties:
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interrupt-names:
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items:
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enum:
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- alert-therm
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- sys-shtdwn
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required:
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- microchip,power-state
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- microchip,parasitic-res-on-channel1-2
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else:
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properties:
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microchip,power-state: true
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interrupt-names:
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items:
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enum:
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- alert-therm
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- therm-addr
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- if:
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properties:
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compatible:
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contains:
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enum:
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- microchip,mcp9983d
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- microchip,mcp9984d
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- microchip,mcp9985d
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then:
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required:
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- microchip,parasitic-res-on-channel3-4
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- if:
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properties:
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compatible:
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contains:
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enum:
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- microchip,mcp9982
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- microchip,mcp9982d
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then:
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properties:
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microchip,enable-anti-parallel: false
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patternProperties:
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"^channel@[2-4]$": false
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- if:
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properties:
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compatible:
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contains:
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enum:
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- microchip,mcp9983
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- microchip,mcp9983d
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then:
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properties:
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microchip,enable-anti-parallel: false
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patternProperties:
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"^channel@[3-4]$": false
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- if:
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properties:
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compatible:
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contains:
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enum:
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- microchip,mcp9933
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- microchip,mcp9933d
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then:
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patternProperties:
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"^channel@[3-4]$": false
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- if:
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properties:
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compatible:
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contains:
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enum:
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- microchip,mcp9984
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- microchip,mcp9984d
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then:
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properties:
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channel@4: false
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additionalProperties: false
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examples:
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- |
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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temperature-sensor@4c {
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compatible = "microchip,mcp9985";
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reg = <0x4c>;
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#address-cells = <1>;
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#size-cells = <0>;
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microchip,enable-anti-parallel;
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microchip,parasitic-res-on-channel1-2;
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microchip,parasitic-res-on-channel3-4;
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vdd-supply = <&vdd>;
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channel@1 {
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reg = <1>;
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label = "Room Temperature";
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};
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channel@2 {
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reg = <2>;
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label = "GPU Temperature";
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};
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};
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};
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...
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@@ -17358,6 +17358,12 @@ S: Maintained
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F: Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml
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F: drivers/iio/adc/mcp3911.c
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MICROCHIP MCP9982 TEMPERATURE DRIVER
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M: Victor Duicu <victor.duicu@microchip.com>
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L: linux-hwmon@vger.kernel.org
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S: Supported
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F: Documentation/devicetree/bindings/hwmon/microchip,mcp9982.yaml
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MICROCHIP MMC/SD/SDIO MCI DRIVER
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M: Aubin Constans <aubin.constans@microchip.com>
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S: Maintained
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