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authorEric Tremblay <etremblay@distech-controls.com>2019-11-12 17:30:00 -0500
committerGuenter Roeck <linux@roeck-us.net>2019-11-21 21:25:46 -0800
commit17fe2983e872810051934464ec5bcab80b714e65 (patch)
tree155629461888ed1206c9a63eecc994c094931209
parent61412ef12a8450e0a8e64d9f30eca5fb07d19996 (diff)
downloadlinux-17fe2983e872810051934464ec5bcab80b714e65.tar.bz2
dt-bindings: hwmon: Add TMP512/513
Document the TMP513/512 device devicetree bindings Signed-off-by: Eric Tremblay <etremblay@distech-controls.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20191112223001.20844-2-etremblay@distech-controls.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/hwmon/ti,tmp513.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TMP513/512 system monitor sensor
+
+maintainers:
+ - Eric Tremblay <etremblay@distech-controls.com>
+
+description: |
+ The TMP512 (dual-channel) and TMP513 (triple-channel) are system monitors
+ that include remote sensors, a local temperature sensor, and a high-side
+ current shunt monitor. These system monitors have the capability of measuring
+ remote temperatures, on-chip temperatures, and system voltage/power/current
+ consumption.
+
+ Datasheets:
+ http://www.ti.com/lit/gpn/tmp513
+ http://www.ti.com/lit/gpn/tmp512
+
+
+properties:
+ compatible:
+ enum:
+ - ti,tmp512
+ - ti,tmp513
+
+ reg:
+ maxItems: 1
+
+ shunt-resistor-micro-ohms:
+ description: |
+ If 0, the calibration process will be skiped and the current and power
+ measurement engine will not work. Temperature and voltage measurement
+ will continue to work. The shunt value also need to respect:
+ rshunt <= pga-gain * 40 * 1000 * 1000.
+ If not, it's not possible to compute a valid calibration value.
+ default: 1000
+
+ ti,pga-gain:
+ description: |
+ The gain value for the PGA function. This is 8, 4, 2 or 1.
+ The PGA gain affect the shunt voltage range.
+ The range will be equal to: pga-gain * 40mV
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [1, 2, 4, 8]
+ default: 8
+
+ ti,bus-range-microvolt:
+ description: |
+ This is the operating range of the bus voltage in microvolt
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [16000000, 32000000]
+ default: 32000000
+
+ ti,nfactor:
+ description: |
+ Array of three(TMP513) or two(TMP512) n-Factor value for each remote
+ temperature channel.
+ See datasheet Table 11 for n-Factor range list and value interpretation.
+ allOf:
+ - $ref: /schemas/types.yaml#definitions/uint32-array
+ - minItems: 2
+ maxItems: 3
+ items:
+ default: 0x00
+ minimum: 0x00
+ maximum: 0xFF
+
+required:
+ - compatible
+ - reg
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ tmp513@5c {
+ compatible = "ti,tmp513";
+ reg = <0x5C>;
+ shunt-resistor-micro-ohms = <330000>;
+ ti,bus-range-microvolt = <32000000>;
+ ti,pga-gain = <8>;
+ ti,nfactor = <0x1 0xF3 0x00>;
+ };
+ };