summaryrefslogtreecommitdiffstats
path: root/kernel/Documentation/devicetree/bindings/hwmon
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/Documentation/devicetree/bindings/hwmon')
-rw-r--r--kernel/Documentation/devicetree/bindings/hwmon/ina2xx.txt23
-rw-r--r--kernel/Documentation/devicetree/bindings/hwmon/lm70.txt21
-rw-r--r--kernel/Documentation/devicetree/bindings/hwmon/ltc2978.txt12
-rw-r--r--kernel/Documentation/devicetree/bindings/hwmon/max6697.txt64
-rw-r--r--kernel/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt1
-rw-r--r--kernel/Documentation/devicetree/bindings/hwmon/pwm-fan.txt29
6 files changed, 145 insertions, 5 deletions
diff --git a/kernel/Documentation/devicetree/bindings/hwmon/ina2xx.txt b/kernel/Documentation/devicetree/bindings/hwmon/ina2xx.txt
new file mode 100644
index 000000000..9bcd5e878
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/hwmon/ina2xx.txt
@@ -0,0 +1,23 @@
+ina2xx properties
+
+Required properties:
+- compatible: Must be one of the following:
+ - "ti,ina209" for ina209
+ - "ti,ina219" for ina219
+ - "ti,ina220" for ina220
+ - "ti,ina226" for ina226
+ - "ti,ina230" for ina230
+- reg: I2C address
+
+Optional properties:
+
+- shunt-resistor
+ Shunt resistor value in micro-Ohm
+
+Example:
+
+ina220@44 {
+ compatible = "ti,ina220";
+ reg = <0x44>;
+ shunt-resistor = <1000>;
+};
diff --git a/kernel/Documentation/devicetree/bindings/hwmon/lm70.txt b/kernel/Documentation/devicetree/bindings/hwmon/lm70.txt
new file mode 100644
index 000000000..e7fd921aa
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/hwmon/lm70.txt
@@ -0,0 +1,21 @@
+* LM70/TMP121/LM71/LM74 thermometer.
+
+Required properties:
+- compatible: one of
+ "ti,lm70"
+ "ti,tmp121"
+ "ti,lm71"
+ "ti,lm74"
+
+See Documentation/devicetree/bindings/spi/spi-bus.txt for more required and
+optional properties.
+
+Example:
+
+spi_master {
+ temperature-sensor@0 {
+ compatible = "ti,lm70";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ };
+};
diff --git a/kernel/Documentation/devicetree/bindings/hwmon/ltc2978.txt b/kernel/Documentation/devicetree/bindings/hwmon/ltc2978.txt
index ed2f09dc2..a7afbf60b 100644
--- a/kernel/Documentation/devicetree/bindings/hwmon/ltc2978.txt
+++ b/kernel/Documentation/devicetree/bindings/hwmon/ltc2978.txt
@@ -3,10 +3,16 @@ ltc2978
Required properties:
- compatible: should contain one of:
* "lltc,ltc2974"
+ * "lltc,ltc2975"
* "lltc,ltc2977"
* "lltc,ltc2978"
+ * "lltc,ltc2980"
* "lltc,ltc3880"
+ * "lltc,ltc3882"
* "lltc,ltc3883"
+ * "lltc,ltc3886"
+ * "lltc,ltc3887"
+ * "lltc,ltm2987"
* "lltc,ltm4676"
- reg: I2C slave address
@@ -17,10 +23,10 @@ Optional properties:
standard binding for regulators; see regulator.txt.
Valid names of regulators depend on number of supplies supported per device:
- * ltc2974 : vout0 - vout3
- * ltc2977 : vout0 - vout7
+ * ltc2974, ltc2975 : vout0 - vout3
+ * ltc2977, ltc2980, ltm2987 : vout0 - vout7
* ltc2978 : vout0 - vout7
- * ltc3880 : vout0 - vout1
+ * ltc3880, ltc3882, ltc3886 : vout0 - vout1
* ltc3883 : vout0
* ltm4676 : vout0 - vout1
diff --git a/kernel/Documentation/devicetree/bindings/hwmon/max6697.txt b/kernel/Documentation/devicetree/bindings/hwmon/max6697.txt
new file mode 100644
index 000000000..5f793998e
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/hwmon/max6697.txt
@@ -0,0 +1,64 @@
+max6697 properties
+
+Required properties:
+- compatible:
+ Should be one of
+ maxim,max6581
+ maxim,max6602
+ maxim,max6622
+ maxim,max6636
+ maxim,max6689
+ maxim,max6693
+ maxim,max6694
+ maxim,max6697
+ maxim,max6698
+ maxim,max6699
+- reg: I2C address
+
+Optional properties:
+
+- smbus-timeout-disable
+ Set to disable SMBus timeout. If not specified, SMBus timeout will be
+ enabled.
+- extended-range-enable
+ Only valid for MAX6581. Set to enable extended temperature range.
+ Extended temperature will be disabled if not specified.
+- beta-compensation-enable
+ Only valid for MAX6693 and MX6694. Set to enable beta compensation on
+ remote temperature channel 1.
+ Beta compensation will be disabled if not specified.
+- alert-mask
+ Alert bit mask. Alert disabled for bits set.
+ Select bit 0 for local temperature, bit 1..7 for remote temperatures.
+ If not specified, alert will be enabled for all channels.
+- over-temperature-mask
+ Over-temperature bit mask. Over-temperature reporting disabled for
+ bits set.
+ Select bit 0 for local temperature, bit 1..7 for remote temperatures.
+ If not specified, over-temperature reporting will be enabled for all
+ channels.
+- resistance-cancellation
+ Boolean for all chips other than MAX6581. Set to enable resistance
+ cancellation on remote temperature channel 1.
+ For MAX6581, resistance cancellation enabled for all channels if
+ specified as boolean, otherwise as per bit mask specified.
+ Only supported for remote temperatures (bit 1..7).
+ If not specified, resistance cancellation will be disabled for all
+ channels.
+- transistor-ideality
+ For MAX6581 only. Two values; first is bit mask, second is ideality
+ select value as per MAX6581 data sheet. Select bit 1..7 for remote
+ channels.
+ Transistor ideality will be initialized to default (1.008) if not
+ specified.
+
+Example:
+
+temp-sensor@1a {
+ compatible = "maxim,max6697";
+ reg = <0x1a>;
+ smbus-timeout-disable;
+ resistance-cancellation;
+ alert-mask = <0x72>;
+ over-temperature-mask = <0x7f>;
+};
diff --git a/kernel/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt b/kernel/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
index fcca8e744..a04a80f9c 100644
--- a/kernel/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
+++ b/kernel/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
@@ -9,6 +9,7 @@ Requires node properties:
"murata,ncp21wb473"
"murata,ncp03wb473"
"murata,ncp15wl333"
+ "murata,ncp03wf104"
/* Usage of vendor name "ntc" is deprecated */
<DEPRECATED> "ntc,ncp15wb473"
diff --git a/kernel/Documentation/devicetree/bindings/hwmon/pwm-fan.txt b/kernel/Documentation/devicetree/bindings/hwmon/pwm-fan.txt
index 610757ce4..c6d533202 100644
--- a/kernel/Documentation/devicetree/bindings/hwmon/pwm-fan.txt
+++ b/kernel/Documentation/devicetree/bindings/hwmon/pwm-fan.txt
@@ -3,10 +3,35 @@ Bindings for a fan connected to the PWM lines
Required properties:
- compatible : "pwm-fan"
- pwms : the PWM that is used to control the PWM fan
+- cooling-levels : PWM duty cycle values in a range from 0 to 255
+ which correspond to thermal cooling states
Example:
- pwm-fan {
+ fan0: pwm-fan {
compatible = "pwm-fan";
- status = "okay";
+ cooling-min-state = <0>;
+ cooling-max-state = <3>;
+ #cooling-cells = <2>;
pwms = <&pwm 0 10000 0>;
+ cooling-levels = <0 102 170 230>;
};
+
+ thermal-zones {
+ cpu_thermal: cpu-thermal {
+ thermal-sensors = <&tmu 0>;
+ polling-delay-passive = <0>;
+ polling-delay = <0>;
+ trips {
+ cpu_alert1: cpu-alert1 {
+ temperature = <100000>; /* millicelsius */
+ hysteresis = <2000>; /* millicelsius */
+ type = "passive";
+ };
+ };
+ cooling-maps {
+ map0 {
+ trip = <&cpu_alert1>;
+ cooling-device = <&fan0 0 1>;
+ };
+ };
+ };