Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt

   1 Qualcomm QPNP PMIC Temperature Alarm
   2
   3 QPNP temperature alarm peripherals are found inside of Qualcomm PMIC chips
   4 that utilize the Qualcomm SPMI implementation. These peripherals provide an
   5 interrupt signal and status register to identify high PMIC die temperature.
   6
   7 Required properties:
   8 - compatible:      Should contain "qcom,spmi-temp-alarm".
   9 - reg:             Specifies the SPMI address.
  10 - interrupts:      PMIC temperature alarm interrupt.
  11 - #thermal-sensor-cells: Should be 0. See Documentation/devicetree/bindings/thermal/thermal-sensor.yaml for a description.
  12
  13 Optional properties:
  14 - io-channels:     Should contain IIO channel specifier for the ADC channel,
  15                    which report chip die temperature.
  16 - io-channel-names: Should contain "thermal".
  17
  18 Example:
  19
  20         pm8941_temp: thermal-alarm@2400 {
  21                 compatible = "qcom,spmi-temp-alarm";
  22                 reg = <0x2400>;
  23                 interrupts = <0 0x24 0 IRQ_TYPE_EDGE_RISING>;
  24                 #thermal-sensor-cells = <0>;
  25
  26                 io-channels = <&pm8941_vadc VADC_DIE_TEMP>;
  27                 io-channel-names = "thermal";
  28         };
  29
  30         thermal-zones {
  31                 pm8941 {
  32                         polling-delay-passive = <250>;
  33                         polling-delay = <1000>;
  34
  35                         thermal-sensors = <&pm8941_temp>;
  36
  37                         trips {
  38                                 stage1 {
  39                                         temperature = <105000>;
  40                                         hysteresis = <2000>;
  41                                         type = "passive";
  42                                 };
  43                                 stage2 {
  44                                         temperature = <125000>;
  45                                         hysteresis = <2000>;
  46                                         type = "critical";
  47                                 };
  48                         };
  49                 };
  50         };
  51