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 and length of the controller's
  10                    registers.
  11 - interrupts:      PMIC temperature alarm interrupt.
  12 - #thermal-sensor-cells: Should be 0. See thermal.txt for a description.
  13
  14 Optional properties:
  15 - io-channels:     Should contain IIO channel specifier for the ADC channel,
  16                    which report chip die temperature.
  17 - io-channel-names: Should contain "thermal".
  18
  19 Example:
  20
  21         pm8941_temp: thermal-alarm@2400 {
  22                 compatible = "qcom,spmi-temp-alarm";
  23                 reg = <0x2400 0x100>;
  24                 interrupts = <0 0x24 0 IRQ_TYPE_EDGE_RISING>;
  25                 #thermal-sensor-cells = <0>;
  26
  27                 io-channels = <&pm8941_vadc VADC_DIE_TEMP>;
  28                 io-channel-names = "thermal";
  29         };
  30
  31         thermal-zones {
  32                 pm8941 {
  33                         polling-delay-passive = <250>;
  34                         polling-delay = <1000>;
  35
  36                         thermal-sensors = <&pm8941_temp>;
  37
  38                         trips {
  39                                 passive {
  40                                         temperature = <1050000>;
  41                                         hysteresis = <2000>;
  42                                         type = "passive";
  43                                 };
  44                                 alert {
  45                                         temperature = <125000>;
  46                                         hysteresis = <2000>;
  47                                         type = "hot";
  48                                 };
  49                                 crit {
  50                                         temperature = <145000>;
  51                                         hysteresis = <2000>;
  52                                         type = "critical";
  53                                 };
  54                         };
  55                 };
  56         };
  57