| Qualcomm QPNP PMIC Temperature Alarm |
| |
| QPNP temperature alarm peripherals are found inside of Qualcomm PMIC chips |
| that utilize the Qualcomm SPMI implementation. These peripherals provide an |
| interrupt signal and status register to identify high PMIC die temperature. |
| |
| Required properties: |
| - compatible: Should contain "qcom,spmi-temp-alarm". |
| - reg: Specifies the SPMI address and length of the controller's |
| registers. |
| - interrupts: PMIC temperature alarm interrupt. |
| - #thermal-sensor-cells: Should be 0. See thermal.txt for a description. |
| |
| Optional properties: |
| - io-channels: Should contain IIO channel specifier for the ADC channel, |
| which report chip die temperature. |
| - io-channel-names: Should contain "thermal". |
| |
| Example: |
| |
| pm8941_temp: thermal-alarm@2400 { |
| compatible = "qcom,spmi-temp-alarm"; |
| reg = <0x2400 0x100>; |
| interrupts = <0 0x24 0 IRQ_TYPE_EDGE_RISING>; |
| #thermal-sensor-cells = <0>; |
| |
| io-channels = <&pm8941_vadc VADC_DIE_TEMP>; |
| io-channel-names = "thermal"; |
| }; |
| |
| thermal-zones { |
| pm8941 { |
| polling-delay-passive = <250>; |
| polling-delay = <1000>; |
| |
| thermal-sensors = <&pm8941_temp>; |
| |
| trips { |
| passive { |
| temperature = <1050000>; |
| hysteresis = <2000>; |
| type = "passive"; |
| }; |
| alert { |
| temperature = <125000>; |
| hysteresis = <2000>; |
| type = "hot"; |
| }; |
| crit { |
| temperature = <145000>; |
| hysteresis = <2000>; |
| type = "critical"; |
| }; |
| }; |
| }; |
| }; |
| |
