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Diffstat (limited to 'Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt b/Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt new file mode 100644 index 000000000..2d5b2ad03 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt @@ -0,0 +1,51 @@ +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. +- interrupts: PMIC temperature alarm interrupt. +- #thermal-sensor-cells: Should be 0. See Documentation/devicetree/bindings/thermal/thermal-sensor.yaml 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>; + 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 { + stage1 { + temperature = <105000>; + hysteresis = <2000>; + type = "passive"; + }; + stage2 { + temperature = <125000>; + hysteresis = <2000>; + type = "critical"; + }; + }; + }; + }; + |