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