mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
c610afaa21
Add support for the temperature alarm peripheral found inside Qualcomm plug-and-play (QPNP) PMIC chips. The temperature alarm peripheral outputs a pulse on an interrupt line whenever the thermal over temperature stage value changes. Register a thermal sensor. The temperature reported by this thermal sensor device should reflect the actual PMIC die temperature if an ADC is present on the given PMIC. If no ADC is present, then the reported temperature should be estimated from the over temperature stage value. Cc: David Collins <collinsd@codeaurora.org> Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
58 lines
1.5 KiB
Plaintext
58 lines
1.5 KiB
Plaintext
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";
|
|
};
|
|
};
|
|
};
|
|
};
|
|
|