66 lines
1.6 KiB
Plaintext
66 lines
1.6 KiB
Plaintext
|
* UniPhier Thermal bindings
|
||
|
|
|
||
|
|
This describes the devicetree bindings for thermal monitor supported by
|
||
|
|
PVT(Process, Voltage and Temperature) monitoring unit implemented on Socionext
|
||
|
|
UniPhier SoCs.
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
- compatible :
|
||
|
|
- "socionext,uniphier-pxs2-thermal" : For UniPhier PXs2 SoC
|
||
|
|
- "socionext,uniphier-ld20-thermal" : For UniPhier LD20 SoC
|
||
|
|
- "socionext,uniphier-pxs3-thermal" : For UniPhier PXs3 SoC
|
||
|
|
- interrupts : IRQ for the temperature alarm
|
||
|
|
- #thermal-sensor-cells : Should be 0. See ./thermal.txt for details.
|
||
|
|
|
||
|
|
Optional properties:
|
||
|
|
- socionext,tmod-calibration: A pair of calibrated values referred from PVT,
|
||
|
|
in case that the values aren't set on SoC,
|
||
|
|
like a reference board.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
|
||
|
|
sysctrl@61840000 {
|
||
|
|
compatible = "socionext,uniphier-ld20-sysctrl",
|
||
|
|
"simple-mfd", "syscon";
|
||
|
|
reg = <0x61840000 0x10000>;
|
||
|
|
...
|
||
|
|
pvtctl: pvtctl {
|
||
|
|
compatible = "socionext,uniphier-ld20-thermal";
|
||
|
|
interrupts = <0 3 1>;
|
||
|
|
#thermal-sensor-cells = <0>;
|
||
|
|
};
|
||
|
|
...
|
||
|
|
};
|
||
|
|
|
||
|
|
thermal-zones {
|
||
|
|
cpu_thermal {
|
||
|
|
polling-delay-passive = <250>; /* 250ms */
|
||
|
|
polling-delay = <1000>; /* 1000ms */
|
||
|
|
thermal-sensors = <&pvtctl>;
|
||
|
|
|
||
|
|
trips {
|
||
|
|
cpu_crit: cpu_crit {
|
||
|
|
temperature = <110000>; /* 110C */
|
||
|
|
hysteresis = <2000>;
|
||
|
|
type = "critical";
|
||
|
|
};
|
||
|
|
cpu_alert: cpu_alert {
|
||
|
|
temperature = <100000>; /* 100C */
|
||
|
|
hysteresis = <2000>;
|
||
|
|
type = "passive";
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
cooling-maps {
|
||
|
|
map0 {
|
||
|
|
trip = <&cpu_alert>;
|
||
|
|
cooling-device = <&cpu0 (-1) (-1)>;
|
||
|
|
};
|
||
|
|
map1 {
|
||
|
|
trip = <&cpu_alert>;
|
||
|
|
cooling-device = <&cpu2 (-1) (-1)>;
|
||
|
|
};
|
||
|
|
};
|
||
|
|
};
|
||
|
|
};
|