Kernel-4.18.0-80.el8_rockchip-thermal

• Temperature Sensor ADC (TSADC) on rockchip SoCs

Required properties:

• compatible : should be “rockchip,-tsadc”
  “rockchip,rv1108-tsadc”: found on RV1108 SoCs
  “rockchip,rk3228-tsadc”: found on RK3228 SoCs
  “rockchip,rk3288-tsadc”: found on RK3288 SoCs
  “rockchip,rk3328-tsadc”: found on RK3328 SoCs
  “rockchip,rk3368-tsadc”: found on RK3368 SoCs
  “rockchip,rk3399-tsadc”: found on RK3399 SoCs
• reg : physical base address of the controller and length of memory mapped
  region.
• interrupts : The interrupt number to the cpu. The interrupt specifier format

       depends on the interrupt controller.
  

• clocks : Must contain an entry for each entry in clock-names.
• clock-names : Shall be “tsadc” for the converter-clock, and “apb_pclk” for

    the peripheral clock.
  

• resets : Must contain an entry for each entry in reset-names.

   See ../reset/reset.txt for details.
  

• reset-names : Must include the name “tsadc-apb”.
• pinctrl-names : The pin control state names;
• pinctrl-0 : The “init” pinctrl state, it will be set before device probe.
• pinctrl-1 : The “default” pinctrl state, it will be set after reset the

      TSADC controller.
  

• pinctrl-2 : The “sleep” pinctrl state, it will be in for suspend.
• #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description.

Optional properties:

• rockchip,hw-tshut-temp : The hardware-controlled shutdown temperature value.
• rockchip,hw-tshut-mode : The hardware-controlled shutdown mode 0:CRU 1:GPIO.
• rockchip,hw-tshut-polarity : The hardware-controlled active polarity 0:LOW

               1:HIGH.
  

• rockchip,grf : The phandle of the syscon node for the general register file.

Exiample:
tsadc: tsadc@ff280000 {
compatible = “rockchip,rk3288-tsadc”;
reg = <0xff280000 0x100>;
interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cru SCLK_TSADC>, <&cru PCLK_TSADC>;
clock-names = “tsadc”, “apb_pclk”;
resets = <&cru SRST_TSADC>;
reset-names = “tsadc-apb”;
pinctrl-names = “init”, “default”, “sleep”;
pinctrl-0 = <&otp_gpio>;
pinctrl-1 = <&otp_out>;
pinctrl-2 = <&otp_gpio>;
#thermal-sensor-cells = <1>;
rockchip,hw-tshut-temp = <95000>;
rockchip,hw-tshut-mode = <0>;
rockchip,hw-tshut-polarity = <0>;
};

Example: referring to thermal sensors:
thermal-zones {
cpu_thermal: cpu_thermal {
polling-delay-passive = <1000>; /* milliseconds /
polling-delay = <5000>; / milliseconds */

    /* sensor    ID */
    thermal-sensors = <&tsadc    1>;

    trips {
        cpu_alert0: cpu_alert {
            temperature = <70000>; /* millicelsius */
            hysteresis = <2000>; /* millicelsius */
            type = "passive";
        };
        cpu_crit: cpu_crit {
            temperature = <90000>; /* millicelsius */
            hysteresis = <2000>; /* millicelsius */
            type = "critical";
        };
    };

    cooling-maps {
        map0 {
            trip = <&cpu_alert0>;
            cooling-device =
                <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
        };
    };
};

};