| * Temperature Sensor ADC (TSADC) on rockchip SoCs |
| |
| Required properties: |
| - compatible : should be "rockchip,<name>-tsadc" |
| "rockchip,px30-tsadc": found on PX30 SoCs |
| "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>; |
| }; |
| }; |
| }; |
| }; |