cff1d293bb
Now that we have yaml bindings for the thermal subsystem, get rid of the old bindings (thermal.txt). Replace all references to thermal.txt in the Documentation with a link to the appropriate YAML bindings using the following search and replace pattern: - If the reference is specific to the thermal-sensor-cells property, replace with a pointer to thermal-sensor.yaml - If the reference is to the cooling-cells property, replace with a pointer to thermal-cooling-devices.yaml - If the reference is generic thermal bindings, replace with a reference to thermal*.yaml. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/e9aacd33071a00568b67e110fa3bcc4d86d3e1e4.1595245166.git.amit.kucheria@linaro.org
86 lines
2.9 KiB
Plaintext
86 lines
2.9 KiB
Plaintext
* 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 Documentation/devicetree/bindings/thermal/thermal-sensor.yaml 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>;
|
|
};
|
|
};
|
|
};
|
|
};
|