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ecaa015c7a
"rockchip,hw-tshut-temp", "rockchip,hw-tshut-mode" and "rockchip,hw-tshut-polarity" are not a required properties actually as the code could also work by loading the default settings there. So it is apprently misleading, although we prefer to get these from DT. And it seems we miss the 'rockchip,grf' here which should also be an optional property. Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
83 lines
2.7 KiB
Plaintext
83 lines
2.7 KiB
Plaintext
* Temperature Sensor ADC (TSADC) on rockchip SoCs
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Required properties:
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- compatible : should be "rockchip,<name>-tsadc"
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"rockchip,rk3228-tsadc": found on RK3228 SoCs
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"rockchip,rk3288-tsadc": found on RK3288 SoCs
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"rockchip,rk3368-tsadc": found on RK3368 SoCs
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"rockchip,rk3399-tsadc": found on RK3399 SoCs
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- reg : physical base address of the controller and length of memory mapped
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region.
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- interrupts : The interrupt number to the cpu. The interrupt specifier format
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depends on the interrupt controller.
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- clocks : Must contain an entry for each entry in clock-names.
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- clock-names : Shall be "tsadc" for the converter-clock, and "apb_pclk" for
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the peripheral clock.
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- resets : Must contain an entry for each entry in reset-names.
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See ../reset/reset.txt for details.
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- reset-names : Must include the name "tsadc-apb".
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- pinctrl-names : The pin control state names;
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- pinctrl-0 : The "init" pinctrl state, it will be set before device probe.
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- pinctrl-1 : The "default" pinctrl state, it will be set after reset the
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TSADC controller.
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- pinctrl-2 : The "sleep" pinctrl state, it will be in for suspend.
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- #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description.
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Optional properties:
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- rockchip,hw-tshut-temp : The hardware-controlled shutdown temperature value.
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- rockchip,hw-tshut-mode : The hardware-controlled shutdown mode 0:CRU 1:GPIO.
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- rockchip,hw-tshut-polarity : The hardware-controlled active polarity 0:LOW
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1:HIGH.
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- rockchip,grf : The phandle of the syscon node for the general register file.
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Exiample:
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tsadc: tsadc@ff280000 {
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compatible = "rockchip,rk3288-tsadc";
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reg = <0xff280000 0x100>;
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interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&cru SCLK_TSADC>, <&cru PCLK_TSADC>;
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clock-names = "tsadc", "apb_pclk";
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resets = <&cru SRST_TSADC>;
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reset-names = "tsadc-apb";
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pinctrl-names = "init", "default", "sleep";
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pinctrl-0 = <&otp_gpio>;
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pinctrl-1 = <&otp_out>;
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pinctrl-2 = <&otp_gpio>;
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#thermal-sensor-cells = <1>;
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rockchip,hw-tshut-temp = <95000>;
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rockchip,hw-tshut-mode = <0>;
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rockchip,hw-tshut-polarity = <0>;
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};
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Example: referring to thermal sensors:
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thermal-zones {
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cpu_thermal: cpu_thermal {
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polling-delay-passive = <1000>; /* milliseconds */
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polling-delay = <5000>; /* milliseconds */
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/* sensor ID */
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thermal-sensors = <&tsadc 1>;
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trips {
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cpu_alert0: cpu_alert {
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temperature = <70000>; /* millicelsius */
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hysteresis = <2000>; /* millicelsius */
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type = "passive";
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};
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cpu_crit: cpu_crit {
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temperature = <90000>; /* millicelsius */
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hysteresis = <2000>; /* millicelsius */
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type = "critical";
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};
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};
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cooling-maps {
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map0 {
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trip = <&cpu_alert0>;
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cooling-device =
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<&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
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};
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};
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};
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};
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