| Simon Glass | 344c837 | 2015-08-30 16:55:20 -0600 | [diff] [blame] | 1 | * Temperature Sensor ADC (TSADC) on rockchip SoCs |
| 2 | |
| 3 | Required properties: |
| 4 | - compatible : "rockchip,rk3288-tsadc" |
| 5 | - reg : physical base address of the controller and length of memory mapped |
| 6 | region. |
| 7 | - interrupts : The interrupt number to the cpu. The interrupt specifier format |
| 8 | depends on the interrupt controller. |
| 9 | - clocks : Must contain an entry for each entry in clock-names. |
| 10 | - clock-names : Shall be "tsadc" for the converter-clock, and "apb_pclk" for |
| 11 | the peripheral clock. |
| 12 | - resets : Must contain an entry for each entry in reset-names. |
| 13 | See ../reset/reset.txt for details. |
| 14 | - reset-names : Must include the name "tsadc-apb". |
| 15 | - #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description. |
| 16 | - rockchip,hw-tshut-temp : The hardware-controlled shutdown temperature value. |
| 17 | - rockchip,hw-tshut-mode : The hardware-controlled shutdown mode 0:CRU 1:GPIO. |
| 18 | - rockchip,hw-tshut-polarity : The hardware-controlled active polarity 0:LOW |
| 19 | 1:HIGH. |
| 20 | |
| 21 | Exiample: |
| 22 | tsadc: tsadc@ff280000 { |
| 23 | compatible = "rockchip,rk3288-tsadc"; |
| 24 | reg = <0xff280000 0x100>; |
| 25 | interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>; |
| 26 | clocks = <&cru SCLK_TSADC>, <&cru PCLK_TSADC>; |
| 27 | clock-names = "tsadc", "apb_pclk"; |
| 28 | resets = <&cru SRST_TSADC>; |
| 29 | reset-names = "tsadc-apb"; |
| 30 | pinctrl-names = "default"; |
| 31 | pinctrl-0 = <&otp_out>; |
| 32 | #thermal-sensor-cells = <1>; |
| 33 | rockchip,hw-tshut-temp = <95000>; |
| 34 | rockchip,hw-tshut-mode = <0>; |
| 35 | rockchip,hw-tshut-polarity = <0>; |
| 36 | }; |
| 37 | |
| 38 | Example: referring to thermal sensors: |
| 39 | thermal-zones { |
| 40 | cpu_thermal: cpu_thermal { |
| 41 | polling-delay-passive = <1000>; /* milliseconds */ |
| 42 | polling-delay = <5000>; /* milliseconds */ |
| 43 | |
| 44 | /* sensor ID */ |
| 45 | thermal-sensors = <&tsadc 1>; |
| 46 | |
| 47 | trips { |
| 48 | cpu_alert0: cpu_alert { |
| 49 | temperature = <70000>; /* millicelsius */ |
| 50 | hysteresis = <2000>; /* millicelsius */ |
| 51 | type = "passive"; |
| 52 | }; |
| 53 | cpu_crit: cpu_crit { |
| 54 | temperature = <90000>; /* millicelsius */ |
| 55 | hysteresis = <2000>; /* millicelsius */ |
| 56 | type = "critical"; |
| 57 | }; |
| 58 | }; |
| 59 | |
| 60 | cooling-maps { |
| 61 | map0 { |
| 62 | trip = <&cpu_alert0>; |
| 63 | cooling-device = |
| 64 | <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; |
| 65 | }; |
| 66 | }; |
| 67 | }; |
| 68 | }; |