Commit | Line | Data |
---|---|---|
025f272f SH |
1 | * Mediatek Thermal |
2 | ||
3 | This describes the device tree binding for the Mediatek thermal controller | |
4 | which measures the on-SoC temperatures. This device does not have its own ADC, | |
5 | instead it directly controls the AUXADC via AHB bus accesses. For this reason | |
6 | this device needs phandles to the AUXADC. Also it controls a mux in the | |
7 | apmixedsys register space via AHB bus accesses, so a phandle to the APMIXEDSYS | |
8 | is also needed. | |
9 | ||
10 | Required properties: | |
b715a341 | 11 | - compatible: |
12 | - "mediatek,mt8173-thermal" : For MT8173 family of SoCs | |
13 | - "mediatek,mt2701-thermal" : For MT2701 family of SoCs | |
025f272f SH |
14 | - reg: Address range of the thermal controller |
15 | - interrupts: IRQ for the thermal controller | |
16 | - clocks, clock-names: Clocks needed for the thermal controller. required | |
17 | clocks are: | |
18 | "therm": Main clock needed for register access | |
19 | "auxadc": The AUXADC clock | |
20 | - resets: Reference to the reset controller controlling the thermal controller. | |
21 | - mediatek,auxadc: A phandle to the AUXADC which the thermal controller uses | |
22 | - mediatek,apmixedsys: A phandle to the APMIXEDSYS controller. | |
23 | - #thermal-sensor-cells : Should be 0. See ./thermal.txt for a description. | |
24 | ||
25 | Optional properties: | |
26 | - nvmem-cells: A phandle to the calibration data provided by a nvmem device. If | |
27 | unspecified default values shall be used. | |
28 | - nvmem-cell-names: Should be "calibration-data" | |
29 | ||
30 | Example: | |
31 | ||
32 | thermal: thermal@1100b000 { | |
33 | #thermal-sensor-cells = <1>; | |
34 | compatible = "mediatek,mt8173-thermal"; | |
35 | reg = <0 0x1100b000 0 0x1000>; | |
36 | interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>; | |
37 | clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>; | |
38 | clock-names = "therm", "auxadc"; | |
39 | resets = <&pericfg MT8173_PERI_THERM_SW_RST>; | |
40 | reset-names = "therm"; | |
41 | mediatek,auxadc = <&auxadc>; | |
42 | mediatek,apmixedsys = <&apmixedsys>; | |
43 | nvmem-cells = <&thermal_calibration_data>; | |
44 | nvmem-cell-names = "calibration-data"; | |
45 | }; |