| * Mediatek Thermal |
| |
| This describes the device tree binding for the Mediatek thermal controller |
| which measures the on-SoC temperatures. This device does not have its own ADC, |
| instead it directly controls the AUXADC via AHB bus accesses. For this reason |
| this device needs phandles to the AUXADC. Also it controls a mux in the |
| apmixedsys register space via AHB bus accesses, so a phandle to the APMIXEDSYS |
| is also needed. |
| |
| Required properties: |
| - compatible: |
| - "mediatek,mt8173-thermal" : For MT8173 family of SoCs |
| - "mediatek,mt2701-thermal" : For MT2701 family of SoCs |
| - reg: Address range of the thermal controller |
| - interrupts: IRQ for the thermal controller |
| - clocks, clock-names: Clocks needed for the thermal controller. required |
| clocks are: |
| "therm": Main clock needed for register access |
| "auxadc": The AUXADC clock |
| - resets: Reference to the reset controller controlling the thermal controller. |
| - mediatek,auxadc: A phandle to the AUXADC which the thermal controller uses |
| - mediatek,apmixedsys: A phandle to the APMIXEDSYS controller. |
| - #thermal-sensor-cells : Should be 0. See ./thermal.txt for a description. |
| |
| Optional properties: |
| - nvmem-cells: A phandle to the calibration data provided by a nvmem device. If |
| unspecified default values shall be used. |
| - nvmem-cell-names: Should be "calibration-data" |
| |
| Example: |
| |
| thermal: thermal@1100b000 { |
| #thermal-sensor-cells = <1>; |
| compatible = "mediatek,mt8173-thermal"; |
| reg = <0 0x1100b000 0 0x1000>; |
| interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>; |
| clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>; |
| clock-names = "therm", "auxadc"; |
| resets = <&pericfg MT8173_PERI_THERM_SW_RST>; |
| reset-names = "therm"; |
| mediatek,auxadc = <&auxadc>; |
| mediatek,apmixedsys = <&apmixedsys>; |
| nvmem-cells = <&thermal_calibration_data>; |
| nvmem-cell-names = "calibration-data"; |
| }; |