46 lines
1.8 KiB
Plaintext
46 lines
1.8 KiB
Plaintext
|
* 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";
|
||
|
|
};
|