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arm64: dts: mt8183-kukui: Add tboard thermal zones 

Add tboard thermal zones.
The tboard thermal sensors are a kind of NTC sensors which are located
on PCB board to correlate the temperature of the case (Tskin).

pull-up voltage: 1800 mv
pull-up resistor: 75K

Vsense = pull-up voltage * Rntc / ( pull-up resistor + Rntc )
AuxIn = Vsense * 4096 / 1500

Signed-off-by: Michael Kao <michael.kao@mediatek.com>
Signed-off-by: Ben Tseng <ben.tseng@mediatek.com>
Tested-by: Hsin-Yi Wang <hsinyi@chromium.org>

Link: https://lore.kernel.org/r/20210604093755.13288-1-ben.tseng@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
This commit is contained in:
Michael Kao 2021-06-04 17:37:55 +08:00 committed by Matthias Brugger
parent 4fa8492d1e
commit 507b1b2812
2 changed files with 15 additions and 1 deletions
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14
arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
View File

@ -851,6 +851,20 @@
status = "okay";
};
&thermal_zones {
tboard1 {
polling-delay = <1000>; /* milliseconds */
polling-delay-passive = <0>; /* milliseconds */
thermal-sensors = <&tboard_thermistor1>;
};
tboard2 {
polling-delay = <1000>; /* milliseconds */
polling-delay-passive = <0>; /* milliseconds */
thermal-sensors = <&tboard_thermistor2>;
};
};
&u3phy {
status = "okay";
};

2
arch/arm64/boot/dts/mediatek/mt8183.dtsi
View File

@ -673,7 +673,7 @@
nvmem-cell-names = "calibration-data";
};
thermal-zones {
thermal_zones: thermal-zones {
cpu_thermal: cpu_thermal {
polling-delay-passive = <100>;
polling-delay = <500>;