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dt-bindings: thermal: Snapshot of lmh cpu VDD driver document from msm-4.19

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Add a snapshot of limits cpu voltage cooling device driver document
from msm-4.19. This is snapshot as of 'commit <683e0411b258>
("dt-bindings: thermal: Add limits CPU voltage cooling device")'.

Change-Id: I2de821ec34d89e0c9d1702ebb322267f4c8ea943
This commit is contained in:
Manaf Meethalavalappu Pallikunhi 2021-05-04 13:26:59 +05:30
commit 32a6c9e5ae
1 changed files with 33 additions and 0 deletions
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bindings/thermal/qti-lmh-cpu-vdd-cdev.txt Normal file
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QTI LMH CPU Voltage cooling devices.
The LMH CPU voltage cooling device will be used to place voltage restriction
vote on CPU railway during cold thermal condition. This cooling device driver
will register one cooling device per LLM, which can be used by thermal zone to
place voltage restriction vote.
Properties:
- compatible:
Usage: required
Value type: <string>
Definition: should be "qcom,lmh-cpu-vdd"
Cooling device node:
- reg:
Usage: Required
Value type: <a b>
Definition: where 'a' is the starting register address of the LLM
and 'b' is the size of LLM address space.
- #cooling-cells:
Usage: required
Value type: <integer>
Definition: Must be 2. Needed for of_thermal as cooling device
identifier. Please refer to
<devicetree/bindings/thermal/thermal.txt> for more
details.
Example:
lmh_cpu_vdd0: qcom,lmh-cpu-vdd@18350800 {
compatible = "qcom,lmh-cpu-vdd";
reg = <0x18350800 0x1000>;
#cooling-cells = <2>;
};