On 3/1/26 4:57 AM, Alexey Klimov wrote:
> On Mon Jan 19, 2026 at 12:08 PM GMT, Tudor Ambarus wrote:
>> Add support for the Thermal Management Unit (TMU) on the Google GS101
>> SoC.
>>
>> The GS101 TMU implementation utilizes a hybrid architecture where
>> management is shared between the kernel and the Alive Clock and
>> Power Manager (ACPM) firmware.
>
> [..]
>
>> Sensor Mapping (One-to-Many)
>> ============================
>>
>> The SoC contains multiple physical temperature sensors, but the ACPM
>> firmware abstracts these into logical groups (Clusters) for reporting:
>>
>> - ACPM Sensor 0 (Big Cluster): Aggregates physical sensors 0, 6, 7, 8, 9.
>> - ACPM Sensor 1 (Mid Cluster): Aggregates physical sensors 4, 5.
>> - ACPM Sensor 2 (Little Cluster): Aggregates physical sensors 1, 2.
>
> What about other non-CPU devices? Are there no sensors or implementation
> currently doesn't support them?
The implementation currently doesn't support them. On GS101 other sensors
are for GPU, ISP, TPU, and AUR.
>
> Is this implementation and ACPM TMU support exclusive only to GS101 SoC?
no, it can be extended for other Samsung SoCs.
> IIRC, mapping could be different for other SoCs and, for instance, last
> sensors could be non-CPU devices.
right.
Cheers,
ta
