Re: [PATCH v6 9/9] arm64: dts: qcom: hamoa: Enable CDSP cooling

[Gaurav Kohli <gaurav.kohli@oss.qualcomm.com>]

On 7/30/2026 10:40 PM, Daniel Lezcano wrote:
> On 7/27/26 16:22, Gaurav Kohli wrote:
>> From: Dipa Ramesh Mantre <dipa.mantre@oss.qualcomm.com>
>>
>> Unlike the CPU, the CDSP does not throttle its speed automatically
>> when it reaches high temperatures in hamoa.
>>
>> Set up CDSP cooling for both instances by throttling the cdsp, when
>> it reaches 95°C.
>>
>> Add polling-delay-passive so the governor periodically evaluates
>> the zone during passive cooling and steps up cooling levels when
>> temperature stabilizes below the next trip.
>>
>> Signed-off-by: Dipa Ramesh Mantre <dipa.mantre@oss.qualcomm.com>
>> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
>> Signed-off-by: Gaurav Kohli <gaurav.kohli@oss.qualcomm.com>
>> ---
>>   arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 32 +++++++++++++++
>>   arch/arm64/boot/dts/qcom/hamoa.dtsi        | 63 ++++++++++++++++++++ 
>> ++++++++++
>>   2 files changed, 95 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts b/arch/arm64/ 
>> boot/dts/qcom/hamoa-iot-evk.dts
>> index 9fa86bb6438e..a146be1cb5fb 100644
>> --- a/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts
>> +++ b/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts
>> @@ -1684,4 +1684,36 @@ trip-point0 {
>>               };
>>           };
>>       };
>> +
>> +    nsp0-thermal {
>> +        trips {
>> +            trip-point1 {
>> +                temperature = <105000>;
>> +            };
>> +        };
>> +    };
>> +
>> +    nsp1-thermal {
>> +        trips {
>> +            trip-point1 {
>> +                temperature = <105000>;
>> +            };
>> +        };
>> +    };
>> +
>> +    nsp2-thermal {
>> +        trips {
>> +            trip-point1 {
>> +                temperature = <105000>;
>> +            };
>> +        };
>> +    };
>> +
>> +    nsp3-thermal {
>> +        trips {
>> +            trip-point1 {
>> +                temperature = <105000>;
>> +            };
>> +        };
>> +    };
> 
>  From thermal-zones.yaml:

thanks for review, actually this is overwriting temperature with 105, so 
other properties are coming from hamoa.dtsi.

> 
>      ...
> 
>      required:
>        - temperature
>        - hysteresis
>        - type
> 
>      ...
> 
> 
>