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

[Daniel Lezcano]

On 7/27/26 16:22, Gaurav Kohli wrote:
> From: Dipa Ramesh Mantre <dipa.mantre@xxxxxxxxxxxxxxxx>
>
> 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@xxxxxxxxxxxxxxxx>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> Signed-off-by: Gaurav Kohli <gaurav.kohli@xxxxxxxxxxxxxxxx>
> ---
>   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:

	...

	required:
	  - temperature
	  - hysteresis
	  - type

	...