[PATCH v1 0/2] Enable TSENS and thermal zone for QCS615 SoC

[PATCH v1 0/2] Enable TSENS and thermal zone for QCS615 SoC

[Gaurav Kohli]

Adding compatible string in TSENS dt-bindings, device node
for TSENS controller and Thermal zone support.

Gaurav Kohli (2):
  dt-bindings: thermal: tsens: Add QCS615 compatible
  arm64: dts: qcom: Enable tsens and thermal for QCS615 SoC

 .../bindings/thermal/qcom-tsens.yaml          |   1 +
 arch/arm64/boot/dts/qcom/qcs615.dtsi          | 281 ++++++++++++++++++
 2 files changed, 282 insertions(+)

-- 
2.34.1

[PATCH v1 1/2] dt-bindings: thermal: tsens: Add QCS615 compatible

[Gaurav Kohli]

Add compatibility string for the thermal sensors on QCS615 platform.

Signed-off-by: Gaurav Kohli <quic_gkohli@quicinc.com>
---
 Documentation/devicetree/bindings/thermal/qcom-tsens.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml b/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
index f9d8012c8cf5..de9b667a79d3 100644
--- a/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
+++ b/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
@@ -52,6 +52,7 @@ properties:
               - qcom,msm8996-tsens
               - qcom,msm8998-tsens
               - qcom,qcm2290-tsens
+              - qcom,qcs615-tsens
               - qcom,sa8255p-tsens
               - qcom,sa8775p-tsens
               - qcom,sar2130p-tsens
-- 
2.34.1

Re: [PATCH v1 1/2] dt-bindings: thermal: tsens: Add QCS615 compatible

[Rob Herring (Arm)]

On Thu, 10 Apr 2025 19:30:18 +0530, Gaurav Kohli wrote:
> Add compatibility string for the thermal sensors on QCS615 platform.
> 
> Signed-off-by: Gaurav Kohli <quic_gkohli@quicinc.com>
> ---
>  Documentation/devicetree/bindings/thermal/qcom-tsens.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring (Arm) <robh@kernel.org>

[PATCH v1 2/2] arm64: dts: qcom: Enable TSENS support for QCS615 SoC

[Gaurav Kohli]

Add TSENS and thermal devicetree node for QCS615 SoC.

Signed-off-by: Gaurav Kohli <quic_gkohli@quicinc.com>
---
 arch/arm64/boot/dts/qcom/qcs615.dtsi | 281 +++++++++++++++++++++++++++
 1 file changed, 281 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi b/arch/arm64/boot/dts/qcom/qcs615.dtsi
index edfb796d8dd3..f0d8aed7da29 100644
--- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
@@ -3668,6 +3668,17 @@ usb_2_dwc3: usb@a800000 {
 				maximum-speed = "high-speed";
 			};
 		};
+
+		tsens0: tsens@c222000 {
+			compatible = "qcom,qcs615-tsens", "qcom,tsens-v2";
+			reg = <0x0 0xc263000 0x0 0x1ff>,
+				<0x0 0xc222000 0x0 0x8>;
+			interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>,
+					<GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>;
+			#qcom,sensors = <16>;
+			interrupt-names = "uplow", "critical";
+			#thermal-sensor-cells = <1>;
+		};
 	};
 
 	arch_timer: timer {
@@ -3677,4 +3688,274 @@ arch_timer: timer {
 			     <GIC_PPI 3 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
 			     <GIC_PPI 0 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
 	};
+
+	thermal-zones {
+		aoss-thermal {
+			thermal-sensors = <&tsens0 0>;
+
+			trips {
+
+				trip-point0 {
+					temperature = <110000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+		};
+
+		cpuss-0-thermal {
+			thermal-sensors = <&tsens0 1>;
+
+			trips {
+
+				trip-point0 {
+					temperature = <115000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				trip-point1 {
+					temperature = <118000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+
+		};
+
+		cpuss-1-thermal {
+			thermal-sensors = <&tsens0 2>;
+
+			trips {
+
+				trip-point0 {
+					temperature = <115000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				trip-point1 {
+					temperature = <118000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+
+		};
+
+		cpuss-2-thermal {
+			thermal-sensors = <&tsens0 3>;
+
+			trips {
+
+				trip-point0 {
+					temperature = <115000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				trip-point1 {
+					temperature = <118000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+		};
+
+		cpuss-3-thermal {
+			thermal-sensors = <&tsens0 4>;
+
+			trips {
+
+				trip-point0 {
+					temperature = <115000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				trip-point1 {
+					temperature = <118000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+		};
+
+		cpu-1-0-thermal {
+			thermal-sensors = <&tsens0 5>;
+
+			trips {
+
+				trip-point0 {
+					temperature = <115000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				trip-point1 {
+					temperature = <118000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+		};
+
+		cpu-1-1-thermal {
+			thermal-sensors = <&tsens0 6>;
+
+			trips {
+
+				trip-point0 {
+					temperature = <115000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				trip-point1 {
+					temperature = <118000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+
+		};
+
+		cpu-1-2-thermal {
+			thermal-sensors = <&tsens0 7>;
+
+			trips {
+
+				trip-point0 {
+					temperature = <115000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				trip-point1 {
+					temperature = <118000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+		};
+
+		cpu-1-3-thermal {
+			thermal-sensors = <&tsens0 8>;
+
+			trips {
+
+				trip-point0 {
+					temperature = <115000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				trip-point1 {
+					temperature = <118000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+
+		};
+
+		gpu-thermal {
+			thermal-sensors = <&tsens0 9>;
+
+			trips {
+
+				trip-point0 {
+					temperature = <105000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				trip-point1 {
+					temperature = <110000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+
+		};
+
+		q6-hvx-thermal {
+			thermal-sensors = <&tsens0 10>;
+
+			trips {
+
+				trip-point0 {
+					temperature = <105000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
+				trip-point1 {
+					temperature = <110000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+		};
+
+		mdm-core-thermal {
+			thermal-sensors = <&tsens0 11>;
+
+			trips {
+				trip-point0 {
+					temperature = <110000>;
+					hysteresis = <10000>;
+					type = "passive";
+				};
+			};
+		};
+
+		camera-thermal {
+			thermal-sensors = <&tsens0 12>;
+
+			trips {
+				trip-point0 {
+					temperature = <110000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+		};
+
+		wlan-thermal {
+			thermal-sensors = <&tsens0 13>;
+
+			trips {
+				trip-point0 {
+					temperature = <110000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+		};
+
+		display-thermal {
+			thermal-sensors = <&tsens0 14>;
+
+			trips {
+				trip-point0 {
+					temperature = <110000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+		};
+
+		video-thermal {
+			thermal-sensors = <&tsens0 15>;
+
+			trips {
+				trip-point0 {
+					temperature = <110000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+			};
+		};
+	};
 };
-- 
2.34.1

Re: [PATCH v1 2/2] arm64: dts: qcom: Enable TSENS support for QCS615 SoC

[Konrad Dybcio]

On 4/10/25 4:00 PM, Gaurav Kohli wrote:
> Add TSENS and thermal devicetree node for QCS615 SoC.
> 
> Signed-off-by: Gaurav Kohli <quic_gkohli@quicinc.com>
> ---

subject: "arm64: dts: qcom: qcs615: ..">  arch/arm64/boot/dts/qcom/qcs615.dtsi | 281 +++++++++++++++++++++++++++
>  1 file changed, 281 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi b/arch/arm64/boot/dts/qcom/qcs615.dtsi
> index edfb796d8dd3..f0d8aed7da29 100644
> --- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
> +++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
> @@ -3668,6 +3668,17 @@ usb_2_dwc3: usb@a800000 {
>  				maximum-speed = "high-speed";
>  			};
>  		};
> +
> +		tsens0: tsens@c222000 {
> +			compatible = "qcom,qcs615-tsens", "qcom,tsens-v2";
> +			reg = <0x0 0xc263000 0x0 0x1ff>,
> +				<0x0 0xc222000 0x0 0x8>;
Pad the address part to 8 hex digits with leading zeroes> +			interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>,

&pdc 26

> +					<GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>;

&pdc 28

Please align the <s

> +			#qcom,sensors = <16>;
> +			interrupt-names = "uplow", "critical";

it would make sense for interrupt-names to come right under interrupts
> +			#thermal-sensor-cells = <1>;
> +		};
>  	};
>  
>  	arch_timer: timer {
> @@ -3677,4 +3688,274 @@ arch_timer: timer {
>  			     <GIC_PPI 3 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
>  			     <GIC_PPI 0 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
>  	};
> +
> +	thermal-zones {
> +		aoss-thermal {
> +			thermal-sensors = <&tsens0 0>;
> +
> +			trips {
> +
> +				trip-point0 {
> +					temperature = <110000>;
> +					hysteresis = <5000>;
> +					type = "passive";
> +				};
> +			};
> +		};
> +
> +		cpuss-0-thermal {
> +			thermal-sensors = <&tsens0 1>;
> +
> +			trips {
> +
> +				trip-point0 {
> +					temperature = <115000>;
> +					hysteresis = <5000>;
> +					type = "passive";
> +				};
> +
> +				trip-point1 {
> +					temperature = <118000>;
> +					hysteresis = <5000>;
> +					type = "passive";
> +				};

Please drop the passive trip point for the *CPU* tzones, see

commit 06eadce936971dd11279e53b6dfb151804137836
("arm64: dts: qcom: x1e80100: Drop unused passive thermal trip points for CPU")

and add a single critical point instead, see

commit 03f2b8eed73418269a158ccebad5d8d8f2f6daa1
("arm64: dts: qcom: x1e80100: Apply consistent critical thermal shutdown")

Konrad

Re: [PATCH v1 2/2] arm64: dts: qcom: Enable TSENS support for QCS615 SoC

[Gaurav Kohli]

thanks for review!

On 4/12/2025 5:13 AM, Konrad Dybcio wrote:
> On 4/10/25 4:00 PM, Gaurav Kohli wrote:
>> Add TSENS and thermal devicetree node for QCS615 SoC.
>>
>> Signed-off-by: Gaurav Kohli <quic_gkohli@quicinc.com>
>> ---
> 
> subject: "arm64: dts: qcom: qcs615: ..">  arch/arm64/boot/dts/qcom/qcs615.dtsi | 281 +++++++++++++++++++++++++++
>>   1 file changed, 281 insertions(+)
>>
will fix this.
>> diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>> index edfb796d8dd3..f0d8aed7da29 100644
>> --- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>> @@ -3668,6 +3668,17 @@ usb_2_dwc3: usb@a800000 {
>>   				maximum-speed = "high-speed";
>>   			};
>>   		};
>> +
>> +		tsens0: tsens@c222000 {
>> +			compatible = "qcom,qcs615-tsens", "qcom,tsens-v2";
>> +			reg = <0x0 0xc263000 0x0 0x1ff>,
>> +				<0x0 0xc222000 0x0 0x8>;
> Pad the address part to 8 hex digits with leading zeroes> +			interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>,
> 
> &pdc 26
> 
>> +					<GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>;
> 
> &pdc 28
we don't want to mark this as wake up capable, so using this approach.
> 
> Please align the <s
> 
>> +			#qcom,sensors = <16>;
>> +			interrupt-names = "uplow", "critical";
> 
> it would make sense for interrupt-names to come right under interrupts
yes, will update in next patch set.
>> +			#thermal-sensor-cells = <1>;
>> +		};
>>   	};
>>   
>>   	arch_timer: timer {
>> @@ -3677,4 +3688,274 @@ arch_timer: timer {
>>   			     <GIC_PPI 3 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
>>   			     <GIC_PPI 0 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
>>   	};
>> +
>> +	thermal-zones {
>> +		aoss-thermal {
>> +			thermal-sensors = <&tsens0 0>;
>> +
>> +			trips {
>> +
>> +				trip-point0 {
>> +					temperature = <110000>;
>> +					hysteresis = <5000>;
>> +					type = "passive";
>> +				};
>> +			};
>> +		};
>> +
>> +		cpuss-0-thermal {
>> +			thermal-sensors = <&tsens0 1>;
>> +
>> +			trips {
>> +
>> +				trip-point0 {
>> +					temperature = <115000>;
>> +					hysteresis = <5000>;
>> +					type = "passive";
>> +				};
>> +
>> +				trip-point1 {
>> +					temperature = <118000>;
>> +					hysteresis = <5000>;
>> +					type = "passive";
>> +				};
> 
> Please drop the passive trip point for the *CPU* tzones, see
> 

we are using trip-point 0 for cpu idle injection mitigation which i will 
add in subsequent patches, if you are fine i will add cpu idle injection 
cooling map in this series only ?
> commit 06eadce936971dd11279e53b6dfb151804137836
> ("arm64: dts: qcom: x1e80100: Drop unused passive thermal trip points for CPU")
> 
> and add a single critical point instead, see
> 
As critical shutdown is already supported by hardware, so we are not 
defining here.
> commit 03f2b8eed73418269a158ccebad5d8d8f2f6daa1
> ("arm64: dts: qcom: x1e80100: Apply consistent critical thermal shutdown")
> 
> Konrad

Re: [PATCH v1 2/2] arm64: dts: qcom: Enable TSENS support for QCS615 SoC

[Konrad Dybcio]

On 4/14/25 10:28 AM, Gaurav Kohli wrote:
> thanks for review!
> 
> On 4/12/2025 5:13 AM, Konrad Dybcio wrote:
>> On 4/10/25 4:00 PM, Gaurav Kohli wrote:
>>> Add TSENS and thermal devicetree node for QCS615 SoC.
>>>
>>> Signed-off-by: Gaurav Kohli <quic_gkohli@quicinc.com>
>>> ---
>>
>> subject: "arm64: dts: qcom: qcs615: ..">  arch/arm64/boot/dts/qcom/qcs615.dtsi | 281 +++++++++++++++++++++++++++
>>>   1 file changed, 281 insertions(+)
>>>
> will fix this.
>>> diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>> index edfb796d8dd3..f0d8aed7da29 100644
>>> --- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>> +++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>> @@ -3668,6 +3668,17 @@ usb_2_dwc3: usb@a800000 {
>>>                   maximum-speed = "high-speed";
>>>               };
>>>           };
>>> +
>>> +        tsens0: tsens@c222000 {
>>> +            compatible = "qcom,qcs615-tsens", "qcom,tsens-v2";
>>> +            reg = <0x0 0xc263000 0x0 0x1ff>,
>>> +                <0x0 0xc222000 0x0 0x8>;
>> Pad the address part to 8 hex digits with leading zeroes> +            interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>,
>>
>> &pdc 26
>>
>>> +                    <GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>;
>>
>> &pdc 28
> we don't want to mark this as wake up capable, so using this approach.

Why not?

>>> +
>>> +        cpuss-0-thermal {
>>> +            thermal-sensors = <&tsens0 1>;
>>> +
>>> +            trips {
>>> +
>>> +                trip-point0 {
>>> +                    temperature = <115000>;
>>> +                    hysteresis = <5000>;
>>> +                    type = "passive";
>>> +                };
>>> +
>>> +                trip-point1 {
>>> +                    temperature = <118000>;
>>> +                    hysteresis = <5000>;
>>> +                    type = "passive";
>>> +                };
>>
>> Please drop the passive trip point for the *CPU* tzones, see
>>
> 
> we are using trip-point 0 for cpu idle injection mitigation which i will add in subsequent patches, if you are fine i will add cpu idle injection cooling map in this series only ?

The folks working on qcs9xxx have made this point too, but I'm lukewarm
on duplicating meaningless dt description everywhere. I've asked them to
conduct some measurements on whether random default settings (that would
be preset in the driver and require no additional dt fluff) show any
significant difference - if not, we can save up on boilerplate.

So let's wait to hear back from them on this.

>> commit 06eadce936971dd11279e53b6dfb151804137836
>> ("arm64: dts: qcom: x1e80100: Drop unused passive thermal trip points for CPU")
>>
>> and add a single critical point instead, see
>>
> As critical shutdown is already supported by hardware, so we are not defining here.

The hardware critical shutdown will literally pull the plug out with the OS
having no chance to sync the filesystem etc.

Please define one that's like 5 degC below the hardware limit, so that the
operating system can try to take some steps to avoid data loss

Konrad

Re: [PATCH v1 2/2] arm64: dts: qcom: Enable TSENS support for QCS615 SoC

[Gaurav Kohli]

On 4/14/2025 3:23 PM, Konrad Dybcio wrote:
> On 4/14/25 10:28 AM, Gaurav Kohli wrote:
>> thanks for review!
>>
>> On 4/12/2025 5:13 AM, Konrad Dybcio wrote:
>>> On 4/10/25 4:00 PM, Gaurav Kohli wrote:
>>>> Add TSENS and thermal devicetree node for QCS615 SoC.
>>>>
>>>> Signed-off-by: Gaurav Kohli <quic_gkohli@quicinc.com>
>>>> ---
>>>
>>> subject: "arm64: dts: qcom: qcs615: ..">  arch/arm64/boot/dts/qcom/qcs615.dtsi | 281 +++++++++++++++++++++++++++
>>>>    1 file changed, 281 insertions(+)
>>>>
>> will fix this.
>>>> diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>>> index edfb796d8dd3..f0d8aed7da29 100644
>>>> --- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>>> +++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>>> @@ -3668,6 +3668,17 @@ usb_2_dwc3: usb@a800000 {
>>>>                    maximum-speed = "high-speed";
>>>>                };
>>>>            };
>>>> +
>>>> +        tsens0: tsens@c222000 {
>>>> +            compatible = "qcom,qcs615-tsens", "qcom,tsens-v2";
>>>> +            reg = <0x0 0xc263000 0x0 0x1ff>,
>>>> +                <0x0 0xc222000 0x0 0x8>;
>>> Pad the address part to 8 hex digits with leading zeroes> +            interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>,
>>>
>>> &pdc 26
>>>
>>>> +                    <GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>;
>>>
>>> &pdc 28
>> we don't want to mark this as wake up capable, so using this approach.
> 
> Why not?
> 
Intention was to avoid wake up, as system is already in lowest state, 
please let me know if you see any concern here.
>>>> +
>>>> +        cpuss-0-thermal {
>>>> +            thermal-sensors = <&tsens0 1>;
>>>> +
>>>> +            trips {
>>>> +
>>>> +                trip-point0 {
>>>> +                    temperature = <115000>;
>>>> +                    hysteresis = <5000>;
>>>> +                    type = "passive";
>>>> +                };
>>>> +
>>>> +                trip-point1 {
>>>> +                    temperature = <118000>;
>>>> +                    hysteresis = <5000>;
>>>> +                    type = "passive";
>>>> +                };
>>>
>>> Please drop the passive trip point for the *CPU* tzones, see
>>>
>>
>> we are using trip-point 0 for cpu idle injection mitigation which i will add in subsequent patches, if you are fine i will add cpu idle injection cooling map in this series only ?
> 
> The folks working on qcs9xxx have made this point too, but I'm lukewarm
> on duplicating meaningless dt description everywhere. I've asked them to
> conduct some measurements on whether random default settings (that would
> be preset in the driver and require no additional dt fluff) show any
> significant difference - if not, we can save up on boilerplate.
> 
> So let's wait to hear back from them on this.
> 
Sure will wait for latest update.
>>> commit 06eadce936971dd11279e53b6dfb151804137836
>>> ("arm64: dts: qcom: x1e80100: Drop unused passive thermal trip points for CPU")
>>>
>>> and add a single critical point instead, see
>>>
>> As critical shutdown is already supported by hardware, so we are not defining here.
> 
> The hardware critical shutdown will literally pull the plug out with the OS
> having no chance to sync the filesystem etc.
> 
> Please define one that's like 5 degC below the hardware limit, so that the
> operating system can try to take some steps to avoid data loss
> 

Sure will post critical in next patch.
> Konrad

Re: [PATCH v1 2/2] arm64: dts: qcom: Enable TSENS support for QCS615 SoC

[Dmitry Baryshkov]

On Mon, Apr 14, 2025 at 01:58:12PM +0530, Gaurav Kohli wrote:
> thanks for review!
> 
> On 4/12/2025 5:13 AM, Konrad Dybcio wrote:
> > On 4/10/25 4:00 PM, Gaurav Kohli wrote:
> > > Add TSENS and thermal devicetree node for QCS615 SoC.
> > > 
> > > Signed-off-by: Gaurav Kohli <quic_gkohli@quicinc.com>
> > > ---
> > 
> > > +		cpuss-0-thermal {
> > > +			thermal-sensors = <&tsens0 1>;
> > > +
> > > +			trips {
> > > +
> > > +				trip-point0 {
> > > +					temperature = <115000>;
> > > +					hysteresis = <5000>;
> > > +					type = "passive";
> > > +				};
> > > +
> > > +				trip-point1 {
> > > +					temperature = <118000>;
> > > +					hysteresis = <5000>;
> > > +					type = "passive";
> > > +				};
> > 
> > Please drop the passive trip point for the *CPU* tzones, see
> > 
> 
> we are using trip-point 0 for cpu idle injection mitigation which i will add
> in subsequent patches, if you are fine i will add cpu idle injection cooling
> map in this series only ?

I'd second Konrad here. Please drop them now and add them in the patch
adding CPUidle injection cooling. Otherwise they are a perfect target
for anybody to clean them away.

> > commit 06eadce936971dd11279e53b6dfb151804137836
> > ("arm64: dts: qcom: x1e80100: Drop unused passive thermal trip points for CPU")
> > 
> > and add a single critical point instead, see
> > 
> As critical shutdown is already supported by hardware, so we are not
> defining here.

What about letting Linux to know about it and perform a slightly
graceful shutdown?

> > commit 03f2b8eed73418269a158ccebad5d8d8f2f6daa1
> > ("arm64: dts: qcom: x1e80100: Apply consistent critical thermal shutdown")
> > 
> > Konrad
> 

-- 
With best wishes
Dmitry