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[PATCH v3 6/6] ARM64: mt8195: Use thermal aggregation for big and little cpu

Alexandre Bailon posted 6 patches 1 year, 8 months ago
There is a newer version of this series
[PATCH v3 6/6] ARM64: mt8195: Use thermal aggregation for big and little cpu
Posted by Alexandre Bailon 1 year, 8 months ago 
This uses the thermal aggregation for the mt8195 to get the maximal
temperature of big and little cpu clusters.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8195.dtsi | 212 +++--------------------
 1 file changed, 27 insertions(+), 185 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
index 5d8b68f86ce4..8aa2bf142622 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
@@ -3600,50 +3600,31 @@ dp_tx: dp-tx@1c600000 {
 	};
 
 	thermal_zones: thermal-zones {
-		cpu0-thermal {
+		cpu-little {
 			polling-delay = <1000>;
-			polling-delay-passive = <250>;
-			thermal-sensors = <&lvts_mcu MT8195_MCU_LITTLE_CPU0>;
+			polling-delay-passive = <100>;
+			thermal-sensors = <&lvts_mcu MT8195_MCU_LITTLE_CPU0>,
+					  <&lvts_mcu MT8195_MCU_LITTLE_CPU1>,
+					  <&lvts_mcu MT8195_MCU_LITTLE_CPU2>,
+					  <&lvts_mcu MT8195_MCU_LITTLE_CPU3>;
+			sustainable-power = <1500>;
+			aggregation = "max";
 
 			trips {
-				cpu0_alert: trip-alert {
-					temperature = <85000>;
+				cpu_little_threshold: trip-point {
+					temperature = <68000>;
 					hysteresis = <2000>;
 					type = "passive";
 				};
 
-				cpu0_crit: trip-crit {
-					temperature = <100000>;
-					hysteresis = <2000>;
-					type = "critical";
-				};
-			};
-
-			cooling-maps {
-				map0 {
-					trip = <&cpu0_alert>;
-					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
-				};
-			};
-		};
-
-		cpu1-thermal {
-			polling-delay = <1000>;
-			polling-delay-passive = <250>;
-			thermal-sensors = <&lvts_mcu MT8195_MCU_LITTLE_CPU1>;
-
-			trips {
-				cpu1_alert: trip-alert {
+				cpu_little_target: target {
 					temperature = <85000>;
 					hysteresis = <2000>;
 					type = "passive";
 				};
 
-				cpu1_crit: trip-crit {
-					temperature = <100000>;
+				cpu_little_soc_max_crit: soc-max-crit {
+					temperature = <115000>;
 					hysteresis = <2000>;
 					type = "critical";
 				};
@@ -3651,7 +3632,7 @@ cpu1_crit: trip-crit {
 
 			cooling-maps {
 				map0 {
-					trip = <&cpu1_alert>;
+					trip = <&cpu_little_target>;
 					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
 								<&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
 								<&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
@@ -3660,170 +3641,31 @@ map0 {
 			};
 		};
 
-		cpu2-thermal {
+		cpu-big {
 			polling-delay = <1000>;
 			polling-delay-passive = <250>;
-			thermal-sensors = <&lvts_mcu MT8195_MCU_LITTLE_CPU2>;
+			thermal-sensors = <&lvts_mcu MT8195_MCU_BIG_CPU0>,
+					  <&lvts_mcu MT8195_MCU_BIG_CPU1>,
+					  <&lvts_mcu MT8195_MCU_BIG_CPU2>,
+					  <&lvts_mcu MT8195_MCU_BIG_CPU3>;
+			sustainable-power = <1500>;
+			aggregation = "max";
 
 			trips {
-				cpu2_alert: trip-alert {
-					temperature = <85000>;
+				cpu_big_threshold: trip-point {
+					temperature = <68000>;
 					hysteresis = <2000>;
 					type = "passive";
 				};
 
-				cpu2_crit: trip-crit {
-					temperature = <100000>;
-					hysteresis = <2000>;
-					type = "critical";
-				};
-			};
-
-			cooling-maps {
-				map0 {
-					trip = <&cpu2_alert>;
-					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
-				};
-			};
-		};
-
-		cpu3-thermal {
-			polling-delay = <1000>;
-			polling-delay-passive = <250>;
-			thermal-sensors = <&lvts_mcu MT8195_MCU_LITTLE_CPU3>;
-
-			trips {
-				cpu3_alert: trip-alert {
-					temperature = <85000>;
-					hysteresis = <2000>;
-					type = "passive";
-				};
-
-				cpu3_crit: trip-crit {
-					temperature = <100000>;
-					hysteresis = <2000>;
-					type = "critical";
-				};
-			};
-
-			cooling-maps {
-				map0 {
-					trip = <&cpu3_alert>;
-					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
-				};
-			};
-		};
-
-		cpu4-thermal {
-			polling-delay = <1000>;
-			polling-delay-passive = <250>;
-			thermal-sensors = <&lvts_mcu MT8195_MCU_BIG_CPU0>;
-
-			trips {
-				cpu4_alert: trip-alert {
+				cpu_big_target: target {
 					temperature = <85000>;
 					hysteresis = <2000>;
 					type = "passive";
 				};
 
-				cpu4_crit: trip-crit {
-					temperature = <100000>;
-					hysteresis = <2000>;
-					type = "critical";
-				};
-			};
-
-			cooling-maps {
-				map0 {
-					trip = <&cpu4_alert>;
-					cooling-device = <&cpu4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
-				};
-			};
-		};
-
-		cpu5-thermal {
-			polling-delay = <1000>;
-			polling-delay-passive = <250>;
-			thermal-sensors = <&lvts_mcu MT8195_MCU_BIG_CPU1>;
-
-			trips {
-				cpu5_alert: trip-alert {
-					temperature = <85000>;
-					hysteresis = <2000>;
-					type = "passive";
-				};
-
-				cpu5_crit: trip-crit {
-					temperature = <100000>;
-					hysteresis = <2000>;
-					type = "critical";
-				};
-			};
-
-			cooling-maps {
-				map0 {
-					trip = <&cpu5_alert>;
-					cooling-device = <&cpu4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
-				};
-			};
-		};
-
-		cpu6-thermal {
-			polling-delay = <1000>;
-			polling-delay-passive = <250>;
-			thermal-sensors = <&lvts_mcu MT8195_MCU_BIG_CPU2>;
-
-			trips {
-				cpu6_alert: trip-alert {
-					temperature = <85000>;
-					hysteresis = <2000>;
-					type = "passive";
-				};
-
-				cpu6_crit: trip-crit {
-					temperature = <100000>;
-					hysteresis = <2000>;
-					type = "critical";
-				};
-			};
-
-			cooling-maps {
-				map0 {
-					trip = <&cpu6_alert>;
-					cooling-device = <&cpu4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-								<&cpu7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
-				};
-			};
-		};
-
-		cpu7-thermal {
-			polling-delay = <1000>;
-			polling-delay-passive = <250>;
-			thermal-sensors = <&lvts_mcu MT8195_MCU_BIG_CPU3>;
-
-			trips {
-				cpu7_alert: trip-alert {
-					temperature = <85000>;
-					hysteresis = <2000>;
-					type = "passive";
-				};
-
-				cpu7_crit: trip-crit {
-					temperature = <100000>;
+				cpu_big_soc_max_crit: soc-max-crit {
+					temperature = <115000>;
 					hysteresis = <2000>;
 					type = "critical";
 				};
@@ -3831,7 +3673,7 @@ cpu7_crit: trip-crit {
 
 			cooling-maps {
 				map0 {
-					trip = <&cpu7_alert>;
+					trip = <&cpu_big_target>;
 					cooling-device = <&cpu4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
 								<&cpu5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
 								<&cpu6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
-- 
2.44.1
Re: [PATCH v3 6/6] ARM64: mt8195: Use thermal aggregation for big and little cpu
Posted by Krzysztof Kozlowski 1 year, 8 months ago 
On 24/05/2024 16:31, Alexandre Bailon wrote:
> This uses the thermal aggregation for the mt8195 to get the maximal
> temperature of big and little cpu clusters.
> 
> Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
> ---
>  arch/arm64/boot/dts/mediatek/mt8195.dtsi | 212 +++--------------------
>  1 file changed, 27 insertions(+), 185 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> index 5d8b68f86ce4..8aa2bf142622 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> @@ -3600,50 +3600,31 @@ dp_tx: dp-tx@1c600000 {
>  	};
>  
>  	thermal_zones: thermal-zones {
> -		cpu0-thermal {
> +		cpu-little {

How is it related to the commit?

Does not look tested. You just introduced warnings.

Best regards,
Krzysztof
Re: [PATCH v3 6/6] ARM64: mt8195: Use thermal aggregation for big and little cpu
Posted by Alexandre Bailon 1 year, 8 months ago 

On 5/27/24 08:56, Krzysztof Kozlowski wrote:
> On 24/05/2024 16:31, Alexandre Bailon wrote:
>> This uses the thermal aggregation for the mt8195 to get the maximal
>> temperature of big and little cpu clusters.
>>
>> Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
>> ---
>>   arch/arm64/boot/dts/mediatek/mt8195.dtsi | 212 +++--------------------
>>   1 file changed, 27 insertions(+), 185 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
>> index 5d8b68f86ce4..8aa2bf142622 100644
>> --- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
>> +++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
>> @@ -3600,50 +3600,31 @@ dp_tx: dp-tx@1c600000 {
>>   	};
>>   
>>   	thermal_zones: thermal-zones {
>> -		cpu0-thermal {
>> +		cpu-little {
> 
> How is it related to the commit?
To aggregate all thermal sensors which are in same performance domain, 
we removes each individual nodes to create only two: cpu-little and cpu-big.
We need to remove the other nodes because their trips points and cooling 
devices would conflict with those we define for the multi sensor thermal 
zone.

Best Regards,
Alexandre
> 
> Does not look tested. You just introduced warnings.
> 
> Best regards,
> Krzysztof
>
Re: [PATCH v3 6/6] ARM64: mt8195: Use thermal aggregation for big and little cpu
Posted by Krzysztof Kozlowski 1 year, 8 months ago 
On 29/05/2024 10:19, Alexandre Bailon wrote:
> 
> 
> On 5/27/24 08:56, Krzysztof Kozlowski wrote:
>> On 24/05/2024 16:31, Alexandre Bailon wrote:
>>> This uses the thermal aggregation for the mt8195 to get the maximal
>>> temperature of big and little cpu clusters.
>>>
>>> Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
>>> ---
>>>   arch/arm64/boot/dts/mediatek/mt8195.dtsi | 212 +++--------------------
>>>   1 file changed, 27 insertions(+), 185 deletions(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
>>> index 5d8b68f86ce4..8aa2bf142622 100644
>>> --- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
>>> +++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
>>> @@ -3600,50 +3600,31 @@ dp_tx: dp-tx@1c600000 {
>>>   	};
>>>   
>>>   	thermal_zones: thermal-zones {
>>> -		cpu0-thermal {
>>> +		cpu-little {
>>
>> How is it related to the commit?
> To aggregate all thermal sensors which are in same performance domain, 
> we removes each individual nodes to create only two: cpu-little and cpu-big.

OK...

> We need to remove the other nodes because their trips points and cooling 
> devices would conflict with those we define for the multi sensor thermal 
> zone.
> 
> Best Regards,
> Alexandre
>>
>> Does not look tested. You just introduced warnings.

Yet still I claim it wasn't tested. See SoC maintainer profile documents
and/or writing-schema.

Best regards,
Krzysztof

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