[PATCH] arm64: dts: qcom: sm8750: Fix cluster hierarchy for idle states

[PATCH] arm64: dts: qcom: sm8750: Fix cluster hierarchy for idle states

[Maulik Shah]

SM8750 have two different clusters. cluster0 have CPU 0-5 as child and
cluster1 have CPU 6-7 as child. Each cluster requires its own idle state
and power domain in order to achieve complete domain sleep state.

However only single cluster idle state is added mapping CPU 0-7 to the
same power domain. Fix this by correctly mapping each CPU to respective
cluster power domain and add domain idle state for cluster1.

Fixes: 068c3d3c83be ("arm64: dts: qcom: Add base SM8750 dtsi")
Signed-off-by: Maulik Shah <maulik.shah@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/sm8750.dtsi | 36 +++++++++++++++++++++++++-----------
 1 file changed, 25 insertions(+), 11 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi
index 3bbd7d18598ee0a3a0d5130c03a3166e1fc14d82..3af928be5b68b47988dd55f4add8e3712f07d5ab 100644
--- a/arch/arm64/boot/dts/qcom/sm8750.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8750.dtsi
@@ -178,7 +178,15 @@ cluster1_c4: cpu-sleep-1 {
 		};
 
 		domain-idle-states {
-			cluster_cl5: cluster-sleep-0 {
+			cluster0_cl5: cluster-sleep-0 {
+				compatible = "domain-idle-state";
+				arm,psci-suspend-param = <0x01000054>;
+				entry-latency-us = <2150>;
+				exit-latency-us = <1983>;
+				min-residency-us = <9144>;
+			};
+
+			cluster1_cl5: cluster-sleep-1 {
 				compatible = "domain-idle-state";
 				arm,psci-suspend-param = <0x01000054>;
 				entry-latency-us = <2150>;
@@ -233,55 +241,61 @@ psci {
 
 		cpu_pd0: power-domain-cpu0 {
 			#power-domain-cells = <0>;
-			power-domains = <&cluster_pd>;
+			power-domains = <&cluster0_pd>;
 			domain-idle-states = <&cluster0_c4>;
 		};
 
 		cpu_pd1: power-domain-cpu1 {
 			#power-domain-cells = <0>;
-			power-domains = <&cluster_pd>;
+			power-domains = <&cluster0_pd>;
 			domain-idle-states = <&cluster0_c4>;
 		};
 
 		cpu_pd2: power-domain-cpu2 {
 			#power-domain-cells = <0>;
-			power-domains = <&cluster_pd>;
+			power-domains = <&cluster0_pd>;
 			domain-idle-states = <&cluster0_c4>;
 		};
 
 		cpu_pd3: power-domain-cpu3 {
 			#power-domain-cells = <0>;
-			power-domains = <&cluster_pd>;
+			power-domains = <&cluster0_pd>;
 			domain-idle-states = <&cluster0_c4>;
 		};
 
 		cpu_pd4: power-domain-cpu4 {
 			#power-domain-cells = <0>;
-			power-domains = <&cluster_pd>;
+			power-domains = <&cluster0_pd>;
 			domain-idle-states = <&cluster0_c4>;
 		};
 
 		cpu_pd5: power-domain-cpu5 {
 			#power-domain-cells = <0>;
-			power-domains = <&cluster_pd>;
+			power-domains = <&cluster0_pd>;
 			domain-idle-states = <&cluster0_c4>;
 		};
 
 		cpu_pd6: power-domain-cpu6 {
 			#power-domain-cells = <0>;
-			power-domains = <&cluster_pd>;
+			power-domains = <&cluster1_pd>;
 			domain-idle-states = <&cluster1_c4>;
 		};
 
 		cpu_pd7: power-domain-cpu7 {
 			#power-domain-cells = <0>;
-			power-domains = <&cluster_pd>;
+			power-domains = <&cluster1_pd>;
 			domain-idle-states = <&cluster1_c4>;
 		};
 
-		cluster_pd: power-domain-cluster {
+		cluster0_pd: power-domain-cluster0 {
+			#power-domain-cells = <0>;
+			domain-idle-states = <&cluster0_cl5>;
+			power-domains = <&system_pd>;
+		};
+
+		cluster1_pd: power-domain-cluster1 {
 			#power-domain-cells = <0>;
-			domain-idle-states = <&cluster_cl5>;
+			domain-idle-states = <&cluster1_cl5>;
 			power-domains = <&system_pd>;
 		};
 

---
base-commit: e5d3fd687aac5eceb1721fa92b9f49afcf4c3717
change-id: 20250218-sm8750_cluster_idle-6fe358eb8c7e

Best regards,
-- 
Maulik Shah <maulik.shah@oss.qualcomm.com>

Re: [PATCH] arm64: dts: qcom: sm8750: Fix cluster hierarchy for idle states

[Konrad Dybcio]

On 18.02.2025 7:58 AM, Maulik Shah wrote:
> SM8750 have two different clusters. cluster0 have CPU 0-5 as child and
> cluster1 have CPU 6-7 as child. Each cluster requires its own idle state
> and power domain in order to achieve complete domain sleep state.
> 
> However only single cluster idle state is added mapping CPU 0-7 to the
> same power domain. Fix this by correctly mapping each CPU to respective
> cluster power domain and add domain idle state for cluster1.
> 
> Fixes: 068c3d3c83be ("arm64: dts: qcom: Add base SM8750 dtsi")
> Signed-off-by: Maulik Shah <maulik.shah@oss.qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/sm8750.dtsi | 36 +++++++++++++++++++++++++-----------
>  1 file changed, 25 insertions(+), 11 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi
> index 3bbd7d18598ee0a3a0d5130c03a3166e1fc14d82..3af928be5b68b47988dd55f4add8e3712f07d5ab 100644
> --- a/arch/arm64/boot/dts/qcom/sm8750.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8750.dtsi
> @@ -178,7 +178,15 @@ cluster1_c4: cpu-sleep-1 {
>  		};
>  
>  		domain-idle-states {
> -			cluster_cl5: cluster-sleep-0 {
> +			cluster0_cl5: cluster-sleep-0 {
> +				compatible = "domain-idle-state";
> +				arm,psci-suspend-param = <0x01000054>;
> +				entry-latency-us = <2150>;
> +				exit-latency-us = <1983>;
> +				min-residency-us = <9144>;
> +			};

I don't think this is necessary, you should be gtg with just creating the
new power domain for cluster 0/1 and pointing both to the same cluster idle
state (unless they both need different latency numbers

Konrad

Re: [PATCH] arm64: dts: qcom: sm8750: Fix cluster hierarchy for idle states

[Maulik Shah (mkshah)]

On 2/22/2025 1:21 AM, Konrad Dybcio wrote:
> On 18.02.2025 7:58 AM, Maulik Shah wrote:
>> SM8750 have two different clusters. cluster0 have CPU 0-5 as child and
>> cluster1 have CPU 6-7 as child. Each cluster requires its own idle state
>> and power domain in order to achieve complete domain sleep state.
>>
>> However only single cluster idle state is added mapping CPU 0-7 to the
>> same power domain. Fix this by correctly mapping each CPU to respective
>> cluster power domain and add domain idle state for cluster1.
>>
>> Fixes: 068c3d3c83be ("arm64: dts: qcom: Add base SM8750 dtsi")
>> Signed-off-by: Maulik Shah <maulik.shah@oss.qualcomm.com>
>> ---
>>  arch/arm64/boot/dts/qcom/sm8750.dtsi | 36 +++++++++++++++++++++++++-----------
>>  1 file changed, 25 insertions(+), 11 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi
>> index 3bbd7d18598ee0a3a0d5130c03a3166e1fc14d82..3af928be5b68b47988dd55f4add8e3712f07d5ab 100644
>> --- a/arch/arm64/boot/dts/qcom/sm8750.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sm8750.dtsi
>> @@ -178,7 +178,15 @@ cluster1_c4: cpu-sleep-1 {
>>  		};
>>  
>>  		domain-idle-states {
>> -			cluster_cl5: cluster-sleep-0 {
>> +			cluster0_cl5: cluster-sleep-0 {
>> +				compatible = "domain-idle-state";
>> +				arm,psci-suspend-param = <0x01000054>;
>> +				entry-latency-us = <2150>;
>> +				exit-latency-us = <1983>;
>> +				min-residency-us = <9144>;
>> +			};
> 
> I don't think this is necessary, you should be gtg with just creating the
> new power domain for cluster 0/1 and pointing both to the same cluster idle
> state (unless they both need different latency numbers
> 

Sure, I will address this in v2.

Thanks,
Maulik

> Konrad