1. Patchew
  2. linux
  3. [PATCH 0/3] Add support to scale DDR and L3 on SA8775P
  4. View patch

[PATCH 1/3] arm64: dts: qcom: sa8775p: Add support to scale DDR/L3

Jagadeesh Kona posted 3 patches 1 year, 3 months ago
There is a newer version of this series
[PATCH 1/3] arm64: dts: qcom: sa8775p: Add support to scale DDR/L3
Posted by Jagadeesh Kona 1 year, 3 months ago 
Add support to scale DDR and L3 based on CPU frequencies
on SA8775P platform.

Signed-off-by: Jagadeesh Kona <quic_jkona@quicinc.com>
---
 arch/arm64/boot/dts/qcom/sa8775p.dtsi | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
index 06bf2ba556b89b643da901857a9aa7cdc7ba90cc..d8b90bd4b1f05604185f015929a1f296799ad6a4 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/interconnect/qcom,icc.h>
+#include <dt-bindings/interconnect/qcom,osm-l3.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/clock/qcom,rpmh.h>
 #include <dt-bindings/clock/qcom,sa8775p-gcc.h>
@@ -47,6 +48,10 @@ CPU0: cpu@0 {
 			next-level-cache = <&L2_0>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
+			interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+					&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,
+					<&epss_l3_cl0 MASTER_EPSS_L3_APPS
+					&epss_l3_cl0 SLAVE_EPSS_L3_SHARED>;
 			L2_0: l2-cache {
 				compatible = "cache";
 				cache-level = <2>;
@@ -69,6 +74,10 @@ CPU1: cpu@100 {
 			next-level-cache = <&L2_1>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
+			interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+					&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,
+					<&epss_l3_cl0 MASTER_EPSS_L3_APPS
+					&epss_l3_cl0 SLAVE_EPSS_L3_SHARED>;
 			L2_1: l2-cache {
 				compatible = "cache";
 				cache-level = <2>;
@@ -86,6 +95,10 @@ CPU2: cpu@200 {
 			next-level-cache = <&L2_2>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
+			interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+					&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,
+					<&epss_l3_cl0 MASTER_EPSS_L3_APPS
+					&epss_l3_cl0 SLAVE_EPSS_L3_SHARED>;
 			L2_2: l2-cache {
 				compatible = "cache";
 				cache-level = <2>;
@@ -103,6 +116,10 @@ CPU3: cpu@300 {
 			next-level-cache = <&L2_3>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
+			interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+					&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,
+					<&epss_l3_cl0 MASTER_EPSS_L3_APPS
+					&epss_l3_cl0 SLAVE_EPSS_L3_SHARED>;
 			L2_3: l2-cache {
 				compatible = "cache";
 				cache-level = <2>;
@@ -120,6 +137,10 @@ CPU4: cpu@10000 {
 			next-level-cache = <&L2_4>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
+			interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+					&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,
+					<&epss_l3_cl1 MASTER_EPSS_L3_APPS
+					&epss_l3_cl1 SLAVE_EPSS_L3_SHARED>;
 			L2_4: l2-cache {
 				compatible = "cache";
 				cache-level = <2>;
@@ -143,6 +164,10 @@ CPU5: cpu@10100 {
 			next-level-cache = <&L2_5>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
+			interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+					&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,
+					<&epss_l3_cl1 MASTER_EPSS_L3_APPS
+					&epss_l3_cl1 SLAVE_EPSS_L3_SHARED>;
 			L2_5: l2-cache {
 				compatible = "cache";
 				cache-level = <2>;
@@ -160,6 +185,10 @@ CPU6: cpu@10200 {
 			next-level-cache = <&L2_6>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
+			interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+					&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,
+					<&epss_l3_cl1 MASTER_EPSS_L3_APPS
+					&epss_l3_cl1 SLAVE_EPSS_L3_SHARED>;
 			L2_6: l2-cache {
 				compatible = "cache";
 				cache-level = <2>;
@@ -177,6 +206,10 @@ CPU7: cpu@10300 {
 			next-level-cache = <&L2_7>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
+			interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+					&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,
+					<&epss_l3_cl1 MASTER_EPSS_L3_APPS
+					&epss_l3_cl1 SLAVE_EPSS_L3_SHARED>;
 			L2_7: l2-cache {
 				compatible = "cache";
 				cache-level = <2>;

-- 
2.34.1
Re: [PATCH 1/3] arm64: dts: qcom: sa8775p: Add support to scale DDR/L3
Posted by Konrad Dybcio 1 year, 3 months ago 
On 17.10.2024 11:28 AM, Jagadeesh Kona wrote:
> Add support to scale DDR and L3 based on CPU frequencies
> on SA8775P platform.
> 
> Signed-off-by: Jagadeesh Kona <quic_jkona@quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sa8775p.dtsi | 33 +++++++++++++++++++++++++++++++++
>  1 file changed, 33 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> index 06bf2ba556b89b643da901857a9aa7cdc7ba90cc..d8b90bd4b1f05604185f015929a1f296799ad6a4 100644
> --- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> @@ -4,6 +4,7 @@
>   */
>  
>  #include <dt-bindings/interconnect/qcom,icc.h>
> +#include <dt-bindings/interconnect/qcom,osm-l3.h>
>  #include <dt-bindings/interrupt-controller/arm-gic.h>
>  #include <dt-bindings/clock/qcom,rpmh.h>
>  #include <dt-bindings/clock/qcom,sa8775p-gcc.h>
> @@ -47,6 +48,10 @@ CPU0: cpu@0 {
>  			next-level-cache = <&L2_0>;
>  			capacity-dmips-mhz = <1024>;
>  			dynamic-power-coefficient = <100>;
> +			interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
> +					&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,

Please align the '&'s and squash with patch 2. This one doesn't cause
much difference on its own, which makes the commit message misleading

Konrad
Re: [PATCH 1/3] arm64: dts: qcom: sa8775p: Add support to scale DDR/L3
Posted by Jagadeesh Kona 1 year, 3 months ago 

On 10/18/2024 4:22 AM, Konrad Dybcio wrote:
> On 17.10.2024 11:28 AM, Jagadeesh Kona wrote:
>> Add support to scale DDR and L3 based on CPU frequencies
>> on SA8775P platform.
>>
>> Signed-off-by: Jagadeesh Kona <quic_jkona@quicinc.com>
>> ---
>>  arch/arm64/boot/dts/qcom/sa8775p.dtsi | 33 +++++++++++++++++++++++++++++++++
>>  1 file changed, 33 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> index 06bf2ba556b89b643da901857a9aa7cdc7ba90cc..d8b90bd4b1f05604185f015929a1f296799ad6a4 100644
>> --- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> @@ -4,6 +4,7 @@
>>   */
>>  
>>  #include <dt-bindings/interconnect/qcom,icc.h>
>> +#include <dt-bindings/interconnect/qcom,osm-l3.h>
>>  #include <dt-bindings/interrupt-controller/arm-gic.h>
>>  #include <dt-bindings/clock/qcom,rpmh.h>
>>  #include <dt-bindings/clock/qcom,sa8775p-gcc.h>
>> @@ -47,6 +48,10 @@ CPU0: cpu@0 {
>>  			next-level-cache = <&L2_0>;
>>  			capacity-dmips-mhz = <1024>;
>>  			dynamic-power-coefficient = <100>;
>> +			interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
>> +					&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>,
> 
> Please align the '&'s and squash with patch 2. This one doesn't cause
> much difference on its own, which makes the commit message misleading
> 
> Konrad

Thanks Konrad for your review. Sure will take care of this in next series.

Thanks,
Jagadeesh

Patchew 2.1-devel-b67e4c2

© 2016 - 2026 Red Hat, Inc.