[PATCH RESEND v7 03/10] arm64: dts: qcom: shikra: Add cpufreq-hw, EPSS L3 interconnect and OPP tables

Komal Bajaj <[email protected]> Mon, 03 Aug 2026 16:56:32 +0530
Newsgroups	org.kernel.vger.dmaengine,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel,org.kernel.vger.linux-pm
Message-ID	<[email protected]>
Add cpufreq-hw node to support cpufreq scaling on Qualcomm Shikra SoCs.
Also, add Epoch Subsystem (EPSS) L3 interconnect provider node and OPP
tables required to scale DDR and L3 per freq-domain on Shikra SoC.

Co-developed-by: Aastha Pandey <[email protected]>
Signed-off-by: Aastha Pandey <[email protected]>
Co-developed-by: Imran Shaik <[email protected]>
Signed-off-by: Imran Shaik <[email protected]>
Co-developed-by: Raviteja Laggyshetty <[email protected]>
Signed-off-by: Raviteja Laggyshetty <[email protected]>
Co-developed-by: Sayantan Chakraborty <[email protected]>
Signed-off-by: Sayantan Chakraborty <[email protected]>
Reviewed-by: Konrad Dybcio <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Signed-off-by: Komal Bajaj <[email protected]>
---
 arch/arm64/boot/dts/qcom/shikra.dtsi | 140 +++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/shikra.dtsi b/arch/arm64/boot/dts/qcom/shikra.dtsi
index 3582352dcff7..a01e26d9ee6d 100644
--- a/arch/arm64/boot/dts/qcom/shikra.dtsi
+++ b/arch/arm64/boot/dts/qcom/shikra.dtsi
@@ -6,6 +6,7 @@
 #include <dt-bindings/clock/qcom,rpmcc.h>
 #include <dt-bindings/clock/qcom,shikra-gcc.h>
 #include <dt-bindings/interconnect/qcom,icc.h>
+#include <dt-bindings/interconnect/qcom,osm-l3.h>
 #include <dt-bindings/dma/qcom-gpi.h>
 #include <dt-bindings/interconnect/qcom,rpm-icc.h>
 #include <dt-bindings/interconnect/qcom,shikra.h>
@@ -44,6 +45,14 @@ cpu0: cpu@0 {
 			next-level-cache = <&l3>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
+			clocks = <&cpufreq_hw 0>;
+			qcom,freq-domain = <&cpufreq_hw 0>;
+			#cooling-cells = <2>;
+			operating-points-v2 = <&cpu0_opp_table>;
+			interconnects = <&mem_noc MASTER_AMPSS_M0 RPM_ACTIVE_TAG
+					 &mc_virt SLAVE_EBI_CH0 RPM_ACTIVE_TAG>,
+					<&epss_l3 MASTER_EPSS_L3_APPS
+					 &epss_l3 SLAVE_EPSS_L3_SHARED>;
 		};
 
 		cpu1: cpu@100 {
@@ -54,6 +63,14 @@ cpu1: cpu@100 {
 			next-level-cache = <&l3>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
+			clocks = <&cpufreq_hw 0>;
+			qcom,freq-domain = <&cpufreq_hw 0>;
+			#cooling-cells = <2>;
+			operating-points-v2 = <&cpu0_opp_table>;
+			interconnects = <&mem_noc MASTER_AMPSS_M0 RPM_ACTIVE_TAG
+					 &mc_virt SLAVE_EBI_CH0 RPM_ACTIVE_TAG>,
+					<&epss_l3 MASTER_EPSS_L3_APPS
+					 &epss_l3 SLAVE_EPSS_L3_SHARED>;
 		};
 
 		cpu2: cpu@200 {
@@ -64,6 +81,14 @@ cpu2: cpu@200 {
 			next-level-cache = <&l3>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
+			clocks = <&cpufreq_hw 0>;
+			qcom,freq-domain = <&cpufreq_hw 0>;
+			#cooling-cells = <2>;
+			operating-points-v2 = <&cpu0_opp_table>;
+			interconnects = <&mem_noc MASTER_AMPSS_M0 RPM_ACTIVE_TAG
+					 &mc_virt SLAVE_EBI_CH0 RPM_ACTIVE_TAG>,
+					<&epss_l3 MASTER_EPSS_L3_APPS
+					 &epss_l3 SLAVE_EPSS_L3_SHARED>;
 		};
 
 		cpu3: cpu@300 {
@@ -74,6 +99,14 @@ cpu3: cpu@300 {
 			next-level-cache = <&l2_3>;
 			capacity-dmips-mhz = <1946>;
 			dynamic-power-coefficient = <489>;
+			clocks = <&cpufreq_hw 1>;
+			qcom,freq-domain = <&cpufreq_hw 1>;
+			#cooling-cells = <2>;
+			operating-points-v2 = <&cpu3_opp_table>;
+			interconnects = <&mem_noc MASTER_AMPSS_M0 RPM_ACTIVE_TAG
+					 &mc_virt SLAVE_EBI_CH0 RPM_ACTIVE_TAG>,
+					<&epss_l3 MASTER_EPSS_L3_APPS
+					 &epss_l3 SLAVE_EPSS_L3_SHARED>;
 
 			l2_3: l2-cache {
 				compatible = "cache";
@@ -132,6 +165,86 @@ memory@80000000 {
 		reg = <0x0 0x80000000 0x0 0x0>;
 	};
 
+	cpu0_opp_table: opp-table-cpu0 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-768000000 {
+			opp-hz = /bits/ 64 <768000000>;
+			opp-peak-kBps = <1200000 17817600>;
+		};
+
+		opp-1017600000 {
+			opp-hz = /bits/ 64 <1017600000>;
+			opp-peak-kBps = <2188000 25804800>;
+		};
+
+		opp-1094400000 {
+			opp-hz = /bits/ 64 <1094400000>;
+			opp-peak-kBps = <3072000 30105600>;
+		};
+
+		opp-1497600000 {
+			opp-hz = /bits/ 64 <1497600000>;
+			opp-peak-kBps = <4068000 38707200>;
+		};
+
+		opp-1612800000 {
+			opp-hz = /bits/ 64 <1612800000>;
+			opp-peak-kBps = <6220000 43008000>;
+		};
+
+		opp-1804800000 {
+			opp-hz = /bits/ 64 <1804800000>;
+			opp-peak-kBps = <7216000 43622400>;
+		};
+
+		opp-2208000000 {
+			opp-hz = /bits/ 64 <2208000000>;
+			opp-peak-kBps = <7216000 43622400>;
+		};
+	};
+
+	cpu3_opp_table: opp-table-cpu3 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-768000000 {
+			opp-hz = /bits/ 64 <768000000>;
+			opp-peak-kBps = <1200000 17817600>;
+		};
+
+		opp-1017600000 {
+			opp-hz = /bits/ 64 <1017600000>;
+			opp-peak-kBps = <2188000 25804800>;
+		};
+
+		opp-1190400000 {
+			opp-hz = /bits/ 64 <1190400000>;
+			opp-peak-kBps = <3072000 30105600>;
+		};
+
+		opp-1497600000 {
+			opp-hz = /bits/ 64 <1497600000>;
+			opp-peak-kBps = <4068000 38707200>;
+		};
+
+		opp-1708800000 {
+			opp-hz = /bits/ 64 <1708800000>;
+			opp-peak-kBps = <6220000 43008000>;
+		};
+
+		opp-1900800000 {
+			opp-hz = /bits/ 64 <1900800000>;
+			opp-peak-kBps = <7216000 43622400>;
+		};
+
+		opp-2208000000 {
+			opp-hz = /bits/ 64 <2208000000>;
+			opp-peak-kBps = <7216000 43622400>;
+		};
+	};
+
 	pmu-a55 {
 		compatible = "arm,cortex-a55-pmu";
 		interrupts = <GIC_PPI 5 IRQ_TYPE_LEVEL_HIGH &ppi_cluster0>;
@@ -1820,6 +1933,33 @@ frame@f42d000 {
 				status = "disabled";
 			};
 		};
+
+		epss_l3: interconnect@fd90000 {
+			compatible = "qcom,shikra-epss-l3";
+			reg = <0x0 0x0fd90000 0x0 0x1000>;
+			clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>, <&gcc GPLL0>;
+			clock-names = "xo", "alternate";
+			#interconnect-cells = <1>;
+		};
+
+		cpufreq_hw: cpufreq@fd91000 {
+			compatible = "qcom,shikra-epss";
+			reg = <0x0 0x0fd91000 0x0 0x1000>,
+			      <0x0 0x0fd92000 0x0 0x1000>;
+			reg-names = "freq-domain0",
+				    "freq-domain1";
+
+			clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>, <&gcc GPLL0>;
+			clock-names = "xo", "alternate";
+
+			interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH 0>;
+			interrupt-names = "dcvsh-irq-0",
+					  "dcvsh-irq-1";
+
+			#freq-domain-cells = <1>;
+			#clock-cells = <1>;
+		};
 	};
 
 	timer {

-- 
2.34.1