linux-kernel - [PATCH 02/12] arm64: dts: qcom: sc7280: Supply clock from cpufreq node to CPUs

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Message-Id: <20230215065520.5535-3-manivannan.sadhasivam@linaro.org>
Date:   Wed, 15 Feb 2023 12:25:13 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     andersson@...nel.org
Cc:     konrad.dybcio@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        viresh.kumar@...aro.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH 02/12] arm64: dts: qcom: sc7280: Supply clock from cpufreq node to CPUs

Qualcomm platforms making use of CPUFreq HW Engine (EPSS/OSM) supply clocks
to the CPU cores. But this relationship is not represented in DTS so far.

So let's make cpufreq node as the clock provider and CPU nodes as the
consumers. The clock index for each CPU node is based on the frequency
domain index.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 arch/arm64/boot/dts/qcom/sc7280.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
index bdcb74925313..d9b6e028cdac 100644
--- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
@@ -168,6 +168,7 @@ CPU0: cpu@0 {
 			device_type = "cpu";
 			compatible = "qcom,kryo";
 			reg = <0x0 0x0>;
+			clocks = <&cpufreq_hw 0>;
 			enable-method = "psci";
 			cpu-idle-states = <&LITTLE_CPU_SLEEP_0
 					   &LITTLE_CPU_SLEEP_1
@@ -193,6 +194,7 @@ CPU1: cpu@100 {
 			device_type = "cpu";
 			compatible = "qcom,kryo";
 			reg = <0x0 0x100>;
+			clocks = <&cpufreq_hw 0>;
 			enable-method = "psci";
 			cpu-idle-states = <&LITTLE_CPU_SLEEP_0
 					   &LITTLE_CPU_SLEEP_1
@@ -214,6 +216,7 @@ CPU2: cpu@200 {
 			device_type = "cpu";
 			compatible = "qcom,kryo";
 			reg = <0x0 0x200>;
+			clocks = <&cpufreq_hw 0>;
 			enable-method = "psci";
 			cpu-idle-states = <&LITTLE_CPU_SLEEP_0
 					   &LITTLE_CPU_SLEEP_1
@@ -235,6 +238,7 @@ CPU3: cpu@300 {
 			device_type = "cpu";
 			compatible = "qcom,kryo";
 			reg = <0x0 0x300>;
+			clocks = <&cpufreq_hw 0>;
 			enable-method = "psci";
 			cpu-idle-states = <&LITTLE_CPU_SLEEP_0
 					   &LITTLE_CPU_SLEEP_1
@@ -256,6 +260,7 @@ CPU4: cpu@400 {
 			device_type = "cpu";
 			compatible = "qcom,kryo";
 			reg = <0x0 0x400>;
+			clocks = <&cpufreq_hw 1>;
 			enable-method = "psci";
 			cpu-idle-states = <&BIG_CPU_SLEEP_0
 					   &BIG_CPU_SLEEP_1
@@ -277,6 +282,7 @@ CPU5: cpu@500 {
 			device_type = "cpu";
 			compatible = "qcom,kryo";
 			reg = <0x0 0x500>;
+			clocks = <&cpufreq_hw 1>;
 			enable-method = "psci";
 			cpu-idle-states = <&BIG_CPU_SLEEP_0
 					   &BIG_CPU_SLEEP_1
@@ -298,6 +304,7 @@ CPU6: cpu@600 {
 			device_type = "cpu";
 			compatible = "qcom,kryo";
 			reg = <0x0 0x600>;
+			clocks = <&cpufreq_hw 1>;
 			enable-method = "psci";
 			cpu-idle-states = <&BIG_CPU_SLEEP_0
 					   &BIG_CPU_SLEEP_1
@@ -319,6 +326,7 @@ CPU7: cpu@700 {
 			device_type = "cpu";
 			compatible = "qcom,kryo";
 			reg = <0x0 0x700>;
+			clocks = <&cpufreq_hw 2>;
 			enable-method = "psci";
 			cpu-idle-states = <&BIG_CPU_SLEEP_0
 					   &BIG_CPU_SLEEP_1
@@ -5337,6 +5345,7 @@ cpufreq_hw: cpufreq@...91000 {
 			clocks = <&rpmhcc RPMH_CXO_CLK>, <&gcc GCC_GPLL0>;
 			clock-names = "xo", "alternate";
 			#freq-domain-cells = <1>;
+			#clock-cells = <1>;
 		};
 	};
 
-- 
2.25.1