linux-kernel - [PATCH 2/2] arm64: dts: qcom: Add cpu scaling clock node

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Message-ID: <20241108-qcs615-mm-dt-nodes-v1-2-b2669cac0624@quicinc.com>
Date: Fri, 8 Nov 2024 11:54:05 +0530
From: Taniya Das <quic_tdas@...cinc.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
CC: Ajit Pandey <quic_ajipan@...cinc.com>,
        Imran Shaik
	<quic_imrashai@...cinc.com>,
        Jagadeesh Kona <quic_jkona@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Taniya Das <quic_tdas@...cinc.com>
Subject: [PATCH 2/2] arm64: dts: qcom: Add cpu scaling clock node

Add cpufreq-hw node to support cpu frequency scaling.

Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
---
 arch/arm64/boot/dts/qcom/qcs615.dtsi | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi b/arch/arm64/boot/dts/qcom/qcs615.dtsi
index 8c98ac77dc5c665ef296e65ac76c1b59be485abb..2c61da790e78b131e454991c968ece40dd5ca56d 100644
--- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
@@ -33,6 +33,8 @@ cpu0: cpu@0 {
 			power-domains = <&cpu_pd0>;
 			power-domain-names = "psci";
 			next-level-cache = <&l2_0>;
+			clocks = <&cpufreq_hw 0>;
+			qcom,freq-domain = <&cpufreq_hw 0>;
 			#cooling-cells = <2>;
 
 			l2_0: l2-cache {
@@ -51,6 +53,8 @@ cpu1: cpu@100 {
 			power-domains = <&cpu_pd1>;
 			power-domain-names = "psci";
 			next-level-cache = <&l2_100>;
+			clocks = <&cpufreq_hw 0>;
+			qcom,freq-domain = <&cpufreq_hw 0>;
 
 			l2_100: l2-cache {
 			      compatible = "cache";
@@ -68,6 +72,8 @@ cpu2: cpu@200 {
 			power-domains = <&cpu_pd2>;
 			power-domain-names = "psci";
 			next-level-cache = <&l2_200>;
+			clocks = <&cpufreq_hw 0>;
+			qcom,freq-domain = <&cpufreq_hw 0>;
 
 			l2_200: l2-cache {
 			      compatible = "cache";
@@ -85,6 +91,8 @@ cpu3: cpu@300 {
 			power-domains = <&cpu_pd3>;
 			power-domain-names = "psci";
 			next-level-cache = <&l2_300>;
+			clocks = <&cpufreq_hw 0>;
+			qcom,freq-domain = <&cpufreq_hw 0>;
 
 			l2_300: l2-cache {
 			      compatible = "cache";
@@ -102,6 +110,8 @@ cpu4: cpu@400 {
 			power-domains = <&cpu_pd4>;
 			power-domain-names = "psci";
 			next-level-cache = <&l2_400>;
+			clocks = <&cpufreq_hw 0>;
+			qcom,freq-domain = <&cpufreq_hw 0>;
 
 			l2_400: l2-cache {
 			      compatible = "cache";
@@ -119,6 +129,8 @@ cpu5: cpu@500 {
 			power-domains = <&cpu_pd5>;
 			power-domain-names = "psci";
 			next-level-cache = <&l2_500>;
+			clocks = <&cpufreq_hw 0>;
+			qcom,freq-domain = <&cpufreq_hw 0>;
 
 			l2_500: l2-cache {
 			      compatible = "cache";
@@ -136,6 +148,8 @@ cpu6: cpu@600 {
 			power-domains = <&cpu_pd6>;
 			power-domain-names = "psci";
 			next-level-cache = <&l2_600>;
+			clocks = <&cpufreq_hw 1>;
+			qcom,freq-domain = <&cpufreq_hw 1>;
 			#cooling-cells = <2>;
 
 			l2_600: l2-cache {
@@ -154,6 +168,8 @@ cpu7: cpu@700 {
 			power-domains = <&cpu_pd7>;
 			power-domain-names = "psci";
 			next-level-cache = <&l2_700>;
+			clocks = <&cpufreq_hw 1>;
+			qcom,freq-domain = <&cpufreq_hw 1>;
 
 			l2_700: l2-cache {
 			      compatible = "cache";
@@ -729,6 +745,19 @@ rpmhpd_opp_turbo_l1: opp-9 {
 		};
 	};
 
+	cpufreq_hw: cpufreq@...23000 {
+		compatible = "qcom,cpufreq-hw";
+		reg = <0 0x18323000 0 0x1400>,
+		      <0 0x18325800 0 0x1400>;
+		reg-names = "freq-domain0", "freq-domain1";
+
+		clocks = <&rpmhcc RPMH_CXO_CLK>, <&gcc GPLL0>;
+		clock-names = "xo", "alternate";
+
+		#freq-domain-cells = <1>;
+		#clock-cells = <1>;
+	};
+
 	arch_timer: timer {
 		compatible = "arm,armv8-timer";
 		interrupts = <GIC_PPI 1 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,

-- 
2.45.2