arm64: dts: qcom: sm8450: add cpufreq support

The change adds a description of a SM8450 cpufreq-epss controller and
references to it from CPU nodes.
Signed-off-by: NVladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Signed-off-by: NVinod Koul <vkoul@kernel.org>
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211215043440.605624-11-vkoul@kernel.org

arch/arm64/boot/dts/qcom/sm8450.dtsi

@@ -44,6 +44,7 @@
 			next-level-cache = <&L2_0>;
 			power-domains = <&CPU_PD0>;
 			power-domain-names = "psci";
+			qcom,freq-domain = <&cpufreq_hw 0>;
 			L2_0: l2-cache {
 			      compatible = "cache";
 			      next-level-cache = <&L3_0>;
@@ -61,6 +62,7 @@
 			next-level-cache = <&L2_100>;
 			power-domains = <&CPU_PD1>;
 			power-domain-names = "psci";
+			qcom,freq-domain = <&cpufreq_hw 0>;
 			L2_100: l2-cache {
 			      compatible = "cache";
 			      next-level-cache = <&L3_0>;
@@ -75,6 +77,7 @@
 			next-level-cache = <&L2_200>;
 			power-domains = <&CPU_PD2>;
 			power-domain-names = "psci";
+			qcom,freq-domain = <&cpufreq_hw 0>;
 			L2_200: l2-cache {
 			      compatible = "cache";
 			      next-level-cache = <&L3_0>;
@@ -89,6 +92,7 @@
 			next-level-cache = <&L2_300>;
 			power-domains = <&CPU_PD3>;
 			power-domain-names = "psci";
+			qcom,freq-domain = <&cpufreq_hw 0>;
 			L2_300: l2-cache {
 			      compatible = "cache";
 			      next-level-cache = <&L3_0>;
@@ -103,6 +107,7 @@
 			next-level-cache = <&L2_400>;
 			power-domains = <&CPU_PD4>;
 			power-domain-names = "psci";
+			qcom,freq-domain = <&cpufreq_hw 1>;
 			L2_400: l2-cache {
 			      compatible = "cache";
 			      next-level-cache = <&L3_0>;
@@ -117,6 +122,7 @@
 			next-level-cache = <&L2_500>;
 			power-domains = <&CPU_PD5>;
 			power-domain-names = "psci";
+			qcom,freq-domain = <&cpufreq_hw 1>;
 			L2_500: l2-cache {
 			      compatible = "cache";
 			      next-level-cache = <&L3_0>;
@@ -132,6 +138,7 @@
 			next-level-cache = <&L2_600>;
 			power-domains = <&CPU_PD6>;
 			power-domain-names = "psci";
+			qcom,freq-domain = <&cpufreq_hw 1>;
 			L2_600: l2-cache {
 			      compatible = "cache";
 			      next-level-cache = <&L3_0>;
@@ -146,6 +153,7 @@
 			next-level-cache = <&L2_700>;
 			power-domains = <&CPU_PD7>;
 			power-domain-names = "psci";
+			qcom,freq-domain = <&cpufreq_hw 2>;
 			L2_700: l2-cache {
 			      compatible = "cache";
 			      next-level-cache = <&L3_0>;
@@ -867,6 +875,21 @@
 			};
 		};
 
+		cpufreq_hw: cpufreq@17d91000 {
+			compatible = "qcom,sm8450-cpufreq-epss", "qcom,cpufreq-epss";
+			reg = <0 0x17d91000 0 0x1000>,
+			      <0 0x17d92000 0 0x1000>,
+			      <0 0x17d93000 0 0x1000>;
+			reg-names = "freq-domain0", "freq-domain1", "freq-domain2";
+			clocks = <&rpmhcc RPMH_CXO_CLK>, <&gcc GCC_GPLL0>;
+			clock-names = "xo", "alternate";
+			interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "dcvsh-irq-0", "dcvsh-irq-1", "dcvsh-irq-2";
+			#freq-domain-cells = <1>;
+		};
+
 		ufs_mem_hc: ufshc@1d84000 {
 			compatible = "qcom,sm8450-ufshc", "qcom,ufshc",
 				     "jedec,ufs-2.0";