arm64: dts: qcom: qcm2290: Add LMH node

Add a node for the Limits Management Hardware to ensure it can be
configured by the operating system.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
[Konrad: add commit msg, rebase]
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240308-topic-rb1_lmh-v2-3-bac3914b0fe3@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/qcm2290.dtsi

@@ -1858,7 +1858,7 @@ cpufreq_hw: cpufreq@f521000 {
 			compatible = "qcom,qcm2290-cpufreq-hw", "qcom,cpufreq-hw";
 			reg = <0x0 0x0f521000 0x0 0x1000>;
 			reg-names = "freq-domain0";
-			interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts-extended = <&lmh_cluster 0>;
 			interrupt-names = "dcvsh-irq-0";
 			clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>, <&gcc GPLL0>;
 			clock-names = "xo", "alternate";
@@ -1866,6 +1866,18 @@ cpufreq_hw: cpufreq@f521000 {
 			#freq-domain-cells = <1>;
 			#clock-cells = <1>;
 		};
+
+		lmh_cluster: lmh@f550800 {
+			compatible = "qcom,qcm2290-lmh", "qcom,sm8150-lmh";
+			reg = <0x0 0x0f550800 0x0 0x400>;
+			interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
+			cpus = <&CPU0>;
+			qcom,lmh-temp-arm-millicelsius = <65000>;
+			qcom,lmh-temp-low-millicelsius = <94500>;
+			qcom,lmh-temp-high-millicelsius = <95000>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
 	};
 
 	thermal-zones {