arm64: dts: qcom: sm4450: Add RPMh power domains support

Add device node for RPMh power domains on Qualcomm SM4450 platform.

Signed-off-by: Ajit Pandey <quic_ajipan@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250417-sm4450_rpmhpd-v1-3-361846750d3a@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: Ajit Pandey

arch/arm64/boot/dts/qcom/sm4450.dtsi

@@ -10,6 +10,8 @@
 #include <dt-bindings/clock/qcom,sm4450-gpucc.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/power/qcom,rpmhpd.h>
+#include <dt-bindings/power/qcom-rpmpd.h>
 #include <dt-bindings/soc/qcom,rpmh-rsc.h>
 
 / {
@@ -591,6 +593,72 @@
 				clocks = <&xo_board>;
 				clock-names = "xo";
 			};
+
+			rpmhpd: power-controller {
+				compatible = "qcom,sm4450-rpmhpd";
+				#power-domain-cells = <1>;
+				operating-points-v2 = <&rpmhpd_opp_table>;
+
+				rpmhpd_opp_table: opp-table {
+					compatible = "operating-points-v2";
+
+					rpmhpd_opp_ret: opp-16 {
+						opp-level = <RPMH_REGULATOR_LEVEL_RETENTION>;
+					};
+
+					rpmhpd_opp_min_svs: opp-48 {
+						opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
+					};
+
+					rpmhpd_opp_low_svs_d1: opp-56 {
+						opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS_D1>;
+					};
+
+					rpmhpd_opp_low_svs: opp-64 {
+						opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+					};
+
+					rpmhpd_opp_low_svs_l1: opp-80 {
+						opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS_L1>;
+					};
+
+					rpmhpd_opp_low_svs_l2: opp-96 {
+						opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS_L2>;
+					};
+
+					rpmhpd_opp_svs: opp-128 {
+						opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
+					};
+
+					rpmhpd_opp_svs_l1: opp-192 {
+						opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
+					};
+
+					rpmhpd_opp_svs_l2: opp-224 {
+						opp-level = <RPMH_REGULATOR_LEVEL_SVS_L2>;
+					};
+
+					rpmhpd_opp_nom: opp-256 {
+						opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
+					};
+
+					rpmhpd_opp_nom_l1: opp-320 {
+						opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
+					};
+
+					rpmhpd_opp_nom_l2: opp-336 {
+						opp-level = <RPMH_REGULATOR_LEVEL_NOM_L2>;
+					};
+
+					rpmhpd_opp_turbo: opp-384 {
+						opp-level = <RPMH_REGULATOR_LEVEL_TURBO>;
+					};
+
+					rpmhpd_opp_turbo_l1: opp-416 {
+						opp-level = <RPMH_REGULATOR_LEVEL_TURBO_L1>;
+					};
+				};
+			};
 		};
 
 		cpufreq_hw: cpufreq@17d91000 {