diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 456502aeee49..38d3a4728871 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -71,6 +71,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-xiaomi-beryllium.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sdm850-lenovo-yoga-c630.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8150-hdk.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8150-mtp.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= sa8155p-adp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8250-hdk.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8250-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8350-hdk.dtb
diff --git a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
new file mode 100644
index 000000000000..470d740e060a
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
@@ -0,0 +1,363 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) 2021, Linaro Limited
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
+#include <dt-bindings/gpio/gpio.h>
+#include "sm8150.dtsi"
+#include "pmm8155au_1.dtsi"
+#include "pmm8155au_2.dtsi"
+
+/ {
+	model = "Qualcomm Technologies, Inc. SA8155P ADP";
+	compatible = "qcom,sa8155p-adp";
+
+	aliases {
+		serial0 = &uart2;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	vreg_3p3: vreg_3p3_regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg_3p3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	/*
+	 * Apparently RPMh does not provide support for PM8150 S4 because it
+	 * is always-on; model it as a fixed regulator.
+	 */
+	vreg_s4a_1p8: smps4 {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg_s4a_1p8";
+
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+
+		regulator-always-on;
+		regulator-boot-on;
+
+		vin-supply = <&vreg_3p3>;
+	};
+};
+
+&apps_rsc {
+	pmm8155au-1-rpmh-regulators {
+		compatible = "qcom,pmm8155au-1-rpmh-regulators";
+		qcom,pmic-id = "a";
+
+		vdd-s1-supply = <&vreg_3p3>;
+		vdd-s2-supply = <&vreg_3p3>;
+		vdd-s3-supply = <&vreg_3p3>;
+		vdd-s4-supply = <&vreg_3p3>;
+		vdd-s5-supply = <&vreg_3p3>;
+		vdd-s6-supply = <&vreg_3p3>;
+		vdd-s7-supply = <&vreg_3p3>;
+		vdd-s8-supply = <&vreg_3p3>;
+		vdd-s9-supply = <&vreg_3p3>;
+		vdd-s10-supply = <&vreg_3p3>;
+
+		vdd-l1-l8-l11-supply = <&vreg_s6a_0p92>;
+		vdd-l2-l10-supply = <&vreg_3p3>;
+		vdd-l3-l4-l5-l18-supply = <&vreg_s6a_0p92>;
+		vdd-l6-l9-supply = <&vreg_s6a_0p92>;
+		vdd-l7-l12-l14-l15-supply = <&vreg_s5a_2p04>;
+		vdd-l13-l16-l17-supply = <&vreg_3p3>;
+
+		vreg_s5a_2p04: smps5 {
+			regulator-min-microvolt = <1904000>;
+			regulator-max-microvolt = <2000000>;
+		};
+
+		vreg_s6a_0p92: smps6 {
+			regulator-min-microvolt = <920000>;
+			regulator-max-microvolt = <1128000>;
+		};
+
+		vdda_wcss_pll:
+		vreg_l1a_0p752: ldo1 {
+			regulator-min-microvolt = <752000>;
+			regulator-max-microvolt = <752000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vdda_usb_hs_3p1:
+		vreg_l2a_3p072: ldo2 {
+			regulator-min-microvolt = <3072000>;
+			regulator-max-microvolt = <3072000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l3a_0p8: ldo3 {
+			regulator-min-microvolt = <800000>;
+			regulator-max-microvolt = <800000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vdd_usb_hs_core:
+		vdda_pll_hv_cc_ebi01:
+		vdda_pll_hv_cc_ebi23:
+		vdda_ufs_2ln_core:
+		vdda_ufs_2ln_core:
+		vdda_usb_ss_core:
+		vdda_usb_ss_dp_core_1:
+		vdda_usb_ss_dp_core_2:
+		vdda_sp_sensor:
+		vdda_qlink_lv:
+		vdda_qlink_lv_ck:
+		vdda_qrefs_0p875_5:
+		vreg_l5a_0p88: ldo5 {
+			regulator-min-microvolt = <880000>;
+			regulator-max-microvolt = <880000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l7a_1p8: ldo7 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l10a_2p96: ldo10 {
+			regulator-min-microvolt = <2504000>;
+			regulator-max-microvolt = <2960000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l11a_0p8: ldo11 {
+			regulator-min-microvolt = <800000>;
+			regulator-max-microvolt = <800000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vdd_qfprom:
+		vdd_qfprom_sp:
+		vdda_usb_hs_1p8:
+		vdda_apc_cs_1p8:
+		vdda_gfx_cs_1p8:
+		vddpx_11:
+		vreg_l12a_1p8: ldo12 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l13a_2p7: ldo13 {
+			regulator-min-microvolt = <2704000>;
+			regulator-max-microvolt = <2704000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l15a_1p7: ldo15 {
+			regulator-min-microvolt = <1704000>;
+			regulator-max-microvolt = <1704000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l16a_2p7: ldo16 {
+			regulator-min-microvolt = <2704000>;
+			regulator-max-microvolt = <2960000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l17a_2p96: ldo17 {
+			regulator-min-microvolt = <2504000>;
+			regulator-max-microvolt = <2960000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+	};
+
+	pmm8155au-2-rpmh-regulators {
+		compatible = "qcom,pmm8155au-2-rpmh-regulators";
+		qcom,pmic-id = "c";
+
+		vdd-s1-supply = <&vreg_3p3>;
+		vdd-s2-supply = <&vreg_3p3>;
+		vdd-s3-supply = <&vreg_3p3>;
+		vdd-s4-supply = <&vreg_3p3>;
+		vdd-s5-supply = <&vreg_3p3>;
+		vdd-s6-supply = <&vreg_3p3>;
+		vdd-s7-supply = <&vreg_3p3>;
+		vdd-s8-supply = <&vreg_3p3>;
+		vdd-s9-supply = <&vreg_3p3>;
+		vdd-s10-supply = <&vreg_3p3>;
+
+		vdd-l1-l8-l11-supply = <&vreg_s4c_1p352>;
+		vdd-l2-l10-supply = <&vreg_3p3>;
+		vdd-l3-l4-l5-l18-supply = <&vreg_s4c_1p352>;
+		vdd-l6-l9-supply = <&vreg_s6c_1p128>;
+		vdd-l7-l12-l14-l15-supply = <&vreg_s5c_2p04>;
+		vdd-l13-l16-l17-supply = <&vreg_3p3>;
+
+		vreg_s4c_1p352: smps4 {
+			regulator-min-microvolt = <1352000>;
+			regulator-max-microvolt = <1352000>;
+		};
+
+		vreg_s5c_2p04: smps5 {
+			regulator-min-microvolt = <1904000>;
+			regulator-max-microvolt = <2000000>;
+		};
+
+		vreg_s6c_1p128: smps6 {
+			regulator-min-microvolt = <1128000>;
+			regulator-max-microvolt = <1128000>;
+		};
+
+		vdda_wcss_adcdac_1:
+		vdda_wcss_adcdac_2:
+		vreg_l1c_1p304: ldo1 {
+			regulator-min-microvolt = <1304000>;
+			regulator-max-microvolt = <1304000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vddpx_5:
+		vreg_l2c_1p808: ldo2 {
+			regulator-min-microvolt = <1704000>;
+			regulator-max-microvolt = <2928000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vddpx_10:
+		vreg_l5c_1p2: ldo5 {
+			regulator-min-microvolt = <1200000>;
+			regulator-max-microvolt = <1200000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l7c_1p8: ldo7 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vdda_qlink_hv_ck:
+		vdda_pcie_1ln_pll_1p2:
+		vdda_pcie_2ln_pll_1p2:
+		vdda_hv_refgen0:
+		vdda_ufs_2ln_1p2:
+		vdda_usb_ss_1p2:
+		vdda_usb_ss_dp_1p2:
+		vdda_csi_1p2:
+		vdda_dsi_1p2:
+		vreg_l8c_1p2: ldo8 {
+			regulator-min-microvolt = <1200000>;
+			regulator-max-microvolt = <1200000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l10c_3p3: ldo10 {
+			regulator-min-microvolt = <3000000>;
+			regulator-max-microvolt = <3312000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l11c_0p8: ldo11 {
+			regulator-min-microvolt = <800000>;
+			regulator-max-microvolt = <800000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vddpx_6:
+		vreg_l12c_1p808: ldo12 {
+			regulator-min-microvolt = <1704000>;
+			regulator-max-microvolt = <2928000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vddpx_2:
+		vreg_l13c_2p96: ldo13 {
+			regulator-min-microvolt = <2504000>;
+			regulator-max-microvolt = <2960000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l15c_1p9: ldo15 {
+			regulator-min-microvolt = <1704000>;
+			regulator-max-microvolt = <2928000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l16c_3p008: ldo16 {
+			regulator-min-microvolt = <3008000>;
+			regulator-max-microvolt = <3008000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vdda_pcie_1ln_core:
+		vdda_pcie_2ln_core:
+		vdda_csi_0_0p9:
+		vdda_csi_1_0p9:
+		vdda_csi_2_0p9:
+		vdda_csi_3_0p9:
+		vreg_l18c_0p88: ldo18 {
+			regulator-min-microvolt = <880000>;
+			regulator-max-microvolt = <880000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+	};
+};
+
+&tlmm {
+	gpio-reserved-ranges = <0 4>;
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&ufs_mem_hc {
+	status = "okay";
+
+	reset-gpios = <&tlmm 175 GPIO_ACTIVE_LOW>;
+
+	vcc-supply = <&vreg_l10a_2p96>;
+	vcc-max-microamp = <750000>;
+	vccq-supply = <&vreg_l5c_1p2>;
+	vccq-max-microamp = <700000>;
+	vccq2-supply = <&vreg_s4a_1p8>;
+	vccq2-max-microamp = <750000>;
+};
+
+&ufs_mem_phy {
+	status = "okay";
+
+	vdda-phy-supply = <&vreg_l8c_1p2>;
+	vdda-max-microamp = <87100>;
+	vdda-pll-supply = <&vreg_l5a_0p88>;
+	vdda-pll-max-microamp = <18300>;
+};
+
+
+&usb_1_hsphy {
+	status = "okay";
+	vdda-pll-supply = <&vdd_usb_hs_core>;
+	vdda33-supply = <&vdda_usb_hs_3p1>;
+	vdda18-supply = <&vdda_usb_hs_1p8>;
+};
+
+&usb_1_qmpphy {
+	status = "okay";
+	vdda-phy-supply = <&vreg_l8c_1p2>;
+	vdda-pll-supply = <&vdda_usb_ss_dp_core_1>;
+};
+
+&usb_1 {
+	status = "okay";
+};
+
+&usb_1_dwc3 {
+	dr_mode = "peripheral";
+};
+
+&qupv3_id_1 {
+	status = "okay";
+};
