[PATCH v2 3/4] arm64: dts: qcom: Add IMDT QCS8550 SoM

From: William Bright

Date: Tue May 05 2026 - 16:11:32 EST

The IMDT QCS8550 SoM is a System-on-Module from IMD Technologies Ltd
built around the Qualcomm QCS8550 SoC. It is intended to be soldered
onto a carrier board that supplies VPH_PWR and exposes the off-module
peripherals.

Add qcs8550-imdt-som.dtsi describing the SoM's PMICs (PM8550,
PM8550VE, PM8550VS, PMK8550) and the apps_rsc PMIC outputs.
Compared to other SM8550/QCS8550 boards, this SoM excludes the
PM8550B charger PMIC.

Assisted-by: Claude:claude-opus-4.7
Signed-off-by: William Bright <william.bright@xxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/qcs8550-imdt-som.dtsi | 319 +++++++++++++++++++++++++
1 file changed, 319 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs8550-imdt-som.dtsi b/arch/arm64/boot/dts/qcom/qcs8550-imdt-som.dtsi
new file mode 100644
index 000000000000..816cbd254dea
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/qcs8550-imdt-som.dtsi
@@ -0,0 +1,319 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) 2026 IMD Technologies Ltd
+ */
+
+#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
+#include "qcs8550.dtsi"
+#include "pm8550.dtsi"
+#define PMK8550VE_SID 5
+#include "pm8550ve.dtsi"
+#include "pm8550vs.dtsi"
+#include "pmk8550.dtsi"
+
+&apps_rsc {
+ regulators-0 {
+ compatible = "qcom,pm8550-rpmh-regulators";
+ qcom,pmic-id = "b";
+
+ vdd-l1-l4-l10-supply = <&vreg_s6g_1p86>;
+ vdd-l2-l13-l14-supply = <&vreg_bob1>;
+ vdd-l3-supply = <&vreg_s4g_1p25>;
+ vdd-l5-l16-supply = <&vreg_bob1>;
+ vdd-l6-l7-supply = <&vreg_bob1>;
+ vdd-l8-l9-supply = <&vreg_bob1>;
+ vdd-l11-supply = <&vreg_s4g_1p25>;
+ vdd-l12-supply = <&vreg_s6g_1p86>;
+ vdd-l15-supply = <&vreg_s6g_1p86>;
+ vdd-l17-supply = <&vreg_bob2>;
+
+ /*
+ * PMIC outputs whose testpoints lack capacitors are
+ * omitted to prevent accidental use:
+ * L1B_1P8, L4B_1P8, L6B_1P8, L7B_1P8, L8B_1P8,
+ * L13B_3P0, L14B_3P2.
+ * Other outputs are unused.
+ */
+ vreg_bob1: bob1 {
+ regulator-name = "vreg_bob1";
+ regulator-min-microvolt = <3296000>;
+ regulator-max-microvolt = <3960000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_bob2: bob2 {
+ regulator-name = "vreg_bob2";
+ regulator-min-microvolt = <2720000>;
+ regulator-max-microvolt = <3960000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l5b_3p1: ldo5 {
+ regulator-name = "vreg_l5b_3p1";
+ regulator-min-microvolt = <3104000>;
+ regulator-max-microvolt = <3104000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l15b_1p8: ldo15 {
+ regulator-name = "vreg_l15b_1p8";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l17b_2p5: ldo17 {
+ regulator-name = "vreg_l17b_2p5";
+ regulator-min-microvolt = <2504000>;
+ regulator-max-microvolt = <2504000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+ };
+
+ regulators-1 {
+ compatible = "qcom,pm8550vs-rpmh-regulators";
+ qcom,pmic-id = "c";
+
+ vdd-l1-supply = <&vreg_s4g_1p25>;
+ vdd-l2-supply = <&vreg_s4e_0p95>;
+ vdd-l3-supply = <&vreg_s4e_0p95>;
+
+ vreg_l3c_0p9: ldo3 {
+ regulator-name = "vreg_l3c_0p9";
+ regulator-min-microvolt = <880000>;
+ regulator-max-microvolt = <912000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+ };
+
+ regulators-2 {
+ compatible = "qcom,pm8550vs-rpmh-regulators";
+ qcom,pmic-id = "d";
+
+ vdd-l1-supply = <&vreg_s4e_0p95>;
+ vdd-l2-supply = <&vreg_s4e_0p95>;
+ vdd-l3-supply = <&vreg_s4e_0p95>;
+
+ vreg_l1d_0p88: ldo1 {
+ regulator-name = "vreg_l1d_0p88";
+ regulator-min-microvolt = <880000>;
+ regulator-max-microvolt = <920000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ /* ldo2 supplies SM8550 VDD_LPI_MX */
+ };
+
+ regulators-3 {
+ compatible = "qcom,pm8550vs-rpmh-regulators";
+ qcom,pmic-id = "e";
+
+ vdd-l1-supply = <&vreg_s4e_0p95>;
+ vdd-l2-supply = <&vreg_s4e_0p95>;
+ vdd-l3-supply = <&vreg_s4g_1p25>;
+
+ vreg_s4e_0p95: smps4 {
+ regulator-name = "vreg_s4e_0p95";
+ regulator-min-microvolt = <904000>;
+ regulator-max-microvolt = <984000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_s5e_1p08: smps5 {
+ regulator-name = "vreg_s5e_1p08";
+ regulator-min-microvolt = <1080000>;
+ regulator-max-microvolt = <1120000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l1e_0p88: ldo1 {
+ regulator-name = "vreg_l1e_0p88";
+ regulator-min-microvolt = <880000>;
+ regulator-max-microvolt = <880000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l2e_0p9: ldo2 {
+ regulator-name = "vreg_l2e_0p9";
+ regulator-min-microvolt = <904000>;
+ regulator-max-microvolt = <970000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l3e_1p2: ldo3 {
+ regulator-name = "vreg_l3e_1p2";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+ };
+
+ regulators-4 {
+ compatible = "qcom,pm8550ve-rpmh-regulators";
+ qcom,pmic-id = "f";
+
+ vdd-l1-supply = <&vreg_s4e_0p95>;
+ vdd-l2-supply = <&vreg_s4e_0p95>;
+ vdd-l3-supply = <&vreg_s4e_0p95>;
+
+ vreg_s4f_0p5: smps4 {
+ regulator-name = "vreg_s4f_0p5";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <700000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l1f_0p9: ldo1 {
+ regulator-name = "vreg_l1f_0p9";
+ regulator-min-microvolt = <912000>;
+ regulator-max-microvolt = <912000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l2f_0p88: ldo2 {
+ regulator-name = "vreg_l2f_0p88";
+ regulator-min-microvolt = <880000>;
+ regulator-max-microvolt = <912000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l3f_0p88: ldo3 {
+ regulator-name = "vreg_l3f_0p88";
+ regulator-min-microvolt = <880000>;
+ regulator-max-microvolt = <912000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+ };
+
+ regulators-5 {
+ compatible = "qcom,pm8550vs-rpmh-regulators";
+ qcom,pmic-id = "g";
+
+ vdd-l1-supply = <&vreg_s4g_1p25>;
+ vdd-l2-supply = <&vreg_s4g_1p25>;
+ vdd-l3-supply = <&vreg_s4g_1p25>;
+
+ vreg_s1g_1p25: smps1 {
+ regulator-name = "vreg_s1g_1p25";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1300000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_s2g_0p85: smps2 {
+ regulator-name = "vreg_s2g_0p85";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <1000000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_s3g_0p8: smps3 {
+ regulator-name = "vreg_s3g_0p8";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <1004000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_s4g_1p25: smps4 {
+ regulator-name = "vreg_s4g_1p25";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1352000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_s5g_0p85: smps5 {
+ regulator-name = "vreg_s5g_0p85";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <1004000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_s6g_1p86: smps6 {
+ regulator-name = "vreg_s6g_1p86";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <2000000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l1g_1p2: ldo1 {
+ regulator-name = "vreg_l1g_1p2";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l3g_1p2: ldo3 {
+ regulator-name = "vreg_l3g_1p2";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-allow-set-load;
+ regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+ RPMH_REGULATOR_MODE_HPM>;
+ };
+ };
+};
+
+&pm8550vs_c {
+ status = "okay";
+};
+
+&pm8550vs_d {
+ status = "okay";
+};
+
+&pm8550vs_d_gpios {
+ status = "okay";
+};
+
+&pm8550vs_e {
+ status = "okay";
+};
+
+&pm8550vs_g {
+ status = "okay";
+};
+
+&sleep_clk {
+ clock-frequency = <32764>;
+};
+
+&xo_board {
+ clock-frequency = <76800000>;
+};

--
2.43.0