power: domain: Add Apple PMP reporting driver

MAINTAINERS

@@ -142,6 +142,7 @@ F:	drivers/pci/pcie_apple.c
 F:	drivers/phy/phy-apple-atc.c
 F:	drivers/pinctrl/pinctrl-apple.c
 F:	drivers/power/domain/apple-pmgr.c
+F:	drivers/power/domain/apple-pmp-report.c
 F:	drivers/spi/apple_spi.c
 F:	drivers/usb/host/xhci-pci-asmedia.c
 F:	drivers/watchdog/apple_wdt.c

drivers/power/domain/Kconfig

@@ -18,6 +18,19 @@ config APPLE_PMGR_POWER_DOMAIN
 	  This driver is needed to power on parts of the SoC that have
 	  not been powered on by previous boot stages.
 
+config APPLE_PMP_REPORT_POWER_DOMAIN
+	bool "Enable the Apple PMP reporting power domain driver"
+	depends on POWER_DOMAIN
+	default y if ARCH_APPLE
+	help
+	  Enable support for reporting power states to the Apple Power
+	  Management Processor (PMP).
+
+	  This is a dummy driver since the PMP is entirely optional and
+	  enabling is not necessary during boot. However, it allows for
+	  devices bound to a PMGR domain through a PMP reporting domain to be
+	  powered on.
+
 config AGILEX5_PMGR_POWER_DOMAIN
 	bool "Enable the Agilex5 PMGR power domain driver"
 	depends on SPL_POWER_DOMAIN && TARGET_SOCFPGA_SOC64

drivers/power/domain/Makefile

@@ -5,6 +5,7 @@
 
 obj-$(CONFIG_$(PHASE_)POWER_DOMAIN) += power-domain-uclass.o
 obj-$(CONFIG_APPLE_PMGR_POWER_DOMAIN) += apple-pmgr.o
+obj-$(CONFIG_APPLE_PMP_REPORT_POWER_DOMAIN) += apple-pmp-report.o
 obj-$(CONFIG_AGILEX5_PMGR_POWER_DOMAIN) += altr-pmgr-agilex5.o
 obj-$(CONFIG_BCM6328_POWER_DOMAIN) += bcm6328-power-domain.o
 obj-$(CONFIG_IMX8_POWER_DOMAIN) += imx8-power-domain-legacy.o imx8-power-domain.o

drivers/power/domain/apple-pmp-report.c

@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2026 Yureka <yureka@cyberchaos.dev>
+ */
+
+#include <dm.h>
+#include <power-domain-uclass.h>
+
+static const struct udevice_id apple_pmp_report_ids[] = {
+	{ .compatible = "apple,t6000-pmp-v2-report" },
+	{ .compatible = "apple,t6020-pmp-v2-report" },
+	{ .compatible = "apple,t6030-pmp-v2-report" },
+	{ .compatible = "apple,t8112-pmp-v2-report" },
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(apple_pmp_report) = {
+	.name = "apple_pmp_report",
+	.id = UCLASS_NOP,
+	.of_match = apple_pmp_report_ids,
+	.bind = dm_scan_fdt_dev,
+};
+
+static int apple_pmp_report_entry_of_xlate(struct power_domain *power_domain,
+					   struct ofnode_phandle_args *args)
+{
+	return 0;
+}
+
+static const struct udevice_id apple_pmp_report_entry_ids[] = {
+	{ .compatible = "apple,t6000-pmp-v2-report-entry" },
+	{ .compatible = "apple-pmp-report-entry" },
+	{ /* sentinel */ }
+};
+
+struct power_domain_ops apple_pmp_report_entry_ops = {
+	.of_xlate = apple_pmp_report_entry_of_xlate,
+};
+
+U_BOOT_DRIVER(apple_pmp_report_entry) = {
+	.name = "apple_pmp_report_entry",
+	.id = UCLASS_POWER_DOMAIN,
+	.of_match = apple_pmp_report_entry_ids,
+	.ops = &apple_pmp_report_entry_ops,
+};