Acpi Prp0001 0 Jun 2026

Newer kernels contain more compatible strings.

: PRP0001 acts as a "fallback" or "generic" Hardware ID (HID). When the OS encounters this ID, it knows not to look for a standard ACPI driver match immediately. Instead, it looks for a (Device Specific Data) property named compatible within the ACPI table. Driver Matching compatible string is found (e.g., "google,eve-audio"

When Linux encounters _HID = "PRP0001" , the ACPI subsystem bypasses standard ACPI matching and looks at the _DSD (Device-Specific Data) package. Within _DSD , a special UUID identifies the "Device Properties" section. Inside that section, a compatible property provides one or more strings — exactly like a Device Tree compatible statement:

It takes the string value (e.g., "acme,sensor-x" ) and searches the of_match_table of available Linux drivers, acting as if the device was described in a Device Tree, not ACPI. acpi prp0001 0

: You can use the same driver code for both DT-based systems (like Raspberry Pi) and ACPI-based systems (like x86 laptops) without modification. Flexibility

Despite the challenges, PRP0001 remains a standard kernel feature and is likely here to stay. It is continuously maintained and improved. For instance, when the Rust language was introduced to the kernel, patches were required to ensure that Rust-based ACPI drivers could correctly obtain match data for PRP0001 devices. This shows that the core mechanism is being actively supported in new kernel development efforts.

In the world of ACPI (Advanced Configuration and Power Interface), PRP0001 is a special "placeholder" ID used by Linux to link hardware devices to their drivers using data instead of traditional ACPI tables. When you see this ID in Windows, it usually means: Newer kernels contain more compatible strings

Device (SNSA) Name (_HID, "PRP0001") Name (_DSD, Package () ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () Package () "compatible", "vendor,sensor-name", Package () "reg", 0x48, // I2C Address // ... other properties ) Use code with caution.

Yes – but with caveats. The Linux kernel has shifted toward more ACPI-native drivers for embedded peripherals. Many Intel SoCs now define proper ACPI IDs (e.g., INT34D3 for HID over I2C). However:

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I2cSerialBusV2 (0x48, ControllerInitiated, 400000, AddressingMode7Bit, "\\_SB.PCI0.I2C1", 0x00, ResourceConsumer, , Exclusive,) ) Return (SBUF)

ACPI PRP0001 is a device ID that represents a Platform Resource Processor (PRP) device. The PRP is a type of ACPI device that provides a way to abstract platform-specific resources, such as power management, thermal management, and other system functionalities. The "0001" in PRP0001 refers to a specific device instance.

If the directory doesn’t exist, the ACPI table might be malformed or the device not present. Instead, it looks for a (Device Specific Data)

Name (_HID, "PRP0001") Name (_DSD, Package () ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () Package () "compatible", "honeywell,hmc5843" )

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