Suppose a device has both a PRP0001 entry (to load a DT driver) and a legacy PNPXXXX HID (for an older ACPI driver). The kernel may prefer the DT driver via PRP0001. Disabling PRP0001 forces the kernel to fall back to the native ACPI driver – useful for performance comparison or bug workarounds.
To fully understand why this ID exists, it helps to understand the historical divide between two hardware description architectures:
You might see acpi prp0001 0 on:
early_param("acpi_prp0001", acpi_prp0001_setup);
0xEE.
For (like Pixelbooks), look for the Google Audio SPI Device driver .
The special Hardware ID (HID) PRP0001 (often represented as ACPI\PRP0001\0 ) serves as a crucial bridge, allowing ACPI-enumerated systems to use device drivers that were originally designed for Device Tree, particularly for I2C and SPI devices. What is acpi prp0001 0 ? acpi prp0001 0
Install the package and reboot your device to allow the I2C serial buses to automatically claim the sub-devices. Method 2: Manual Driver Injection (Chromebooks & Laptops)