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ARM systems don’t have the whole ACPI thing to describe what hardware is where. Linux has to bodge together its view of the system with a devicetree instead. If you don’t know what device IP blocks are integrated into the SOC (and locked behind an NDA), good luck blindly guessing. You don’t even get EFI booting, you get shit like “the rpi gpu runs its own proprietary bootloader lol”.
ARM systems don’t have the whole ACPI thing to describe what hardware is where. Linux has to bodge together its view of the system with a devicetree instead. If you don’t know what device IP blocks are integrated into the SOC (and locked behind an NDA), good luck blindly guessing. You don’t even get EFI booting, you get shit like “the rpi gpu runs its own proprietary bootloader lol”.