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These days we have device tree. I am wondering where can I see the device tree in my PC - i.e. Debian - Release: 9.11.

When I look at the kernel config, I don't see the device tree. How come device tree isn't there in my PC.

vi  /boot/config-4.9.0-3-amd64
tannoy connect
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x86 PCs don’t use static device trees, they use other mechanisms to enumerate installed hardware (ACPI tables, PCI enumeration, USB...). So you won’t find a corresponding .dtb file in /boot.

Stephen Kitt
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  • what do they use? I know that chrome books uses the device tree. For example, here is there recent bug - https://bugs.chromium.org/p/chromium/issues/detail?id=1135157 – tannoy connect Oct 07 '20 at 05:16
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    I think you’re reading too much into that bug as far as DT is concerned. On x86, the kernel knows about some hard-coded hardware and probes for it (e.g. the 8042), everything else is discovered using ACPI and bus enumeration (PCI, USB...). – Stephen Kitt Oct 07 '20 at 05:20
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    Yup, as user431397 says, some x86 systems use DT. I’m answering for PCs only since that’s what you asked about. – Stephen Kitt Oct 07 '20 at 05:45