[PATCH 05/16] arm: qemu: Add a devicetree file for qemu_arm64

Tom Rini trini at konsulko.com
Wed Oct 27 16:56:53 CEST 2021

On Wed, Oct 27, 2021 at 03:44:08PM +0100, Alex Bennée wrote:
> François Ozog <francois.ozog at linaro.org> writes:
> > Hi Simon
> >
> > The only place I could agree with this file presence is in the documentation directory, not in dts. It creates a mental picture  for the reader
> > an entirely bad mind scheme around Qemu and DT.
> >
> > And even in a documentation directory I would place a bug warning: don’t use this with any kernel , Qemu generates a DT dynamically
> > based on cpu, memory and devices specified at the command line.
> Certainly for the arm, aarch64 and riscv "virt" machines you should
> always use the QEMU generated DTB. I'm not entirely clear what a
> qemu_arm and qemu_arm64 def targets are meant to be in this context.

Agreed.  We cannot include random device trees in U-Boot for devices
that generate their own at run time or otherwise have the source of
truth elsewhere.

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