Messages in this thread | | | From | Arnd Bergmann <> | Date | Thu, 18 Aug 2022 14:06:40 +0200 | Subject | Re: [PATCH v3 2/2] ARM: dts: aspeed: Add device tree for Ampere's Mt. Mitchell BMC |
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On Thu, Aug 18, 2022 at 9:33 AM Joel Stanley <joel@jms.id.au> wrote: > > + > > +/ { > > + model = "Ampere Mt.Mitchell BMC"; > > + compatible = "ampere,mtmitchell-bmc", "aspeed,ast2600"; > > + > > + chosen { > > + stdout-path = &uart5; > > I know you've been told by Arnd and others to remove the default > command line here, but without it your device tree fails to produce > any output in my tests: > > qemu-system-arm -M ast2600-evb -nographic -dtb > arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dtb -kernel > arch/arm/boot/zImage > > Without a working test, I can't tell the difference between a broken > device tree and one that omits the serial device on the command line. > Can you work with Arnd to come to a solution here?
If you use qemu as the boot loader, I think the expected way to do this is to use the "-append" command line argument along with "-kernel".
Is there any reason for this machine to be special here?
Arnd
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