On 18/08/2022 19:06, Arnd Bergmann wrote:
On Thu, Aug 18, 2022 at 9:33 AM Joel Stanley <joel@xxxxxxxxx> 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?
Thanks Arnd for the comment.
I think adding -append could solve the issue.
But as the bootargs still exist in all other
arch/arm/boot/dts/aspeed-bmc-*.dts should we still keep bootargs for
this dts?
Thanks,
- Quan
