New u-boot-aspeed-sdk runs slow and cause wdt2 timeout on ast2500

[ChiaWei Wang]

> Lei Yu
> Sent: Wednesday, February 23, 2022 10:15 AM
> 
> On the latest master with u-boot-aspeed v00.04.09 SDK, an issue occurs on
> g220a that it runs slower than before and gets wdt2 timeout.
> We reverted the u-boot to a version before v00.04.09 SDK (b0fe8fd9d) and the
> issue is gone.
> 
> Below are some details:
> * Before v00.04.09: u-boot works OK, and it takes about 9~10 seconds to load
> and start the kernel including the 2 seconds timeout for autoboot, the kernel
> starts OK and it kicks the watchdog as long as the driver is loaded.
> * With v00.04.09: u-boot runs slower than before, and it takes about
> **16 seconds** to load and start the kernel (including 2s timeout for
> autoboot), then the kernel does not have enough time to run and loads the
> watchdog driver, and the wdt2 times out on about 22s.

Could you share us the boot log with timestamps?
It would be nice to know the time elapsed at each stage.

Regards,
Chiawei

> 
> Be noted that the issue is observed on g220a that is based on AST2500, and
> could not be reproduced in QEMU. I think it could be reproduced on other
> systems with AST2500.