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

[Lei Yu]

On Wed, Feb 23, 2022 at 10:38 AM ChiaWei Wang
<chiawei_wang at aspeedtech.com> wrote:
>
> > 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.

Pasted to https://pastebin.com/emseqW6c
It contains two logs, the first one is good, and the second has the issue.