On 2021-01-11 18:04, Bean Huo wrote:
On Mon, 2021-01-11 at 17:22 +0800, Can Guo wrote:
> > meaning you are tring to access a register when clocks are
> > disabled.
> > This
> > leads to system CRASH.
> >
>
> OK, let it simple, share this kind of crash log becuase of access
> sysfs
> node in the shutdown flow.
>
>
> > [2] OCP is over current protection. While UFS shutting down, you
> > may
> > have put UFS regulators to LPM. After that, if you are still
> > trying
> > to
> > talk to UFS, OCP can happen on VCCQ/VCCQ2. This leads to system
> > CRASH
> > too.
>
> the same as above, share the crash log.
>
If you have hand-on experiences on NoC and/or OCP issues, you won't
ask
for the crash log. The tricky parts about critial NoC and OCP issues
is
OK, interesting. would you tell me which register access node in ufs-
sysfs.c can trigger this crash? let me verify your statement.
I believe I have explained enough to prove we need this change.
If you are really interested in NoC and OCP, feel free to ping me
on teams, I will show you how to trigger one and what is it like
on my setup.
Can Guo.
Bean
