Re: Oops while booting 5.15.2 on Nokia N900

[Andreas Kemnade <andreas@kemnade.info>]

Hi,

On Wed, 8 Dec 2021 21:57:00 +0100
Pavel Machek <pavel@ucw.cz> wrote:

> Hi!
> 
> You may want to cc: linux-kernel@vger.kernel.org and
> phone-devel@vger.kernel.org, since this is kernel issue.
> 
> > > I am back with a bit more news, but no solution.  
> > 
> > It looks like commit fb2c599f056640d289b2147fbe6d9eaee689f1b2 ("ARM:
> > omap3: enable off mode automatically") is causing these failures on the
> > Nokia N900. Reverting this commit on top of v5.10 (with
> > 21b2cec61c04bd175f0860d9411a472d5a0e7ba1 also reverted), makes the
> > problem go away (I tried 10 times).
> > 
> > The same holds for 5.15.y, just reverting
> > fb2c599f056640d289b2147fbe6d9eaee689f1b2 makes the system "stable" (at
> > least the problem reported in the first email is gone).
> > 
> > Perhaps the "pwrst->next_state" change is causing these problems, since
> > I can enter OFF mode just fine with init=/bin/sh and a custom
> > script?  
> 
> fb2c599f056640d28 has some hints in it. Perhaps Andreas can mention
> what boards he tested it on?
> 
well, I tested it on gta04a4 and gta04a5 (both dm3730).
There is one 1Ghz issue at least on the a5, so I disabled that opp.

> And rather than reverting it, we may want to delete ti,twl4030-idle*
> hints from n900 device tree for now?
> 
well, it has side effects on power consumption, power consumption
should be worse without ti,twl4030-idle-*. So the real solution would
be to understand what is causing the trouble here.

Regards,
Andreas