Re: [GIT PULL] for testing: OMAP hwmod driver conversions: watchdog, UART, i2c

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Tony Lindgren <tony@xxxxxxxxxxx> writes:

> * Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> [100929 15:15]:
>> Tony Lindgren <tony@xxxxxxxxxxx> writes:
>> 
>> > * Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> [100928 11:25]:
>> >> Tony,
>> >> 
>> >> The following pull request will bring hwmod driver conversions for
>> >> watchdog, UART and i2c drivers.  It is based on your omap-for-linus
>> >> branch.
>> >> 
>> >> The i2c driver is waiting for final signoff/ack from the upstream
>> >> subsystem maintainers, but are otherwise ready to go for broader
>> >> testing.  After I get the final ack, I will update the branch for a
>> >> final pull.
>> >> 
>> >> In the meantime, I'd like to get them into l-o master (or omap-testing)
>> >> for broader testing.
>> >
>> > Tried pulling it but I'm getting tons of these errors on omap2:
>> 
>> Tony, 
>> 
>> Can you pull the latest version of my pm-hwmods branch from:
>> ssh://master.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm.git pm-hwmods
>> 
>> This version has the updated patch from Rajendra for i2c as well as some
>> UART3 fixes for a problem he noticed on 2430 as well.
>
> Getting closer.. Now 2430sdp boots OK. But on N800 (2420) I get the following
> very early on:

> ...
> [    0.000000] Calibrating delay loop... 318.27 BogoMIPS (lpj=1245184)
> [    0.000000] pid_max: default: 32768 minimum: 301
> [    0.000000] Security Framework initialized
> [    0.000000] Mount-cache hash table entries: 512
> [    0.000000] CPU: Testing write buffer coherency: ok
> [    0.000000] Unhandled fault: imprecise external abort (0xc06) at 0x00000000
> [    0.000000] Internal error: : c06 [#1] SMP
> [    0.000000] last sysfs file:
> [    0.000000] Modules linked in:
> [    0.000000] CPU: 0    Not tainted  (2.6.36-rc6-08801-g332f930 #395)
> [    0.000000] PC is at kernel_thread_helper+0x0/0x14
> [    0.000000] LR is at kernel_thread_helper+0x0/0x14
> [    0.000000] pc : [<c004cc94>]    lr : [<c004cc94>]    psr: 00000093
> [    0.000000] sp : c7825ff8  ip : 00000000  fp : 00000000
> [    0.000000] r10: 00000000  r9 : 00000000  r8 : 00000000
> [    0.000000] r7 : 00000013  r6 : c004cca8  r5 : c00a4dc0  r4 : 00000000
> [    0.000000] r3 : 00000000  r2 : 00000000  r1 : 00000000  r0 : 00000000
> [    0.000000] Flags: nzcv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
> [    0.000000] Control: 00c5387f  Table: 80004000  DAC: 00000017
> [    0.000000] Process swapper (pid: 2, stack limit = 0xc78242f8)
> [    0.000000] Stack: (0xc7825ff8 to 0xc7826000)
> [    0.000000] 5fe0:                                                       ffffffff ffffffff
> [    0.000000] [<c004cc94>] (kernel_thread_helper+0x0/0x14) from [<ffffffff>] (0xffffffff)
> [    0.000000] Code: c04d9ba8 c04de459 c05ca0a0 c04caf13 (eb01ac97)
> [    0.000000] ---[ end trace 1b75b31a2719ed1c ]---
>

Hmm, this fault is very early and long before any PM code has
initialzed.  I suspect this happens with the master branch too ??

What config are you using to get a small enough kernel to boot on your
n810?  nolo on my n810 only accepts a maximum size kernel of 2097152
bytes. :(

> Then trying to build for omap1 OSK fails with:

phew, guess I'm off the hook on that one.

Kevin
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