[Bug 1048056] Re: perf_event_open syscall fails for HW counters on Pandaboard

2013-01-16 Thread warmcat
What's the situation with it on tilt-3.4?  3.2 is too old to care about
but 3.4 needs to work under the same conditions.

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  perf_event_open syscall fails for HW counters on Pandaboard

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[Bug 1018092] Re: Perf test fails on Pandaboard (3.4 TILT)

2012-09-18 Thread warmcat
I'm afraid we don't use DS-5 on our side... if you know a Lukas Snetler
in ARM it might be worth having a chat though.

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  Perf test fails on Pandaboard (3.4 TILT)

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[Bug 1018092] Re: Perf test fails on Pandaboard (3.4 TILT)

2012-07-09 Thread warmcat
Dave said that because we disable hw counters due to errata in the hw,
perf -e will fail.

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[Bug 1018092] Re: Perf test fails on Pandaboard (3.4 TILT)

2012-07-09 Thread warmcat
Well perf should work itself OK using the fallback timer-based method,
it's specifically this -e mode.

The hardware counters are in there and do stuff, the problem is (IIRC
overflow) interrupts are prone to get lost, distorting the numbers to
uselessness, and that problem is in the ARM core and lay undiscovered
for a long while so is in all (AFAIK) shipping chips.  So we disabled
them, as I say normal perf should be workable.

I think we have to, as you suggest, do a WONTFIX on it.

** Changed in: linaro-landing-team-ti
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** Changed in: linaro-landing-team-ti
   Status: Incomplete = Won't Fix

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[Bug 971091] Re: Pandaboard ES freezes with the default CPU scaling governor ondemand

2012-06-27 Thread warmcat
** Changed in: linaro-landing-team-ti
   Status: Fix Committed = Fix Released

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[Bug 971091] Re: Pandaboard ES freezes with the default CPU scaling governor ondemand

2012-06-26 Thread warmcat
AFAIK this should be solved in tilt-3.4, the problem was coming from
frequency update code which should now be in good shape.

** Changed in: linaro-landing-team-ti
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[Bug 799921] Re: Pandaboard does not shutdown properly

2012-06-14 Thread warmcat
This is working on tilt-tracking about to become tilt-3.4

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[Bug 971091] Re: Pandaboard ES freezes with the default CPU scaling governor ondemand

2012-04-13 Thread warmcat
I already found out the cause for this on the new tree and fixed it.

I'll prepare a patch on tilt-3.1 with the same fix.

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[Bug 971091] Re: Pandaboard ES freezes with the default CPU scaling governor ondemand

2012-04-13 Thread warmcat
Please try the attached... something is wrong with my boot setup atm,
tilt-3.1 with or without this patch blows up in per_cpu code early in
boot so I can't test it.  It's either boot pieces or toolchain, I moved
to Linaro 4.6.3 toolchain, which works OK on 3.3 stuff.

** Patch added: omap4460-fix-lack-of-mpu-dpll-bypass.patch
   
https://bugs.launchpad.net/ubuntu/+source/linux-ti-omap4/+bug/971091/+attachment/3057762/+files/omap4460-fix-lack-of-mpu-dpll-bypass.patch

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[Bug 843628] Re: perf failure on panda (omap4)

2011-12-26 Thread warmcat
** Changed in: linaro-landing-team-ti
   Status: In Progress = Fix Released

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[Bug 843628] Re: perf failure on panda (omap4)

2011-12-26 Thread warmcat
Dave's also found the remaining 4460-specific PMU init issue, and his
fix

http://git.linaro.org/gitweb?p=landing-
teams/working/ti/kernel.git;a=patch;h=fab7a4a5a0cb4c8fc5692970be6e62aece99599c

is on tilt-3.1, tilt-linux-linaro-3.1 (linaro ubuntu basis) and tilt-
tracking.

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[Bug 843628] Re: perf failure on panda (omap4)

2011-12-15 Thread warmcat
About the platform_device, In tracking, for 4430 it's enabled and
believed workable.  We can't get the unit to start up on 4460 yet.

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[Bug 843628] Re: perf failure on panda (omap4)

2011-12-15 Thread warmcat
Will, I just updated tilt-linux-linaro-3.1 with latest linux-linaro-3.1
from Nicolas tonight.

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[Bug 843628] Re: perf failure on panda (omap4)

2011-12-15 Thread warmcat
... and tilt-linux-linaro-3.1 now has the platform device patch in via
Dave.

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[Bug 843628] Re: perf failure on panda (omap4)

2011-11-29 Thread warmcat
Guys on tilt-tracking we have a patch from Dave Long

http://git.linaro.org/gitweb?p=landing-
teams/working/ti/kernel.git;a=patch;h=32a92107a7137ea32a2209f83dd4bae42ad4ec7c

that re-enables these interrupts for 4430 Panda.  We don't get any boot
crashes so far.

It doesn't hurt 4460 Panda, but it doesn't succeed get any results on
that yet.

tilt-tracking --

http://git.linaro.org/gitweb?p=landing-
teams/working/ti/kernel.git;a=shortlog;h=refs/heads/tilt-tracking

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[Bug 764796] Re: Enable basic profiling tracing options in kernel configuation

2011-11-29 Thread warmcat
** Changed in: linaro-landing-team-ti
   Status: Fix Committed = Fix Released

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  Enable basic profiling  tracing options in kernel configuation

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[Bug 764796] Re: Enable basic profiling tracing options in kernel configuation

2011-11-22 Thread warmcat
** Changed in: linaro-landing-team-ti
   Status: In Progress = Fix Committed

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[Bug 789095] Re: Bluetooth does not work on PandaBoard

2011-10-25 Thread warmcat
I fixed it thismorning

http://git.linaro.org/gitweb?p=landing-
teams/working/ti/kernel.git;a=patch;h=e756cf5be3b63dc49c54a204b9d95332c07db7c5

it's part of the 3.1 stuff pushed on our repo now.

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  Bluetooth does not work on PandaBoard

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[Bug 789095] Re: Bluetooth does not work on PandaBoard

2011-10-24 Thread warmcat
Bluetooth is working OK in Ubuntu and Android I believe on both 3.0,
3.1-based kernels and 4430/4460.

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[Bug 789095] Re: Bluetooth does not work on PandaBoard

2011-10-24 Thread warmcat
I thought I saw in one of your boot traces recently it was being started
up now... you do indeed need uim started.

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[Bug 789095] Re: Bluetooth does not work on PandaBoard

2011-10-24 Thread warmcat
I spent a couple of hours with a guy on irc the other week using ubuntu,
with HEAD uim started in /etc/rc.local  and if you have a 4460, later
firmware, he was working.

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[Bug 789095] Re: Bluetooth does not work on PandaBoard

2011-10-24 Thread warmcat
Great... I believe the Ancients of 2.6.35 did succeed to plug all this
together with udev fwiw.

Yes for a while, maybe still, we had to patch wl12xx sources to correct
the firmware subdir.

Android guys have their firmware in level above to match what the
drivers currently expect (and have working Bluetooth), so this'll need
some coordination, added Vishal.

Vishal in tracking  I'll patch the kernel so bluetooth driver is looking
in  whatever/firmware/ti-connectivity like the WLAN driver does, instead
of current whatever/firmware.

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[Bug 764796] Re: Enable basic profiling tracing options in kernel configuation

2011-10-17 Thread warmcat
We've changed our omap4_defconfig to support the listed features on
tilt-tracking branch

http://git.linaro.org/gitweb?p=people/andygreen/kernel-
tilt.git;a=shortlog;h=refs/heads/tilt-tracking

in a few days when 3.1 releases that config should filter down to all
the other trees based on TILT 3.1 release.

One quirk was that in order to get CONFIG_HW_PERF_EVENTS enabled we had
to disable OMAP3 ARCH builds.

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[Bug 764796] Re: Enable basic profiling tracing options in kernel configuation

2011-10-17 Thread warmcat
** Changed in: linaro-landing-team-ti
   Status: New = In Progress

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[Bug 744458] Re: hw perfevents on the pandabaord

2011-09-07 Thread warmcat
Is this still broken on 3.0 kernel?

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[Bug 588638] Re: console colormap is wrong when using 32bit framebuffer

2011-09-01 Thread warmcat
tilt-3,0 is staying pretty much where it is, it's working with the
current arrangements for Android branch.

tilt-3.0-nodspvideo1 is getting new work from TI for various things and
is used to generate tilt-linux-linaro-3.0 now.

If you just want the vanilla branch the tilt-3.0-nodspvideo1 is the best
idea at the moment.

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[Bug 588638] Re: console colormap is wrong when using 32bit framebuffer

2011-08-31 Thread warmcat
Paolo it's solved on yesterday's (Aug 31) tilt-linux-linaro-3.0... your
package seems to have come from several days before?

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[Bug 588638] Re: console colormap is wrong when using 32bit framebuffer

2011-08-31 Thread warmcat
This is solved as far as my colour-blind eyes can tell on today's tilt-
linux-linaro-3.0 on both HDMI and DVI.

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[Bug 709245] Re: ARM SMP scheduler performance bug

2011-08-28 Thread warmcat
Ming-Lei it sounds like a really good explanation.  But when I test it,
I don't see any real difference on USB memory stick before and after.
Maybe my test is broken somehow?

8GB no-name USB stick

Before the patch --

root@linaro:~# dd if=/dev/urandom of=/media/dump bs=40960 count=1000
1000+0 records in
1000+0 records out
4096 bytes (41 MB) copied, 21.9735 s, 1.9 MB/s

root@linaro:~# dd if=/dev/urandom of=/media/dump bs=40960 count=1000
1000+0 records in
1000+0 records out
4096 bytes (41 MB) copied, 21.3798 s, 1.9 MB/s

root@linaro:~# dd if=/dev/urandom of=/media/dump bs=40960 count=1000
1000+0 records in
1000+0 records out
4096 bytes (41 MB) copied, 21.3694 s, 1.9 MB/s


After the patch --

root@linaro:~# mount /dev/sda1 /media/
root@linaro:~# dd if=/dev/urandom of=/media/dump bs=40960 count=1000
1000+0 records in
1000+0 records out
4096 bytes (41 MB) copied, 21.6143 s, 1.9 MB/s
root@linaro:~# dd if=/dev/urandom of=/media/dump bs=40960 count=1000
1000+0 records in
1000+0 records out
4096 bytes (41 MB) copied, 21.6175 s, 1.9 MB/s
root@linaro:~# dd if=/dev/urandom of=/media/dump bs=40960 count=1000
1000+0 records in
1000+0 records out
4096 bytes (41 MB) copied, 21.5983 s, 1.9 MB/s

I like the idea the delay is coming from L2 cache not being evicted
until something else forces it a lot though.

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[Bug 709245] Re: ARM SMP scheduler performance bug

2011-08-28 Thread warmcat
Hi Ming-Lei -

What I like about your explanation is it allows cache status to be the
communication path for network traffic to impact the issue, ie network
activity finally spills the cache that does update the qtd descriptor
and then we get less deadtime.  That sounds very good to me.

I'm using this tree

http://git.linaro.org/gitweb?p=people/andygreen/kernel-
tilt.git;a=patch;h=7021a2ea35d0b0f96e6c5a753312c26466919efd

Your patch

http://git.linaro.org/gitweb?p=people/andygreen/kernel-
tilt.git;a=shortlog;h=refs/heads/tilt-linux-linaro-3.0

I realized I do have a USB HDD here.  I will try that as well in case
the USB flash drive is the limiting factor.

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[Bug 709245] Re: ARM SMP scheduler performance bug

2011-08-28 Thread warmcat
Ah!  /dev/urandom is the limiting factor ^^  USB HDD is also stuck at
1.9Mbps with the same test.  Same test with of=/dev/null is only getting
2.0Mbps.

With the USB HDD and if=/dev/zero instead, and 10x count

root@linaro:~# dd if=/dev/zero of=/media/dump bs=40960 count=1
1+0 records in
1+0 records out
40960 bytes (410 MB) copied, 16.5168 s, 24.8 MB/s
root@linaro:~# dd if=/dev/zero of=/media/dump bs=40960 count=1
1+0 records in
1+0 records out
40960 bytes (410 MB) copied, 18.4294 s, 22.2 MB/s

With the patch out, this takes an insanely long time.

Against the USB stick, it rises to 7.1MBps with the patch in vs 3.5MBps
with it out.

So nice job!

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[Bug 709245] Re: panda: USB disk IO slow

2011-08-02 Thread warmcat
Maybe the 1ms threshold thing is just to do with a threshold heuristic
where it stops using the scheduler and sleeping and instead spins
udelay() style, hence the 100% CPU.  That's not to write off its effect
on the bug just a possible explanation of why it cares about 1ms or
less.

Reading these new findings yesterday and today I wonder if it's somehow
related to when the ehci stuff schedules the URB.  Like if the CPU is
totally up it can pack USB transactions to go out immediately, but
somehow when idle, although what exactly is in what kind of idle is
unclear, it bumps it to the next frame or so.

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[Bug 709245] Re: panda: USB disk IO slow

2011-08-01 Thread warmcat
Hi Jani -

No, Panda WLAN is on a 4-bit SDIO interface.  So it's completely
different from ping on Ethernet, I don't know what that means that it
still changes USB throughput.

Also when I reproduced this via pinging ethernet, I only saw a 50%
increase in throughput; maybe it's to do with the block size.

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[Bug 789095] Re: Bluetooth does not work on PandaBoard

2011-05-27 Thread warmcat
btsdio is evil I think bt connection on Panda is by UART not SDIO

How does the rest of your config about BT compare to omap4_defconfig on
my tree, eg CONFIG_TI_ST... and do you have uim daemon running?

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[Bug 789095] Re: Bluetooth does not work on PandaBoard

2011-05-27 Thread warmcat
npitre tree doesn't have the necessary patches for BT.  They're layered
out in my for-nicolas branch on top of npitre tree at the moment FWIW.

http://git.linaro.org/gitweb?p=people/andygreen/kernel-
tilt.git;a=shortlog;h=refs/heads/for-nicolas

Generally LT tree has radioactive patches that would conflict with other
builds of a common tree so npitre can't take them.  But, LT tree is at
least based on npitre.

On Panda / WL12XX BT, you also need a userland daemon called uim for BT
to work.

https://gitorious.org/uim

I build the BT config in the monolithic kernel and run uim in
/etc/rc.local with no args, this gets workable BT on Panda.

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[Bug 746133] Re: Video loses sync on omap4

2011-04-26 Thread warmcat
Seems to be two different issues, one is the original bug report and
this other random  thing.

On my tree, with my config, I don't see this at all.  Blanking occurs
but I can every time bring it back by waving the mouse a couple of
seconds without these errors.

Is the kernel you're seeing this with maybe having CPU_FREQ enabled?
I'm running with it disabled.

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[Bug 745737] Re: Kernel panic when rebooting panda board

2011-04-14 Thread warmcat
It's a different issue.  This will solve it --

http://git.linaro.org/gitweb?p=people/andygreen/kernel-
tilt.git;a=patch;h=1b0d6d49516d29bf2d723e2789e6f0fcd483f7b7

On OMAP, if you try to touch any peripheral unit that is not clocked,
it'll blow a bus abort which shows up as one of these imprecise
external aborts.  MUSB has recently taken on runtime_pm which means
units are unclocked more often when out of use, and evidently it's not
100% yet.

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[Bug 752900] Re: Panda hangs if display is enabled

2011-04-07 Thread warmcat
These don't appear on my tree.

[0.867492] omap_hwmod: l3_div_ck: missing clockdomain for l3_div_ck.
[0.85] omap_hwmod: dss_dispc: softreset failed (waited 1 usec)
[0.908599] omap_hwmod: dss_rfbi: softreset failed (waited 1 usec)
[0.931549] omap_hwmod: ipu: failed to hardreset

This is not set in my config and is known to kill boot on my tree --

CONFIG_OMAP2_DSS_VENC=y

It's for video encoder (S-Video) support that doesn't exist on Panda
anyway.

See if disabling that helps.

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[Bug 712175] Re: OMAP Beagle C4: kernel does not reliably find SD card on boot

2011-03-30 Thread warmcat
rootwait should be optimal for this situation, something else is going
on like issue with card detect.

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[Bug 720055] Re: CONFIG_OMAP2_DSS_SDI on OMAP4 causes: Unhandled fault: imprecise external abort (0x1406) at 0x2ada61a8

2011-03-30 Thread warmcat
rootwait / mmc is likely unrelated, it just happened to be where the
other core was when it blew.  The first core is indeed in the same code
known to cause this.

Can you do like

zcat /proc/config.gz | grep SDI

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[Bug 720055] Re: CONFIG_OMAP2_DSS_SDI on OMAP4 causes: Unhandled fault: imprecise external abort (0x1406) at 0x2ada61a8

2011-03-30 Thread warmcat
Does your tree have the patch attached from Seb Jan?

** Patch added: omapfb lock fix
   
https://bugs.launchpad.net/ubuntu/+source/linux-linaro/+bug/720055/+attachment/1956893/+files/0001-OMAPFB-protect-console-while-re-allocating-FB.patch

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[Bug 660639] Re: twl driver failed to transfer msgs etc

2011-03-24 Thread warmcat
I sent a patchset that was accepted into linux-omap 19 March which fixes
a problem in OMAP3 where it can fail to touch the correct register in
the I2C code, instead it touches a random-ish or non-existent I2C
register.

http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-
omap-2.6.git;a=commit;h=a3c5371a545d24cdf298df8c0beb87db9285c888

That could cause this kind of symptom on OMAP3.

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[Bug 733334] Re: no audio with linaro-ubuntu-desktop + beagleXm

2011-03-14 Thread warmcat
It might be worth trying just aplay from the console, try to see if the
problem is coming from alsa side or pulse.  What does cat
/proc/asound/cards say?

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  no audio with linaro-ubuntu-desktop + beagleXm

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[Bug 708883] Re: Panda board shuts down during boot

2011-03-07 Thread warmcat
Since Sebasien Jan took my patch into his tree, and the Ubuntu Panda
kernel is coming via his tree, it should mean that kernel has the patch
in it.  You can confirm it with

$ dmesg | grep 6030: Interrupt status

if it shows anything it's using the patch.

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[Bug 728565] Re: open(/dev/ttyO2, O_RDONLY) never returns on the 2.6.38-1000-linaro-omap

2011-03-03 Thread warmcat
I could reproduce this with strace cat /dev/ttyO2, it hung at the open()
but responded to ^C.

I couldn't reproduce the OOPS.

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[Bug 720055] Re: Unhandled fault: imprecise external abort (0x1406) at 0x2ada61a8

2011-03-03 Thread warmcat
Specifically master on 
http://git.linaro.org/gitweb?p=people/andygreen/kernel-tilt.git
with config from arch/arm/configs/omap4_panda_minimal_defconfig doesn't show 
this problem for me and has display enabled; that tree is based on Nicolas' 
tree.

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[Bug 633227] Re: instabilities with highmem activated

2011-02-19 Thread warmcat
FWIW, I tried to reproduce this with CONFIG_HIGHMEM and 460M + 512M,
confirmed in /proc/meminfo that there is highmem and set it compiling a
kernel repeatedly.  After 5 hours it didn't fail.  This is with Seb
Jan's 2.6.38-rc2 tree.

I'll test it further later.

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[Bug 633227] Re: instabilities with highmem activated

2011-02-19 Thread warmcat
(#28 above is on an A1 board with ES2.1 silicon)

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[Bug 708883] Re: Panda board shuts down during boot

2011-02-16 Thread warmcat
After a lot of help from kenws testing, I have a small patch which
should stop the Panda going OFF.  I can explain why it goes off without
the patch, but since TI won't let me have a twl6030 datasheet I can't
get right to the end yet.

Basically the Panda PMIC is seeing an overcurrent on one of its
regulators, and reporting it via b6 of its interrupt sources VXXX_SHORT.
Like other PMICs, if something bad like that happens the PMIC gives the
CPU a short time to acknowledge the report of the bad news, and if the
CPU doesn't come and clear the interrupt within that time, the PMIC will
force the device OFF for safety.

The mainline twl6030 driver takes the approach that it will mask off all
interrupt sources except the ones it is interested in, just MMC card
detect and USB OTG ID status at the moment.  Therefore if the VXXX_SHORT
condition occurs with the driver as it is, the interrupt is not cleared
and the PMIC panics forcing the Panda OFF.

The patch enables all interrupt sources instead, so the condition is
acknowledged.

The variation in boards showing the problem or not is explained by the
process spread of the overcurrent comparator in the PMIC; I was able to
reduce the threshold on mine by lowering Vin and reducing the PMIC
temperature so I could control whether VXXX_SHORT was generated or not
since the actual current was marginal vs the comparator limit.  But
since the comparator limit would normally be quite a little bit above
the max legal current, it suggests that on one regulator the Panda
really is pulling more than it should.

So the root cause is genuinely excessive current on one of the
regulators, but I don't know which one because I don't have a datasheet
(although I would look at the 2.1V one first).  The final fix will be to
identify the regulator and reduce the current taken.  But in the
meanwhile this patch should remove the symptom.

** Patch added: Workaround for Panda overcurrent detect making reboot
   
https://bugs.launchpad.net/ubuntu/+source/linux-linaro/+bug/708883/+attachment/1853922/+files/panda-twl6030-enable-all-irq-sources.patch

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[Bug 708883] Re: Panda board shuts down during boot

2011-02-15 Thread warmcat
I added the modprobe ledtrig-heartbeat to /etc/rc.local for now,
although I'm sure there's a better place.

I cycled the power 10 times.  9 times it was normal, but one time there
was a 30s delay before boot completed.  If it delayed 30s with LEDs off,
many people will think the board is OFF.


Normal --

[2.144744] udev[65]: starting version 165
Begin: Loading e[2.153198] usb 1-1: new high speed USB device using 
ehci-omap and address 2
ssential drivers ... done.
Begin: Running /scripts/init-premount ... done.
Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done.
[2.357147] hub 1-1:1.0: USB hub found
[2.361633] hub 1-1:1.0: 5 ports detected
Begin: Running /scripts/local-premount ... done.
[2.412078] EXT3-fs: barriers not enabled
[2.419006] kjournald starting.  Commit interval 5 seconds
[2.425384] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
Begin: Running /scripts/local-bottom ... done.
done.
Begin: Running /scripts/init-bottom ... done.
[2.668670] usb 1-1.1: new high speed USB device using ehci-omap and address 
3


Slow --

Begin: Loading e[2.145019] usb 1-1: new high speed USB device using 
ehci-omap and address 2
ssential drivers ... done.
Begin: Running /scripts/init-premount ... done.
Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done.
[2.341339] hub 1-1:1.0: USB hub found
[2.346069] hub 1-1:1.0: 5 ports detected
[2.824768] usb 1-1.1: new high speed USB device using ehci-omap and address 
3

Begin: Running /scripts/local-premount ... done.
[   32.391906] EXT3-fs: barriers not enabled

You can notice that the difference is usb node 1-1.1 enumeration
happening before local-premount or not (before local-premount makes the
delay).

usb node 1-1.1 is the SMSC USB Ethernet PHY.

Is there a race between the USB Ethernet PHY enumeration and the rootfs
being ready to use network layer?  Eg, no /sys mounted at that time in
the bad case or somesuch?

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[Bug 633227] Re: instabilities with highmem activated

2011-02-15 Thread warmcat
@Bryan is there any chance you can try specifically your SD Card
that fails in Ming Lei's new board?  There are a lot of possible
variables like x-loader, U-Boot and kernel version, even maybe rootfs
actions that can be eliminated as the sole cause of the problem if that
same card works on his device.

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[Bug 708883] Re: Panda board shuts down during boot

2011-02-14 Thread warmcat
Most of this confusion is coming because the LED trigger heartbeat is
being built as a module (why?) and not inserted.

If you type

 modprobe ledtrig-heartbeat

at the prompt you will get the familiar flashing LED letting you know
the board is ON.  So I guess the confusion about ON or OFF will be
removed anyway if this is added to an initscript.

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[Bug 708883] Re: Panda board shuts down during boot

2011-02-08 Thread warmcat
I examined the pandaboard schematics and found that the SYS_BOOT[7..0]
pins are set to 1101 by default.  These control the actions of the
ROM on the OMAP4.  b5..b0 select the boot ordering; 000101 means try USB
boot first and MMC1 second.

In the case that no external power is connected to the USB OTG, the ROM
skips initializing the USB unit and boot proceeds normally via MMC1.

In the case that there is external power coming to the USB OTG
connector, the ROM spends a few seconds trying to bring that up and if
it isn't satisfied then proceeds to the second boot option via MMC1.  It
starts the MMC1 card clock and pulls in X-loader and it starts.

However because of some side effect of the ROM having followed a boot
path that started the OTG unit, X-loader is unable to operate normally
at a couple of points during its initialization.

I have just sent some patches to linaro-dev that fix this for me so I am
able to boot into Linux OK just from my laptop plugged into the OTG
socket on Panda.

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[Bug 708883] Re: Panda board shuts down during boot

2011-02-08 Thread warmcat
@Aneesh... my problem was with USB OTG power of the board, it is fixed
with the patches but you're right the bug in Launchpad is more about
dying later.  Like yourself my board is not dying later either.  My
patch also does prcm_init() earlier but after that there is another
problem with using shadow updates of the clock register when EMIF IDLE
is disabled; it only updates when the EMIFs are idle (DDR is not busy
then).  It sat for a long time (minutes at least) in the loop waiting to
confirm the shadow update had gone through.

@Ricardo... I think there are two issues, mine was crashing early in
boot if powered by USB OTG and that's solved by my patches.  Panda
board shuts down in boot described my issue too.  I can't reproduce the
other issue.

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[Bug 708883] Re: Panda board shuts down during boot

2011-02-07 Thread warmcat
I was trying to power my Panda board from USB OTG connector, it dies
early in boot apparently in xloader or u-boot when connected to a
laptop.

I did three tests

1) Short the USB OTG 5V pin to the DC Jack 5V pin in case something in
the OTG 5V path makes trouble.  It still dies in early boot.

2) Remove the D+ and D- wires from the USB cable, still plugged into the
OTG socket.  It still dies in early boot.

3) Completely remove the connection from the OTG socket, and bring the
same laptop USB power to the DC power jack.  Boots fine.

So it seems that you just need external power coming to the OTG power
pin to make the early boot problem.

I also tested combinations of DC Jack power with OTG power using
different sequencing, DC Jack power couldn't allow it to recover once it
was in the process of dying, and you could not start the board again
until both power sources were removed.

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[Bug 708883] Re: Panda board shuts down during boot

2011-02-07 Thread warmcat
Well, there's no reason to expect it should be consistent since we
didn't compare which version of Xloader and U-Boot I am running and you
already have reason to believe the behaviour depends on that.  However
what I reported is repeatable on this board with

Texas Instruments X-Loader 1.41 (Oct  6 2010 - 17:27:48)
U-Boot 2010.09-rc1 (Sep 23 2010 - 11:24:55)

If that looks like you old, working setup maybe you can try that with
the USB OTG power to see if that provokes the messed-up boot.

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[Bug 708883] Re: Panda board shuts down during boot

2011-02-07 Thread warmcat
AFAICT the latest X-loader amongst the various trees lives here

http://gitorious.org/x-loader

I built the current HEAD of it and got

Texas Instruments X-Loader 1.4.4ss (Feb  7 2011 - 21:09:54)

This boots fine under DC Jack power (derived from my laptop USB port)
and continues to turn the status LEDs off after a few seconds if powered
from the Panda OTG jack.

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[Bug 218165] Re: No sound on Acer Aspire 8920G with H.Heron 8.04 Beta x86_64 and Realtek ALC889 and Intel HDA 82801H

2008-05-06 Thread warmcat
I have an Acer Aspire 8920g and Alsa's snd-hda-intel does not have a
model that works completely on it yet.  However after some help on the
Alsa lists, I was able to get it working for stereo anyway on internal
speakers.  See this post:

http://mailman.alsa-project.org/pipermail/alsa-
devel/2008-May/007653.html

This is on Fedora 9, but it is not a distro-specific issue (assuming
your distro builds the kernel with CONFIG_SND_HDA_HWDEP anyway,
otherwise you are into rebuilding alsa with that option as well as the
applet mentioned in the post above).

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