FSO stable and glamo

Nelson Castillo arhuaco at freaks-unidos.net
Thu Jan 15 19:58:05 CET 2009


On Thu, Jan 15, 2009 at 5:19 AM, Andy Green <andy at openmoko.com> wrote:
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> Somebody in the thread at some point said:
>
> | I could rotate here but after one more attempt I got white screen :-/
> | The behavior is not (apparently) deterministic because the first time
> | I tried (now shown) I got the white screen immediately.
> |
> | This is a message that the kernel will print if you try to use the
> | system after the white screen:
> |
> | [  637.245000] jbt6k74 spi2.0: **** jbt6k74 unblank
> | [  637.305000] *************glamofb cmd_queue never got empty*************
> | [  637.390000] *************glamofb cmd_queue never got empty*************
> |
> | Any clues?
>
> Nelson, something to confirm is if we trigger the bad hardware reset
> circuit on Glamo.  If you do a dump of Glamo regs before and after you
> trigger the problem, just the first few lines should do, we can confirm
> if there was a hard reset on Glamo.  It's worth checking because it will
> make the WSOD and there is no way to find it otherwise.

Andy, this is the diff before the rotation and after the failed
rotation (WS). How can I make sense of these values?
(I guess I might have to - I haven't read docs yet).

--- regs-before.txt	2009-01-15 13:53:58.000000000 -0500
+++ regs-after.txt	2009-01-15 13:53:58.000000000 -0500
@@ -4,8 +4,8 @@
 0000:  2020 3650 0002 01ff 0000 0000 0000 0000
 0010:  000d 000b 00ee 000f 1082 1000 3000 002f
 0020:  1000 0000 3000 1000 0000 0000 0000 0000
-0030:  187d 0010 2000 0101 0102 0000 0000 0000
-0040:  05db 5a21 0aba a662 0003 0000 0000 0000
+0030:  187d 0010 2000 0103 0102 0000 0000 0000
+0040:  05db 5a38 0aba a68c 0003 0000 0000 0000
 0050:  000f 111e ccc3 111e 000f 0001 000f 030f
 0060:  080f 0e0f 0000 0000 0000 0000 0000 0000
 0070:  0000 0000 0000
@@ -24,15 +24,15 @@

 LCD 1

-1100:  0020 9020 0b40 01e0 0280 440c 0000 0000
-1110:  6000 0009 0000 0000 03c0 0000 0200 0000
+1100:  8020 9020 0b40 81e0 0280 440c 0000 0000
+1110:  6000 0009 0000 0000 0500 0000 0200 0000
 1120:  0000 0000 0008 0000 0010 0000 01f0 0000
 1130:  0294 0000 0000 0000 0002 0000 0004 0000
 1140:  0284 0000 0000 0000 0000 0000 0000 0000
 1150:  c000 0012 0000 0000 0000 0000 0000 0000
 1160:  0000 0000 0000 0000 0000 0000 0000 0000
 1170:  0000 0000 0000 0000 0000 0000 0000 0000
-1180:  81b2 00fc 4600 0002 0000 0000 0000 0000
+1180:  8023 0000 4600 0002 0000 0000 0000 0000
 1190:  0000 0000 0000 0000 0000 0000 0000 0000
 11A0:  0000 0000 0000 0000 0000 0000 0000 0000
 11B0:  0000
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