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<div class="moz-cite-prefix">Hi all again and thanks for feedback.<br>
I isolate the problem.<br>
R53 needs to be removed.<br>
<img src="cid:part1.05090306.05030209@mail.ru" alt="" height="199"
width="562"><br>
<br>
I dont want trying to explain how CMOS battery and R53 affects on
starting up, but i done following investigation:<br>
1. If I warm up minnow board to about 80C<br>
2. Then shut it down<br>
3. Then start it up<br>
4. I get VCC(SYS) led flickering in 8 cases of 10.<br>
5. If I then connect scope to SLP_S3_L I will see square wave
about 50ms in period.<br>
6. If i brake SLP_S3_L net in two pieces i see logical 1 on both
sides and dont see any oscillations.<br>
6. If I remove R53, I never see the problem again. <br>
7. I see datasheet for BiDi level translator TXS0104EYZT and found
that external pull-up resistors not needed for this type of
translator.<br>
<br>
I hope this helps someone<br>
<br>
21.12.2015 5:54, Wei, David пишет:<br>
</div>
<blockquote
cite="mid:89954A0B46707A448411A627AD4EEE3437C9F086@SHSMSX101.ccr.corp.intel.com"
type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">Hi all.
Sometimes i have issue with my minnow. I went to boot it up until i
clear CMOS by removing CMOS battery for few minutes.
</pre>
</blockquote>
</blockquote>
</blockquote>
<pre wrap="">
Another effect of removing CMOS battery (the actual name is RTC battery) is that it could reset many registers that are powered by RTC battery.
Thanks,
David | SSG BIOS
-----Original Message-----
From: elinux-MinnowBoard [<a class="moz-txt-link-freetext" href="mailto:elinux-minnowboard-bounces@lists.elinux.org">mailto:elinux-minnowboard-bounces@lists.elinux.org</a>] On Behalf Of Krau, Michael P
Sent: Saturday, December 19, 2015 6:27 AM
To: <a class="moz-txt-link-abbreviated" href="mailto:elinux-minnowboard@lists.elinux.org">elinux-minnowboard@lists.elinux.org</a>
Subject: Re: [MinnowBoard] Went to boot Minnow until clear CMOS
To Follow on John's response:
The CMOS storage is legacy BIOS canon, most new firmware solutions (Like UEFI and FSP) have no dependence upon the CMOS storage on a platform. I could provide the historical rundown on the CMOS storage, but it would be of little value to resolving the issue at hand.
The firmware images provided on the firmware website: <a class="moz-txt-link-freetext" href="https://firmware.intel.com/projects/minnowboard-max">https://firmware.intel.com/projects/minnowboard-max</a>, come in several configurations. There are "Release" and "Debug" versions of images in both 32 and 64 bit execution mode. Though I firmly agree that it would be best to update to the latest firmware revision (0.84). If you have the ability to use the serial console of the MinnowBoard MAX or Turbot, you could use the Debug version to get a firmware dump at boot, which would tell you exactly how far the boot proceeded before going experiencing difficulty, this could give you more clues as to what is happening on the system. The Debug versions do take longer to boot, as they are reporting (debug logging) everything as the boot progresses, so once you have your answers, you can always flash to the 'release' version of the same firmware to get the boot times down again.
To answer John's question, the 0.84 firmware is the first version with the Reset pin capability on a Turbot (per the release notes for 0.84 - supported new features):
6. Main changes in this release
.....
4) Implement the feature that all bios setup will be reset in case of the jumper is present on Turbot Board.
5) Add "RTC Battery Present" item in setup page.
.....
Sincerely,
Michael Krau
-----Original Message-----
From: elinux-MinnowBoard [<a class="moz-txt-link-freetext" href="mailto:elinux-minnowboard-bounces@lists.elinux.org">mailto:elinux-minnowboard-bounces@lists.elinux.org</a>] On Behalf Of John Hawley
Sent: Friday, December 18, 2015 1:58 PM
To: <a class="moz-txt-link-abbreviated" href="mailto:elinux-minnowboard@lists.elinux.org">elinux-minnowboard@lists.elinux.org</a>
Subject: Re: [MinnowBoard] Went to boot Minnow until clear CMOS
On 12/18/2015 02:55 AM, Grigory V. Korotov wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi all.
Sometimes i have issue with my minnow. I went to boot it up until i
clear CMOS by removing CMOS battery for few minutes.
</pre>
</blockquote>
<pre wrap="">
That likely won't reset the firmware as the firmware's storage is non-volatile. You'd either have to externally flash it, or go into the firmware itself to reset it.
There's a change on the Turbots that changes J7 to act as a firmware reset on power on, but that requires the more recent firmware (0.84 has it for sure, I'd have to go back and check if 0.83 does or not), as well as a Turbot.
</pre>
<blockquote type="cite">
<pre wrap="">I've been done some investigation. When board is in frozen state i see
that CORE and GFX power supply stays in default voltages 1.1V on booth
channels. So cpu does not start at all and dont initialize SVID
iterface. When it starts correctly i see about 0.875V and 0.791V on
CORE and GFX channels respectively. If i manually short PMC_RSMRST or
PMC_CORE_PWROK signals nothing changes. Only VCC led shuts off for few
seconds and then shuts on again.
Have someone same issue?
</pre>
</blockquote>
<pre wrap="">
So does the board do anything? Are you seeing anything on serial at all? Does D2 come on or does it bounce (or not come on at all)?
</pre>
<blockquote type="cite">
<pre wrap="">Thanks
P.S. I have 5V 12A power supply ;)
</pre>
</blockquote>
<pre wrap="">
So likely not the power supply's fault ;-) _______________________________________________
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</pre>
</blockquote>
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