From: Daniel Mack <zonque@gmail.com>
To: Andrei Emeltchenko <andrei.emeltchenko.news@gmail.com>
Cc: Bing Zhao <bzhao@marvell.com>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
Amitkumar Karwar <akarwar@marvell.com>,
"Porter, Matt" <mporter@ti.com>
Subject: Re: mwifiex_sdio problem: firmware fails to be active in time
Date: Thu, 01 Nov 2012 12:10:46 +0100 [thread overview]
Message-ID: <509258B6.5080104@gmail.com> (raw)
In-Reply-To: <20121101094812.GC17693@aemeltch-MOBL1>
On 01.11.2012 10:48, Andrei Emeltchenko wrote:
> Hi Daniel,
>
> On Sun, Oct 28, 2012 at 04:49:02PM +0100, Daniel Mack wrote:
>> On 26.10.2012 22:58, Daniel Mack wrote:
>>> [have to re-open this issue again]
>>>
>>> On 21.10.2012 16:16, Andrei Emeltchenko wrote:
>>>> I have the same board and see this problem sometimes. Reloading modules
>>>> might help, if not reboot always works :).
>>>
>>> I thought I solved this issue, but I can't reproduce the running version
>>> anymore unfortunately. It constantly fails with the error I described,
>>> even though the clock and all voltages etc are definitely stable.
>>
>> Ok, following up on my own writings: I solved this issue. It took me
>> awhile to figure out that the 88WSD8787 is really picky about the
>> clock/power sequencing. It really needs >= 1ms delay in the startup
>> phase, otherwise the firmware won't start up.
>
> So did you put delay in a marvell sdio driver?
No, that has to be done by some code that first enables the clock and
then asserts the PDN line (assuming that clock is generated by some sort
of PLL or CPU).
Daniel
next prev parent reply other threads:[~2012-11-01 11:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-17 23:50 mwifiex_sdio problem: firmware fails to be active in time Daniel Mack
2012-10-18 0:20 ` Bing Zhao
2012-10-18 16:08 ` Daniel Mack
[not found] ` <CAMXE1-qWOKphtOjUYWUz1CLDUtAynODvHmLm60rJMC=jBtRsNw@mail.gmail.com>
2012-10-26 20:58 ` Daniel Mack
2012-10-28 15:49 ` Daniel Mack
2012-11-01 9:48 ` Andrei Emeltchenko
2012-11-01 11:10 ` Daniel Mack [this message]
2012-11-01 9:46 ` Andrei Emeltchenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=509258B6.5080104@gmail.com \
--to=zonque@gmail.com \
--cc=akarwar@marvell.com \
--cc=andrei.emeltchenko.news@gmail.com \
--cc=bzhao@marvell.com \
--cc=linux-wireless@vger.kernel.org \
--cc=mporter@ti.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).