From: R Sricharan <r.sricharan@ti.com>
To: Benoit Cousson <b-cousson@ti.com>
Cc: Luciano Coelho <coelho@ti.com>,
balbi@ti.com, Peter Ujfalusi <peter.ujfalusi@ti.com>,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
svenkatr@ti.com, linux-omap@vger.kernel.org,
linux-mmc@vger.kernel.org, cjb@laptop.org, lrg@ti.com,
linux-kernel@vger.kernel.org, Tony Lindgren <tony@atomide.com>
Subject: Re: 32kHz clock removal causes problems omap_hsmmc
Date: Wed, 19 Dec 2012 23:36:55 +0530 [thread overview]
Message-ID: <50D2023F.1000609@ti.com> (raw)
In-Reply-To: <50D1C957.8090201@ti.com>
Hi,
On Wednesday 19 December 2012 07:34 PM, Benoit Cousson wrote:
> On 12/19/2012 02:58 PM, Luciano Coelho wrote:
>> On Wed, 2012-12-19 at 14:51 +0100, Benoit Cousson wrote:
>>> On 12/19/2012 02:01 PM, Felipe Balbi wrote:
>>>> On Wed, Dec 19, 2012 at 11:56:20AM +0100, Peter Ujfalusi wrote:
>>>>> BTW: have you happened to ubdate u-boot recently? There is a nice easter egg
>>>>> added there:
>>>>> f3f98bb ARM: OMAP4/5: Do not configure non essential pads, clocks, dplls.
>>>>>
>>>>> Which means that _essential_ clocks and pads are no longer configured.
>>>>
>>>> anything essential you can list ?
>>>
>>> Yeah, that u-boot version is just unusable at all with any mainline
>>> kernel, since we are still missing pads conf for every drivers.
>>>
>>> Regarding the 32k clock, I noticed as well that the OMAP4460 panda
>>> u-boot is the only one to enable it at boot time, and thus this is the
>>> only board that can probe the wilink chip properly as of today.
>>
>> Do you mean that with the latest mainline u-boot all boards will have
>> trouble except panda?
>
> I don't know since the u-boot mainline has never ever supported properly
> the SDP4430, I stopped wasting my time with that code a long time ago.
> But the braves who tried using the latest u-boot mainline code that does
> not configure anything anymore had some troubles...
>
Configuring every pad and clocks in the u-boot was removed to
force kernel drivers to fix up things. Dependency on boot loader
was always a problem. Bootloader should not configure anything apart
from what is required for boot.
Regards,
Sricharan
next prev parent reply other threads:[~2012-12-19 18:07 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-15 8:31 32kHz clock removal causes problems omap_hsmmc Luciano Coelho
2012-12-18 9:54 ` Felipe Balbi
2012-12-19 9:45 ` Mark Brown
2012-12-19 10:00 ` Peter Ujfalusi
2012-12-19 10:09 ` Mark Brown
2012-12-19 10:18 ` Peter Ujfalusi
2012-12-19 10:32 ` Mark Brown
2012-12-19 10:45 ` Luciano Coelho
2012-12-19 10:56 ` Peter Ujfalusi
2012-12-19 11:00 ` Peter Ujfalusi
2012-12-19 11:02 ` Mark Brown
2012-12-19 11:07 ` Luciano Coelho
2012-12-19 13:01 ` Felipe Balbi
2012-12-19 13:51 ` Benoit Cousson
2012-12-19 13:54 ` Felipe Balbi
2012-12-19 13:58 ` Mark Brown
2012-12-19 13:58 ` Luciano Coelho
2012-12-19 14:04 ` Benoit Cousson
2012-12-19 18:06 ` R Sricharan [this message]
2012-12-19 14:31 ` Peter Ujfalusi
2012-12-19 16:28 ` Tony Lindgren
2012-12-19 10:01 ` Luciano Coelho
2012-12-19 10:28 ` Mark Brown
2012-12-19 10:42 ` Luciano Coelho
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=50D2023F.1000609@ti.com \
--to=r.sricharan@ti.com \
--cc=b-cousson@ti.com \
--cc=balbi@ti.com \
--cc=broonie@opensource.wolfsonmicro.com \
--cc=cjb@laptop.org \
--cc=coelho@ti.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=lrg@ti.com \
--cc=peter.ujfalusi@ti.com \
--cc=svenkatr@ti.com \
--cc=tony@atomide.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