All of lore.kernel.org
 help / color / mirror / Atom feed
From: Kevin Hilman <khilman@ti.com>
To: Keshava Munegowda <Keshava_mgowda@ti.com>, Felipe Balbi <balbi@ti.com>
Cc: linux-omap <linux-omap@vger.kernel.org>
Subject: MFD USB host: prevents CORE retention in idle
Date: Wed, 23 May 2012 17:01:26 -0700	[thread overview]
Message-ID: <87zk8yxx9l.fsf@ti.com> (raw)

Hi Keshava,

Using current l-o master, I noticed that CORE was not hitting retention
in idle on my 3530/Overo.  CORE hits retention on suspend just fine.

Debugging this, I found that usbtll_fck was still enabled during idle,
thus preventing CORE from hitting retention.

To test, I disabled USB host (CONFIG_MFD_OMAP_USB_HOST=n in .config) and
was then started seeing CORE hit retention in idle again.

I have nothing plugged into the USB host port on this board, so I
would've expected that runtime PM would've kicked in and shutdown this
clock.

Any ideas what's going on here?  Is this expected behavior?

Kevin

             reply	other threads:[~2012-05-24  0:01 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-24  0:01 Kevin Hilman [this message]
2012-05-24  0:25 ` MFD USB host: prevents CORE retention in idle Kevin Hilman
2012-05-24  7:05   ` Munegowda, Keshava
2012-05-24 17:02     ` Kevin Hilman
2012-05-24 22:13       ` Kevin Hilman
2012-06-05 17:50         ` Kevin Hilman
     [not found]           ` <CAP05o4L+0E6fa1VoP_UPTJgKjXb-VqZorUfzsTB3d-KVoFrXfw@mail.gmail.com>
     [not found]             ` <CAP05o4KuoQHhTRTCtdpiywgC1HjwzXZHhROKOgSLhoK76Z2aaQ@mail.gmail.com>
     [not found]               ` <87fwa56gxp.fsf@ti.com>
     [not found]                 ` <CAP05o4JEEp-yXjijeeejN3j8uVBDQ35DMGqP9UKj3f7sNnO8LA@mail.gmail.com>
     [not found]                   ` <CAP05o4LYhFQpEFukyCT2fA7XHPU2L5K8=8W0fncMJk6YEUWdOQ@mail.gmail.com>
2012-06-15 12:04                     ` Munegowda, Keshava
2012-06-15 13:47                       ` Jean Pihet
2012-06-18  8:09                         ` Munegowda, Keshava
2012-06-19 18:02                           ` Kevin Hilman
2012-06-20  6:23                             ` Munegowda, Keshava
2012-06-20  9:29                               ` Munegowda, Keshava
2012-06-20 14:23                                 ` Kevin Hilman
2012-06-21  7:12                                   ` Munegowda, Keshava
2012-06-21 10:47                                     ` Grazvydas Ignotas
2012-06-21 18:32                                       ` Kevin Hilman

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=87zk8yxx9l.fsf@ti.com \
    --to=khilman@ti.com \
    --cc=Keshava_mgowda@ti.com \
    --cc=balbi@ti.com \
    --cc=linux-omap@vger.kernel.org \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.