public inbox for
 help / color / mirror / Atom feed
Subject: [Bug 1001815] New: Freescale DSPI avoid Rx DMA if transfer fits in FIFO.
Date: Thu, 04 Apr 2013 19:57:00 -0000	[thread overview]
Message-ID: <> (raw)

Please do not reply to this email, use the link below.

            Bug ID: 1001815
           Summary: Freescale DSPI avoid Rx DMA if transfer fits in FIFO.
           Product: eCos
           Version: CVS
            Target: freescale_twr_k70f120m (Freescale Kinetis TWR-K70F120M
  Architecture/Host Cortex-M
            Status: NEW
          Severity: enhancement
          Priority: low
         Component: Patches and contributions
        Depends on: 1001814

Created attachment 2157
DSPI Rx DMA avoid

Current DSPI avoids Tx DMA when transfer fits in DSPI FIFO (typically 4 bytes).
The submitted patch does the same also for Rx. The benefit should be
considerable especially in cached systems due to avoidance of cache

Additionally the patch implements DSPI clock gating enable as per bug 1001814.


You are receiving this mail because:
You are on the CC list for the bug.

             reply	other threads:[~2013-04-04 19:57 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-04 19:57 bugzilla-daemon [this message]
2013-04-06 12:51 ` [Bug 1001815] " bugzilla-daemon
2013-04-07 11:13 ` bugzilla-daemon
2013-04-07 16:44 ` bugzilla-daemon
2013-04-15 22:29 ` bugzilla-daemon
2013-04-15 22:31 ` bugzilla-daemon
2013-05-18 19:26 ` bugzilla-daemon
2013-05-18 19:31 ` bugzilla-daemon
2013-05-18 19:37 ` bugzilla-daemon
2013-05-18 19:41 ` bugzilla-daemon
2013-05-18 19:42 ` bugzilla-daemon
2013-06-01 22:44 ` bugzilla-daemon
2013-06-02 17:11 ` bugzilla-daemon
2013-06-02 17:11 ` bugzilla-daemon

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:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \

* 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 read-only IMAP folder(s) and NNTP newsgroup(s).