From: Michael Durrant <mdurrant@arcturusnetworks.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] ColdFire I2C implementing I2C idle [PATCH]
Date: Tue, 19 Jan 2010 15:50:14 -0500 [thread overview]
Message-ID: <4B561B06.7020204@arcturusnetworks.com> (raw)
Signed-off-by: David Wu <davidwu@arcturusnetworks.com>
Signed-off-by: Michael Durrant <mdurrant@arcturusnetworks.com>
Patch created against u-boot-2009.11 release
drivers_i2c_fsl_i2c.patch
- need to set I2C to be idle acoording to the MCF5282 user's manual
If I2SR[IBB] is set when the I2C bus module is enabled,
execute the following code sequence before proceeding with
normal initialization code. This issues a STOP command to the
slave device, placing it in idle state as if it were just
power-cycled on.
I2CR = 0x0
I2CR = 0xA
dummy read of I2DR
I2SR = 0x0
I2CR = 0x0
--
Michael Durrant
mdurrant at arcturusnetworks.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: drivers_i2c_fsl_i2c.patch
Type: application/octet-stream
Size: 1005 bytes
Desc: not available
Url : http://lists.denx.de/pipermail/u-boot/attachments/20100119/6b191970/attachment.obj
next reply other threads:[~2010-01-19 20:50 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-19 20:50 Michael Durrant [this message]
2010-01-20 8:26 ` [U-Boot] ColdFire I2C implementing I2C idle [PATCH] Heiko Schocher
2010-01-20 18:33 ` [U-Boot] ColdFire I2C implementing I2C idle [PATCH] -- resent in git format Michael Durrant
2010-01-21 7:25 ` Heiko Schocher
2010-01-21 7:41 ` Joakim Tjernlund
2010-01-21 8:04 ` Heiko Schocher
2010-01-21 10:29 ` Wolfgang Wegner
2010-01-21 11:49 ` Heiko Schocher
2010-01-21 17:49 ` Michael Durrant
2010-01-25 8:17 ` Heiko Schocher
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=4B561B06.7020204@arcturusnetworks.com \
--to=mdurrant@arcturusnetworks.com \
--cc=u-boot@lists.denx.de \
/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.