[U-Boot] [PATCH v3] OMAP: I2C: New read, write and probe functions

[Tom Rini <trini@ti.com>]

On Thu, May 30, 2013 at 10:37:42AM -0400, Tom Rini wrote:
> On Thu, May 30, 2013 at 01:24:42AM +0300, Lubomir Popov wrote:
> 
> > Tested on OMAP4/5 only, but should work on older OMAPs and
> > derivatives as well.
> > 
> > - Rewritten i2c_read to operate correctly with all types of chips
> >   (old function could not read consistent data from some I2C slaves).
> > - Optimised i2c_write.
> > - New i2c_probe, optionally selectable via CONFIG_I2C_PROBE_WRITE,
> >   performs write access vs read. The old probe could hang the system
> >   under certain conditions (e.g. unconfigured pads).
> > - The read/write/probe functions try to identify unconfigured bus.
> > - Status functions now read irqstatus_raw as per TRM guidelines
> >   (except for OMAP243X and OMAP34XX).
> > - Driver now supports up to I2C5 (OMAP5).
> > 
> > Signed-off-by: Lubomir Popov <lpopov@mm-sol.com>
> 
> With CONFIG_I2C_PROBE_WRITE set:
> Tested-by: Tom Rini <trini@ti.com> on Beagleboard / Beagleboard xM

But, crap, breaks am335x_evm (and probably beaglebones, etc).  I'll
dig into this more to see if I can spot something obvious tomorrow.


-- 
Tom
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 836 bytes
Desc: Digital signature
URL: <http://lists.denx.de/pipermail/u-boot/attachments/20130530/01008034/attachment.pgp>