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Marc,<BR>
<BR>
I'm going to implement something similar to what you've suggested, but like this:<BR>
<BR>
iprobe <chip>[.1, .2]...<BR>
<BR>
instead of<BR>
<BR>
iprobe[.1, .2] <chip> ...<BR>
<BR>
This 2-controller support will be conditionally compiled if CONFIG_I2C_2_CTRLS is defined. I should have some code to share this afternoon.<BR>
<BR>
regards,<BR>
Ben<BR>
<BR>
On Fri, 2006-05-12 at 12:37 -0700, Howard, Marc wrote:
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<FONT COLOR="#000000">> On May 12, 2006, at 9:36 AM, Ben Warren wrote:</FONT>
<FONT COLOR="#000000">> </FONT>
<FONT COLOR="#000000">> > Hello,</FONT>
<FONT COLOR="#000000">> ></FONT>
<FONT COLOR="#000000">> > The CPU I'm using (MPC8349) has two hardware I2C interfaces, and </FONT>
<FONT COLOR="#000000">> > I'd like to access the second one in U-boot. Implementing this </FONT>
<FONT COLOR="#000000">> > looks easy to me, but I don't want to reinvent the wheel if it's </FONT>
<FONT COLOR="#000000">> > already been done elsewhere. Has anyone done this? If not, I'll </FONT>
<FONT COLOR="#000000">> > follow up with a proposal.</FONT>
<FONT COLOR="#000000">> </FONT>
<FONT COLOR="#000000">> Depending on what you want to do, you can cheat and just change the </FONT>
<FONT COLOR="#000000">> pointer to the 2nd interface. If you want something more full </FONT>
<FONT COLOR="#000000">> featured up to the command level then I think some discussion would </FONT>
<FONT COLOR="#000000">> be required on how the commands should work for specifying which </FONT>
<FONT COLOR="#000000">> controller to use.</FONT>
<FONT COLOR="#000000">> </FONT>
<FONT COLOR="#000000">> - kumar</FONT>
<FONT COLOR="#000000">OK, just as a suggestion how about an optional suffix on all the I2C</FONT>
<FONT COLOR="#000000">commands. Ex:</FONT>
<FONT COLOR="#000000">iprobe.2 -- discover valid I2C interfaces on controller #2.</FONT>
<FONT COLOR="#000000">imw.0 (or just imw) -- memory write to address on controller #0 (or the</FONT>
<FONT COLOR="#000000">only controller in most cases).</FONT>
<FONT COLOR="#000000">Seems like it wouldn't break anything to specify the controller this</FONT>
<FONT COLOR="#000000">way.</FONT>
<FONT COLOR="#000000">Marc W. Howard</FONT>
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