<div dir="ltr"><span style="font-family:arial,sans-serif;font-size:14px">>>This is on purpose; the U-Boot code is board specific so you need to</span><br style="font-family:arial,sans-serif;font-size:14px"><span style="font-family:arial,sans-serif;font-size:14px">>>make a board configuration and initialization (on the board file)</span><br style="font-family:arial,sans-serif;font-size:14px"><span style="font-family:arial,sans-serif;font-size:14px">>>according to your board layout.</span><div><span style="font-family:arial,sans-serif;font-size:14px"><br></span></div><div><span style="font-family:arial,sans-serif;font-size:14px">Thanks, I will create a recipe for what I wanna modify.</span></div><div><span style="font-family:arial,sans-serif;font-size:14px"><br></span></div><div><font face="arial, sans-serif"><span style="font-size:14px">I found I have make a mistake: </span></font><span style="font-family:arial,sans-serif;font-size:14px">uboot  in yocto(version v2014.01-r0) initialize usdhc2~4, and skip usdhc1. not usdhc4.</span></div><div><br></div><div>so my device had change it's number from "mmc dev 3" to "mmc dev 2".</div><div><br></div><div>Wally</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-09-07 2:15 GMT+08:00 Otavio Salvador <span dir="ltr"><<a href="mailto:otavio@ossystems.com.br" target="_blank">otavio@ossystems.com.br</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On Sat, Sep 6, 2014 at 1:39 PM, Wally Yeh <<a href="mailto:wally.yeh@atrustcorp.com">wally.yeh@atrustcorp.com</a>> wrote:<br>
> Dear All:<br>
>Â Â Â hello, I have a custom board for i.mx6Q, it have almost the same layout<br>
> with mx6q_sabresd board. this board attach one eMMC on it's usdhc4 port(so<br>
> It will locate in mmc dev 3 in uboot).<br>
><br>
>Â Â Â Since I change uboot form SDK_3.0.35 to yocto. my board can't recognize<br>
> mmc dev 3 anymore.<br>
><br>
>   I notice uboot in yocto(version v2014.01-r0) just initialize usdhc1~3,<br>
> and skip usdhc4.<br>
><br>
>Â Â Â Does this is a design on purpose or an issue need to fix?<br>
<br>
</div></div>This is on purpose; the U-Boot code is board specific so you need to<br>
make a board configuration and initialization (on the board file)<br>
according to your board layout.<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Otavio Salvador               O.S. Systems<br>
<a href="http://www.ossystems.com.br" target="_blank">http://www.ossystems.com.br</a>Â Â Â Â <a href="http://code.ossystems.com.br" target="_blank">http://code.ossystems.com.br</a><br>
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