Does SDBUS support multiple SDHC?

Hi All,

Currently I am developing a system wtih multiple SD host controller. I
meet some issues when card inserted and SD controller could not work
well.
As I looked into the source code, I found the sdhc controller dll has
been load several times and setup different objects for each
controller. But SDBUS only be loaded one time. Could this be the issue
to impact my design?

Any comments are welcome.

Thanks in advance.
-jimmy

Saki
Mon Mar 24 15:58:20 PDT 2008

yes the sd bus driver does support multiple instance of SD Host Controllers
and multiple instances of SD client drivers.

part of the purpose of the sd bus driver is to manage this type of scenario,
and you can always have only a single sd bus driver instance exists in your
system.

S.

"Carter" <helcat.hsiao@gmail.com> wrote in message
news:a331fa56-3c91-494c-9198-ef89f2071fb2@v3g2000hsc.googlegroups.com...
> Hi All,
>
> Currently I am developing a system wtih multiple SD host controller. I
> meet some issues when card inserted and SD controller could not work
> well.
> As I looked into the source code, I found the sdhc controller dll has
> been load several times and setup different objects for each
> controller. But SDBUS only be loaded one time. Could this be the issue
> to impact my design?
>
> Any comments are welcome.
>
> Thanks in advance.
> -jimmy