sdhc/mpc8536 - SDCard always detected like read-only - SOLVED.

Wolfram Sang w.sang at
Thu Apr 7 14:51:37 EST 2011

> Reading the MPC8536E Chip Errata I saw the SDHC_WP signal polarity is 
> reversed to the silicon revision 1.0.
> Unfortunately my prototype board  is using revision 1.0. So, I asked to
> my hardware team workaround putting an extra inverter for the SDHC_WP
> signal.
> Now its working fine!

OK, nice. I fail to see from a glimpse how all this is related to the
timeout-errors you were seeing (-110), but if it works now, all is fine, I



Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 |  |
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 197 bytes
Desc: Digital signature
URL: <>

More information about the Linuxppc-dev mailing list