Dear all, according to AM335xx TRM, a beaglebone black should have 3 mmc available: -> mmc0 (sd card) -> mmc1 (2G flash) -> mmc2.
I am trying to enable mmc2 by device tree (and I am quite sure to have the right pin settings) but, by doing dmesg I obtain: /ocp/mmc@47810000: can't find DMA channel omap_hsmmc mmc.11: unable to obtain RX DMA engine channel 65 By putting the oscilloscope probe on the header (e.g. the mmc2_clk signal), I do not see any transition. I already removed R 160 to have mmc2_cmd accessible but I do not see any transition also there. I tried both to enable it by echo > /sys/devices/..../slots and by "capemgr.enable_partno" with no success: I can see it in /sys/devices/..../slots (with the L meaning loaded)..but no way to see any signal on the header. I already googled it but answers are not clear at all. Did someone have success where I am failing? My uname -a is: Linux beaglebone 3.8.13 #1 SMP Tue Jun 18 02:11:09 EDT 2013 armv7l GNU/Linux Thanks for your help. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
