You'd need
CONFIG_DMA_OMAP=y
CONFIG_DMA_ENGINE=y

for this kernel.


On Mon, Apr 8, 2013 at 7:09 AM, hobbesc7 <hobbesc7@gmail.com> wrote:
I moved to 3.6, and the problem has gone away.  I'm now using the omap-3.6
branch of the linux-gumstix kernel (I'm using an overo however, and not a
duovero which is currently the default preferred machine for this kernel in
the current Yocto stuff, so I changed that.)

However, now my onboard SD card isn't recognized.  I flash my images to
NAND, and use the onboard SD card as storage only.

I can see the card isn't recognized by the kernel:

root@sbc:~# dmesg | grep mmc
[    4.252960] omap_hsmmc omap_hsmmc.0: Failed to get debounce clk
[    4.259246] omap_hsmmc omap_hsmmc.0: unable to obtain RX DMA engine
channel 62
[    4.267364] omap_hsmmc omap_hsmmc.1: Failed to get debounce clk
[    4.273895] omap_hsmmc omap_hsmmc.1: unable to obtain RX DMA engine
channel 48

I think my u-boot is fine, because if I switch back to 3.5 while keeping the
same u-boot, I get:

root@sbc:~# dmesg | grep mmc
[    4.210906] omap_hsmmc omap_hsmmc.0: Failed to get debounce clk
[    4.588806] omap_hsmmc omap_hsmmc.1: Failed to get debounce clk
[    4.826690] mmc0: host does not support reading read-only switch.
assuming write-enable.
[    4.852813] mmc0: new high speed SDHC card at address b368
[    4.875335] mmcblk0: mmc0:b368       7.45 GiB
[    4.882141]  mmcblk0: p1
[    4.933502] mmc1: new SDIO card at address 0001
[   11.912078] libertas_sdio: probe of mmc1:0001:1 failed with error -110

Any ideas?



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