Hiroshi, It works! I used strace on ping.out and found out you need to be root to run it. You might add that to your HOWTO. See new HOWTO below. My device got made but it's 252 instead of 251. Not sure what that's about. > ls -al /dev/DspBridge crw-rw---- 1 root root 252, 0 2008-11-10 08:17 /dev/DspBridge Thanks very much for the help. Rick Updated OMAP3 DspBridge HOWTO: 1. First get the date of the most current patch. DATE=20081107 2. Do this on your host Linux box: git clone http://www.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git mkdir -p patches cd patches wget http://4869037.web.fc2.com/tidspbridge-$DATE.tgz tar xvzf tidspbridge-$DATE.tgz cd ../linux-omap-2.6 git am ../patches/*.patch make <your omap3 board>_defconfig # eg. omap3_beagle_defconfig make menuconfig # add the following options in the menuconfig ... CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE=14 # CONFIG_CBUS is not set CONFIG_MPU_BRIDGE=m # CONFIG_BRIDGE_DVFS is not set CONFIG_BRIDGE_DEBUG=y 3. You can get bridge sample binaries as below, put these on your target file system somewhere. Extract it somewhere on target rootfs. https://omapzoom.org/gf/download/frsrelease/132/632/dspbridge_binaries.tar.bz2 4. Make the modules and put them on the target rootfs. For example, on your host box do: cd linux-omap-2.6; tar czf ../modules.tar.gz `find . -name "*.ko"` 5. Then on the target do: sudo mkdir -p /lib/modules/`uname -r`/kernel/ sudo tar xzf modules.tar.gz -C /lib/modules/`uname -r`/kernel/ sudo depmod -a # if you don't have libbridge.so see http://elinux.org/BeagleBoard/gst-openmax # and do this on the target: sudo cp libbridge.so /lib sudo ln -s libbridge.so /lib/libbridge.so.2 # NOTE: set "PATH" below correctly sudo modprobe bridgedriver base_img=/PATH/ddspbase_tiomap3430.dof64P ls -al /dev/DspBridge # check to see that the device got made crw-rw---- 1 root root 252, 0 2008-11-10 08:53 /dev/DspBridge sudo /PATH/ping.out grep DspBridge /proc/interrupts # check to see that you have gotten some interrupts 26: 334 INTC DspBridge 28: 0 INTC DspBridge -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html