> I've been running a kernel based on the Ubuntu 12.04 setup
> *repo: git://dev.omapzoom.org/pub/scm/integration/kernel-ubuntu.git*
> *tag: ti-ubuntu-3.4-1485.7*

> I'm running *gst-ducati* so I need the Ducati processors running,
> using *libdce*
> This was all working great, including the *gst-ducati* stuff.

> Here's what it looks like when I boot:

>     *[    5.593658] rproc remoteproc1: powering up ipu_c0*
>     *[    5.615020] rproc remoteproc0: Booting fw image
>     tesla-dsp.xe64T, size 481512*
>     *[    5.622650] omap-iommu omap-iommu.0: dsp: version 2.0*
>     *[    5.714447] rproc remoteproc0: remote processor dsp_c0 is now up*
>     *[    5.721343] rproc remoteproc1: Booting fw image
>     ducati-m3-core0.xem3, size 3134213*
>     *[    5.729888] omap-iommu omap-iommu.1: ipu: version 2.1*
>     *[    5.739105] virtio_rpmsg_bus virtio0: rpmsg host is online*
>     *[    5.745361] rproc remoteproc0: registered virtio0 (type 7)*
>     *[    5.902709] omap-rproc omap-rproc.0: received echo reply from
>     dsp_c0*
>     *[    5.919799] virtio_rpmsg_bus virtio0: creating channel
>     rpmsg-client-sample addr 0x32*
>     *[    5.928710] virtio_rpmsg_bus virtio0: creating channel
>     rpmsg-client-sample addr 0x33*
>     *[    5.941802] virtio_rpmsg_bus virtio0: creating channel
>     rpmsg-omx2 addr 0x3c*
>     *[    5.949981] rpmsg_omx rpmsg-omx2: new OMX connection srv
>     channel: 1024 -> 60!*
>     *[    6.088287] rproc remoteproc1: remote processor ipu_c0 is now up*
>     *[    6.100219] virtio_rpmsg_bus virtio1: rpmsg host is online*
>     *[    6.107269] rproc remoteproc1: registered virtio1 (type 7)*
>     *[    6.261962] EXT4-fs (mmcblk0p2): mounted filesystem with
>     ordered data mode. Opts: (null)*
>     *[    6.555572] omap-rproc omap-rproc.1: received echo reply from
>     ipu_c0*
>     *[    6.562408] virtio_rpmsg_bus virtio1: creating channel
>     rpmsg-dce addr 0x2a*
>     *[    6.570587] virtio_rpmsg_bus virtio1: creating channel
>     rpmsg-client-sample addr 0x32*
>     *[    6.579559] virtio_rpmsg_bus virtio1: creating channel
>     rpmsg-client-sample addr 0x33*
>     *
>     *

> Today, I tried upgrading to a newer kernel version.  I merged my
> kernel with
> *ti-ubuntu-3.4-1486.10* and now the Ducati processors no longer come up.

> Now, when  I boot, I get these messages when bringing up the DSP
> processors:

>     *[    5.976135] rproc remoteproc0: powering up dsp_c0*
>     *[    5.989074] rproc remoteproc0: Booting fw image
>     tesla-dsp.xe64T, size 481512*
>     *[    5.997436] omap-iommu omap-iommu.0: dsp: version 2.0*
>     *[    6.026794] rproc remoteproc0: remote processor dsp_c0 is now up*
>     *[    6.035705] virtio_rpmsg_bus virtio0: rpmsg host is online*
>     *[    6.041534] rproc remoteproc0: registered virtio0 (type 7)*
>     *[    6.071075] omap-rproc omap-rproc.0: received echo reply from
>     dsp_c0*
>     *[    6.687103] rproc remoteproc1: powering up ipu_c0*
>     *[    6.723724] rproc remoteproc1: Booting fw image
>     ducati-m3-core0.xem3, size 3134213*
>     *[    6.732482] omap-iommu omap-iommu.1: ipu: version 2.1*
>     *[    7.033416] rproc remoteproc1: remote processor ipu_c0 is now up*
>     *[    7.042785] virtio_rpmsg_bus virtio1: rpmsg host is online*
>     *[    7.048614] rproc remoteproc1: registered virtio1 (type 7)*
>     *[    7.498840] omap-rproc omap-rproc.1: received echo reply from
>     ipu_c0*
>     *[   11.034973] omap_iommu_update_latency Requested latency -1 but
>     limiting  DSP latency to 300 due to buggy firmware*

> Notice, no virtual channels created.  When I try to run the
> *gst-ducati* code, I now
> get this error:

>     *libdce.c:459: init    error: could not get plugin ioctl base: -22*

> My kernel config contains these [relevant] settings:

>     *CONFIG_DRM_OMAP=y*
>     *CONFIG_DRM_OMAP_NUM_CRTCS=2*
>     *CONFIG_RPC_OMAP=y*
>     *CONFIG_DRM_OMAP_DCE=y*
>     *# CONFIG_OMAP_RPMSG_RDAEMON is not set*
>     *CONFIG_REMOTEPROC=y*
>     *CONFIG_OMAP_REMOTEPROC=y*
>     *CONFIG_OMAP_REMOTEPROC_IPU=y*
>     *CONFIG_OMAP_REMOTEPROC_DSP=y*
>     *# CONFIG_OMAP_REMOTEPROC_WATCHDOG is not set*
>     *CONFIG_OMAP4_IPU_CMA_SIZE=0x6500000*
>     *CONFIG_OMAP5_IPU_CMA_SIZE=0xA100000*
>     *CONFIG_OMAP_DSP_CMA_SIZE=0x400000*
>     *CONFIG_RPMSG=y*
>     *CONFIG_RPMSG_RESMGR_FWK=y*
>     *CONFIG_RPMSG_RESMGR=y*
>     *CONFIG_OMAP_RPMSG_RESMGR=y*
>     *CONFIG_RPMSG_OMX=y*

> Only the two commented out options are different between the two
> kernel versions (these options are new).

> Any ideas what I'm missing?  Why don't the virtual channels get created?
> Note: I did change my bootargs to remove the hole in this latest
> version, so I'm booting with *mem=1G@0x80000000*
> *
> *