Hi Mauro,
> Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx> hat am 15. März 2017 um 15:01 geschrieben:
>
>
> Em Fri, 27 Jan 2017 13:54:57 -0800
> Eric Anholt <eric@xxxxxxxxxx> escreveu:
>
> > Here's my first pass at importing the camera driver. There's a bunch
> > of TODO left to it, most of which is documented, and the rest being
> > standard checkpatch fare.
> >
> > Unfortunately, when I try modprobing it on my pi3, the USB network
> > device dies, consistently. I'm not sure what's going on here yet, but
> > I'm going to keep working on some debug of it. I've unfortunately
> > changed a lot of variables (pi3 vs pi2, upstream vs downstream, vchi's
> > updates while in staging, 4.9 vs 4.4), so I probably won't figure it
> > out today.
> >
> > Note that the "Update the driver to the current VCHI API" patch will
> > conflict with the outstanding "Add vchi_queue_kernel_message and
> > vchi_queue_user_message" series, but the fix should be pretty obvious
> > when that lands.
> >
> > I built this against 4.10-rc1, but a merge with staging-next was clean
> > and still built fine.
>
> I'm trying it, building from the linux-next branch of the staging
> tree. No joy.
>
> That's what happens when I modprobe it:
>
> [ 991.841549] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.
> [ 991.842931] vchiq_get_state: g_state.remote == NULL
> [ 991.843437] vchiq_get_state: g_state.remote == NULL
> [ 991.843940] vchiq_get_state: g_state.remote == NULL
> [ 991.844444] vchiq_get_state: g_state.remote == NULL
> [ 991.844947] vchiq_get_state: g_state.remote == NULL
> [ 991.845451] vchiq_get_state: g_state.remote == NULL
> [ 991.845954] vchiq_get_state: g_state.remote == NULL
> [ 991.846457] vchiq_get_state: g_state.remote == NULL
> [ 991.846961] vchiq_get_state: g_state.remote == NULL
> [ 991.847464] vchiq_get_state: g_state.remote == NULL
> [ 991.847969] vchiq: vchiq_initialise: videocore not initialized
>
> [ 991.847973] mmal_vchiq: Failed to initialise VCHI instance (status=-1)
>
only a guess, but did you add the vchiq node to the device tree?
vchiq: vchiq@7e00b840 {
compatible = "brcm,bcm2835-vchiq";
reg = <0x7e00b840 0xf>;
interrupts = <0 2>;
cache-line-size = <32>;
firmware = <&firmware>;
};
For a Raspberry Pi 3 you will need cache-line-size to be 64.
Regards
Stefan
>
> Thanks,
> Mauro
>
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