Hi Javier,
Am Mittwoch, den 29.07.2015, 08:26 +0200 schrieb Javier Martin:
> Hello,
> I am running kernel 4.1 in a var-dvk-solo-linux evaluation board from
> Variscite.
>
> This is what I get at system start-up:
>
> coda 2040000.vpu: Firmware code revision: 34588
> coda 2040000.vpu: Initialized CODA960.
> coda 2040000.vpu: Unsupported firmware version: 2.1.8
> coda 2040000.vpu: codec registered as /dev/video[0-1]
So the firmware is basically running ...
> Apparently, the firmware is being loaded properly although it complains
> about that version not being supported.
>
> After queuing some YUV420 buffers with a simple application I perform a
> VIDIOC_STREAMON in both the CAPTURE and the OUTPUT interfaces but I get
> the following error:
>
> coda 2040000.vpu: coda is not initialized.
... but then suddenly it's not.
(coda_is_initialized just checks whether PC != 0)
Could this have something to do with the PU power domain? Do all coda
registers read 0x0 ?
Do you have CONFIG_PM disabled? Check if d438462c20a3 ("ARM: imx6: gpc:
always enable PU domain if CONFIG_PM is not set") makes a difference.
I think that patch hasn't made it into stable yet.
> ------------[ cut here ]------------
> WARNING: CPU: 0 PID: 91 at drivers/media/v4l2-core/videobuf2-core.c:1792
> vb2_start_streaming+0xe0/0x15c()
That is because after copying buffers to the bitstream, the driver
currently marks them as done. When start_streaming fails, videobuf2
expects drivers to re-queue them. So we'd have to flush the bitstream
and re-queue the buffers so they can be copied to the bitstream all over
during the next try.
This warning is a result of incomplete error handling in the coda
start_streaming implementation.
[...]
> ---[ end trace 2b0ba71bfb12fec4 ]---
>
> As anyone seen the same issue? Could be related to the "Unsupported
> firmware version" complaint?
I don't think so. That reminds me, I have used 2.1.9 on i.MX6Q without
issues. I still need have to test 3.1.1, but I think that should work,
too.
> Do you know where to get the 2.1.5 firmware for the i.MX6D?
It was part of the L3.0.35_12.09.01_GA Freescale BSP
(firmware-imx-12.09.01), but I don't think that is the issue. If PC==0
it doesn't even execute the firmware.
best regards
Philipp
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