ae3cab78dc
Remove soft reset between frames, which was merely a workaround, actually replace it with something less aggressive: clearing of jpeg stream buffer pointer, via STM_CTRL[BITBUF_PTR_CLR]. According to the reference manual, the BITBUF_PTR_CLR is performed on context switch, but, per hardware team recommendation, it is also working without context switch, which is the case for this driver, for now. Without soft reset and without BITBUF_PTR_CLR, successive encoding jobs continue from where the previous left off, basically writing past the v4l2 buffer. Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com> Reviewed-by: Robert Chiras <robert.chiras@nxp.com> Reviewed-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.