Platform: i.mx8qm/qxp OS: imx-yocto-L4.14.98_2.0.0_ga Camera: max9286 deserializer <=> max96705 serializer  + ar0144 or: max9286 deserializer <=> max96705 serializer + ov9284 Note that currently only one camera is support and the serializer should be connected to the IN0 of max9286. Data format: ar0144: mono raw 12bit. ov9284: mono raw 10bit. On imx8qm/qxp the data will be recieved as raw 16bit and the valid data bit start from bit[13] to LSB. for mono raw 12bit the valid data bit is 0bxxdd_dddd_dddd_ddxx for mono raw 10bit the valid data bit is 0bxxdd_dddd_dddd_xxxx max9286 and max96705 configuration: dbl bws PXL_CRC/edc hven hibw lccen him should be the same on both sides, this can be achieved by pin or register configurations. The crossbar function of max96705 can be used to fix the reversed data bit. for example, reversed 12bit with dbl to 1. 0x20 0xb 0x21 0xa 0x22 0x9 ....... 0x2b 0x0 0x30 0xb 0x31 0xa .... 0x3b 0x0 0x20 to 0x2b and 0x30 to 0x3b are the registers of max96705. Patch apply: 1. push the kernel-patch to the kernel source and apply it. 2. reconfig the kernel setting, make sure there is only CONFIG_MAX9286_AR0144 or        CONFIG_MAX9286_WISSEN(ov9284) enabled, all other max9286 related are disabled. You can run menuconfig to achieve this. 3. For testing copy the vulkan-v4l2.tar to the board, and run vulkan-v4l2.     the source code is at https://github.com/sheeaza/vulkan-v4l2 branch ar0144 for ar0144, branch ov9284 for ov9284. =========== updated patch for data format.

Most i.MX8QXP/QM customers already work on L4.14.98 GA for their Auto product, like C-V2X TBOX, Car infortainment system. Some customers also want to adopt OP-TEE in their security design, but OP-TEE on i.MX8QXP/QM platform don't support HW cryptography accelerating which base on CAAM module. So I worked on the issue last week and fixed it. The package meta-optee-add-on_4.14.98_2.0.0_ga.tgz is Yocto layer which includes all patches for fixing the issue. Software environments as the belows: Linux kernel: imx_4.14.98_2.0.0_ga HW platform:  i.MX8QM/QXP MEK. How to build: 1, decompress meta-optee-add-on_4.14.98_2.0.0_ga.tgz and copy meta-optee-add-on to folder (Yocto 4.14.98_2.0.0_ga dir)/sources/ 2, Run DISTRO=fsl-imx-wayland MACHINE=imx8qxpmek source fsl-setup-release.sh -b build-optee and add BBLAYERS += " ${BSPDIR}/sources/meta-optee-add-on " into (Yocto 4.14.98_2.0.0_ga dir)/build-optee/conf/bblayers.conf  3, Run bitbake fsl-image-validation-imx. 4, You can run xtest or xtest -l 1 4007 on your MEK board to test optee crypto feature after completing build image. You can find it only take about one second comparing no CAAM accelerating when test "regression_4007.11 Generate RSA-2048 key".

This document provide an overall guide how to get started with i.MX6 development. There are several chapters: 1. how to get necessary docs from freescale website; 2. how to setup environment and build your own images;3. Hardware design consideration;4. How to get help. I hope the doc will bring you in i.MX world more easily, and hope you all have a fun in it.

This is the procedure and patch to set up Ubuntu 13.10 64bit Linux Host PC and building i.MX6x L3.0.35_4.1.0. It has been tested to build GNOME profile and with FSL Standard MM Codec for i.MX6Q SDB board. A) Basic Requirement: Set up the Linux Host PC using ubuntu-13.10-desktop-amd64.iso Make sure the previous LTIB installation and the /opt/freescale have been removed B) Installed the needed packages to the Linux Host PC $ sudo apt-get update $ sudo apt-get install gettext libgtk2.0-dev rpm bison m4 libfreetype6-dev $ sudo apt-get install libdbus-glib-1-dev liborbit2-dev intltool $ sudo apt-get install ccache ncurses-dev zlib1g zlib1g-dev gcc g++ libtool $ sudo apt-get install uuid-dev liblzo2-dev $ sudo apt-get install tcl dpkg $ sudo apt-get install asciidoc texlive-latex-base dblatex xutils-dev $ sudo apt-get install texlive texinfo $ sudo apt-get install lib32z1 lib32ncurses5 lib32bz2-1.0 $ sudo apt-get install libc6-dev-i386 $ sudo apt-get install u-boot-tools $ sudo apt-get install scrollkeeper $ sudo apt-get install gparted $ sudo apt-get install nfs-common nfs-kernel-server $ sudo apt-get install git-core git-doc git-email git-gui gitk $ sudo apt-get install meld atftpd $ sudo ln -s /usr/lib/x86_64-linux-gnu/librt.so   /usr/lib/librt.so C) Unpack and install the LTIB source package and assume done on the home directory: $ cd ~ $ tar -zxvf L3.0.35_4.1.0_130816_source. tar.gz $ ./L3.0.35_4.1.0_130816_source/install      After that, you will find ~/ltib directory created D) Apply the patch to make L3.0.35_4.1.0 could be installed and compiled on Ubuntu 13.10 64bit OS $ cd ~/ltib $ git apply 0001_make_L3.0.35_4.1.0_compile_on_Ubuntu_13.10_64bit_OS.patch What the patch is doing: a) The patch modifies the following files:    dist/lfs-5.1/base_libs/base_libs.spec    dist/lfs-5.1/m4/m4.spec    dist/lfs-5.1/ncurses/ncurses.spec b) Add the following files to the pkgs directory:    pkgs/m4-1.4.16-1383761043.patch    pkgs/m4-1.4.16-1383761043.patch.md5 E) Then, it is ready to proceed the rest of the LTIB env setup process: $ cd ~/ltib $ ./ltib -m config $ ./ltib Reference: L3.0.35_4.1.0_130816_docs/doc/mx6/Setting_Up_LTIB_host.pdf https://community.freescale.com/message/332385#332385 https://community.freescale.com/thread/271675 https://community.freescale.com/message/360556#360556 m4 compilation issue: 1. https://github.com/hashdist/hashstack/commit/f6be2a58de62327d05e052d89c9aa931d4c926b3 2. https://github.com/hashdist/hashstack/issues/81 rpm-fs package failed to build issue: https://community.freescale.com/message/355771#355771 scrollkeeper is for the gnome-desktop compilation NOTE: When compiling gstreamer, this warning was pop up.  Just ignore it seems okay.

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-343715 

The i.MX 6 D/Q L3.035_1.0.3 patch release is now available on www.freescale.com ·         Files available # Name Description 1 L3.0.35_1.0.3_TEMP_PFD_PATCH This patch release is based on the i.MX 6Dual/6Quad Linux   12.09.01 release. The purpose of this patch release is update thermal sensor   calibration routine and correct the PFD workflow in U-Boot. More details in   the release notes.

gst-launch is the tool to execute GStreamer pipelines. Task Pipeline Looking at caps gst-launch -v  <gst elements> Enable log gst-launch --gst-debug=<element>:<level> gst-launch --gst-debug=videotestsrc:5 videotestsrc ! filesink location=/dev/null

Basic Linear Algebra Subprograms (BLAS) is a specification that prescribes a set of low-level routines for performing common linear algebra operations such as vector addition, scalar multiplication, dot products, linear combinations, and matrix multiplication. OpenBLAS is an optimized BLAS library which is uesd for deep learning accelerator in Caffe/Caffe2. I enable it in Yocto (Rocko) by adding bb file. And I build on i.MX6QP, i.MX7ULP and i.MX8MQ and also run its test example successfully. You can find test example(openblas_utest) under folder image/opt/openblas/bin of OpenBLAS work directory. Currently, version 0.3.0 is supported in the bb file. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ update to v 0.3.6 and enable mutli-thread by set USE_OPENMP=1 and USE_THREAD=4 when compiling this library.

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-341641 

When working with IPU applications, sometimes image format converter is needed to check images generated by IPU that are not readable by PC (e.g. RGB565, common i.MX framebuffer format -> png or jpg) or generate a RGB picture from an encoded file to be read by IPU (e.g. png -> RGB565 framebuffer). There are some useful tools on Linux and some also available on Windows that can perform these conversions. I listed 5 tools with some usage examples below. IMAGEMAGICK // Display a 800x600 rgb image display -size 800x600 -depth 8 rgb:output.rgb // Show information of output.rgb identify -size 1296x972 -depth 8 output.rgb // Convert a 640x480 grayscale raw rgb file to png convert -size 640x480 -depth 8 imagefile.rgb image.png // To list all available color formats identify -list format For more information about Imagemagick and its format support. access: http://www.imagemagick.org/script/formats.php FFMPEG // List available formats for ffmpeg ffmpeg -pix_fmts // Convert raw rgb565 image to png ffmpeg -vcodec rawvideo -f rawvideo -pix_fmt rgb565 -s 1024x768 -i freescale_1024x768.raw -f image2 -vcodec png screen.png // Convert png to raw rgb565 ffmpeg -vcodec png -i image.png -vcodec rawvideo -f rawvideo -pix_fmt rgb565 image.raw // Convert a 720x480 NV12 (YUV 420 semi-planar) image to png ffmpeg -s 720x480 -pix_fmt nv12 -i image-nv12.yuv -f image2 -pix_fmt rgb24 image-png.png // Convert a 640x480 uyvy422 image to png ffmpeg -s 640x480 -pix_fmt uyvy422 -i image-uyvy422.yuv -f image2 -pix_fmt rgb24 image-uyvy422.png MENCODER http://www.mplayerhq.hu/DOCS/HTML/en/encoding-guide.html TRANSCODING http://www.transcoding.org/cgi-bin/transcode?Examples GRAPHICSMAGICK http://www.graphicsmagick.org/

The Linux L4.9.51 and SDKv2.3 for i.MX 8MQuad(mScale850D) RFP(GA) release files are now available. Linux on IMX_SW web page, Overview -> BSP Updates and Releases ->Linux L4.9.51 for i.MX 8MQuad GA. SDK on https://mcuxpresso.nxp.com/ web page.   Files available: Linux: # Name Description 1 fsl-yocto-L4.9.51_mx8mq-ga.tar.gz L4.9.51 i.MX 8MQuad GA Linux BSP Documentation. Includes Release Notes, User Guide. 2 L4.9.51-ga_images_mx8mq.tar.gz Linux Binary Demo files for i.MX 8MQuad EVK 3 L4.9.51_8mq-ga_mfg-tools.tar.gz Manufacturing Toolkit for Linux L4.9.51 i.MX8MQuad GA 4 L4.9.51_8mq-ga_gpu-tools.tar.gz VivanteVTK file for L4.9.51 i.MX8MQuad GA 5 imx-aacpcodec-4.3.4.tar.gz AAC Plus Codec for L4.9.51 of iMX 8MQuad GA   SDK:   On https://mcuxpresso.nxp.com/, click the Select Development Board to customize the SDK based on your configuration then download the SDK package. CMSIS pack is also supported.   Target board: i.MX 8MQuad EVK   What’s New/Features: Please consult the Release Notes.   Known issues For known issues and more details please consult the Release Notes.   More information on changes of Yocto, see: README: https://source.codeaurora.org/external/imx/imx-manifest/tree/README?h=imx-linux-morty ChangeLog: https://source.codeaurora.org/external/imx/imx-manifest/tree/ChangeLog?h=imx-linux-morty  

OpenCV is a computer vision library originally developed by Intel. It is free for commercial and research use under the open source BSD license. The library is cross-platform. It focuses mainly on real-time image processing; as such, if it finds Intel's Integrated Performance Primitives on the system, it will use these commercial optimized routines to accelerate itself. Application OpenCV's application areas include: * 2D and 3D feature toolkits * Egomotion estimation * Face Recognition * Gesture Recognition * Human-Computer Interface (HCI) * Mobile robotics * Motion Understanding * Object Identification * Segmentation and Recognition * Stereopsis Stereo vision: depth perception from 2 cameras * Structure from motion (SFM) * Motion Tracking To support some of the above areas, OpenCV includes a statistical machine learning library that contains: * Boosting * Decision Trees * Expectation Maximization * k-nearest neighbor algorithm * Naive Bayes classifier * Artificial neural networks * Random forest * Support Vector Machine Installing OpenCV on i.MX 51 EVK Board running Ubuntu Linux Assuming that you already have the Ubuntu Linux running on your board, you can use this wiki page to guide you to get your USB camera running on your system in order to use real time image processing features of this library. In a brand new installation of Ubuntu some libraries is not installed by default, so you need to install them by your own hands (use synaptic to do that), here is the list of these libraries: libgtk2.0-dev libjpeg62-dev zlib1g-dev libpng12-dev libtiff4-dev libjasper-dev libgst-dev libgstreamer0.10-dev If you already have some of those libraries installed, make sure that is the DEV version. After installing those libraries you can download the stable OpenCV version here. Install it following the procedure below: 1 - untar the opencv package tar -xvzf opencv-1.1pre1.tar.gz  2 - change to OpenCV folder cd opencv-1.1.0  3 - configure the installation enabling gstreamer and letting to compile demo apps later ./configure --with-gstreamer --disable-apps You will get the following results: General configuration ================================================       Compiler:                         g++       CXXFLAGS:       DEF_CXXFLAGS:             -Wall -fno-rtti -pipe -O3 -fomit-frame-pointer       PY_CXXFLAGS:               -Wall -pipe -O3 -fomit-frame-pointer       OCT_CXXFLAGS:             -fno-strict-aliasing -Wall -Wno-uninitialized -pipe -O3 -fomit-frame-pointer        Install path:                      /usr/local  HighGUI configuration ================================================       Windowing system --------------       Use Carbon / Mac OS X:        no       Use gtk+ 2.x:                        yes       Use gthread:                         yes       Image I/O ---------------------       Use ImageIO / Mac OS X:       no       Use libjpeg:                            yes       Use zlib:                                yes       Use libpng:                             yes       Use libtiff:                               yes       Use libjasper:                          yes       Use libIlmImf:                          no             Video I/O ---------------------       Use QuickTime / Mac OS X:     no       Use xine:                                no       Use gstreamer:                        yes       Use ffmpeg:                             no       Use dc1394 & raw1394:     no       Use v4l:                                   yes       Use v4l2:                                 yes       Use unicap:                             no     Wrappers for other languages =========================================       SWIG Python                          no       Octave                                    no       Additional build settings ============================================       Build demo apps                      no Now run make ... 4 - Build OpenCV ./make 5 - Install OpenCV ./sudo make install if all steps above were executed properly, now you can compile the sample applications: 1 - change to samples/c directory cd samples/c 2 - change the build_all script mode to +x chmod +x build_all.sh 3 - run the script ./build_all.sh Now you can test. The results below were taken from the Laplacian filter sample processing in real-time images grabbed from an USB camera: Laplacian filter with USB Camera capture device Also, you can see how is it performance on a 3 windowed application performing color conversion and canny edge detection at the same time: http://www.youtube.com/watch?v=w9yQgdABT7c EOF !

Using a USB Touchscreen on Ubuntu   This example uses a XENARC 706TSA monitor http://www.xenarc.com/product/706tsa.html To use a USB touchscreen on i.MX51 EVK, disable all touchscreen drivers on menuconfig and build the kernel: Device Drivers  --->        Input device support  --->        [ ]   Touchscreens  ---> Download xserver-xorg-input-evtouch (0.8.8-ubuntu3 version) from http://launchpadlibrarian.net/24760784/xserver-xorg-input-evtouch_0.8.8-0ubuntu3_armel.deb. X crash is found if using latest 0.8.8-ubuntu6.1 version. For the details. See https://bugs.launchpad.net/ubuntu/+source/xf86-inputevtouch/+bug/511491 On MX51 EVK board, run “sudo dpkg –i xserver-xorg-input-evtouch_0.8.8-0ubuntu3_armel.deb” to install debian package. Add fdi file by "sudo vi ./usr/share/hal/fdi/policy/20thirdparty/50-eGalax.fdi": <?xml version="1.0" encoding="UTF-8"?> <deviceinfo version="0.2">    <device>       <match key="info.product" contains="eGalax">          <match key="info.capabilities" contains="input">             <merge key="input.x11_driver" type="string">evtouch</merge>             <merge key="input.x11_options.minx" type="string">130</merge>             <merge key="input.x11_options.miny" type="string">197</merge>             <merge key="input.x11_options.maxx" type="string">3945</merge>             <merge key="input.x11_options.maxy" type="string">3894</merge>             <merge key="input.x11_options.Rotate" type="string">CCW</merge>             <merge key="input.x11_options.Swapy" type="string">true</merge>             <merge key="input.x11_options.taptimer" type="string">30</merge>             <merge key="input.x11_options.longtouchtimer" type="string">750</merge>             <merge key="input.x11_options.longtouched_action" type="string">click</merge>             <merge key="input.x11_options.longtouched_button" type="string">3</merge>             <merge key="input.x11_options.oneandhalftap_button" type="string">2</merge>             <merge key="input.x11_options.movelimit" type="string">10</merge>             <merge key="input.x11_options.touched_drag" type="string">1</merge>             <merge key="input.x11_options.maybetapped_action" type="string">click</merge>             <merge key="input.x11_options.maybetapped_button" type="string">1</merge>          </match>       </match>    </device> </deviceinfo> Save above configuration. Calibrating Calibration in made by clicking on System -> Administration -> Calibrate Touchscreen Follow the on screen instructions and reboot the system. Calibrating using Xinput Calibrator Xinput_calibrator is another option to calibrate touchscreen. It can be downloaded at: http://www.freedesktop.org/wiki/Software/xinput_calibrator On i.MX5x Ubuntu, unpack the source code: tar -xzvf xinput_calibrator-0.7.5.tar.gz Install xorg-dev, it's required to build xinput_calibrator sudo apt-get install xorg-dev Configure, build and install xinput_calibrator ./configure ./make ./make install Execute xinput_calibrator. A four-point calibration screen will be shown. Follow the instructions on screen and after complete xinput_calibrator will return the calibration parameters. Replace the given calibration parameters on file /usr/share/hal/fdi/policy/20thirdparty/50-eGalax.fdi and reboot the system.

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-341570 

This example uses the touchscreen that comes with i.MX51 EVK's parallel LCD Download xserver-xorg-input-evtouch (xserver-xorg-input-evtouch_0.8.8-3build1_armel.deb) from https://launchpad.net/ubuntu/lucid/armel/xserver-xorg-input-evtouch/0.8.8-3build1 On i.MX51 EVK board, run “sudo dpkg –i xserver-xorg-input-evtouch_0.8.8-3build1_armel.deb” to install debian package. Remove evdev config file: sudo rm /usr/lib/X11/xorg.conf.d/05-evdev.conf Change the content of 10-evtouch.conf to: sudo vi /usr/lib/X11/xorg.conf.d/10-evtouch.conf Section "InputClass"            Identifier "touchscreen catchall"            MatchIsTouchscreen "on"            Driver "evtouch"            Option "SwapY" "1"            Option "MinX" "32"            Option "MinY" "46"            Option "MaxX" "1001"            Option "MaxY" "967" EndSection   The MinX, MinY, MaxX and MaxY values can be changed to match the exact configuration of your touchscreen Save above configuration and reboot the system.

i.MX6DQ HDMI dongle board uses BCM4330 which is SDIO interface as wireless module. When we try to run Ubuntu oneiric on HDMI dongle board, after correctly insmod bcm4330.ko, we found Ubuntu NetworkManger can't recognize this interface: the /var/log/syslog shows the following error: Jan  1 00:01:08 linaro-ubuntu-desktop NetworkManager[4787]:    SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/wlan0, iface: wlan0) Jan  1 00:01:08 linaro-ubuntu-desktop NetworkManager[4787]:    SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/wlan0, iface: wlan0): no ifupdown configuration found. Jan  1 00:01:08 linaro-ubuntu-desktop NetworkManager[4787]: <warn> /sys/devices/virtual/net/wlan0: couldn't determine device driver; ignoring... After using Google search, we found /sys/devices/virtual/net/wlan0 directory dose not has directory "device", this "device" directory should be exist at network interface, without it, NetworkManager will get error "couldn't determine device driver; ignoring...",  the "device" is just this network interface come from, and it should link to the real device under one hardware bus. While the bcm4330 Linux driver from Broadcom does not setup network interface real "device" so we need add this real "device" before the driver registers a network interface. Refer to the attached diff file for this modification

The OpenSSL recipe halts saying it can't find find.pl . How to resolve this problem?   From the blog, linked below : create file find.pl in /etc/perl.   Missing find.pl compiling OE - Kemp's blog    "find.pl" content :   warn "Legacy library @{[(caller(0))[6]]} will be removed from the Perl core distribution in the next major release. Please install it from the CPAN distribution Perl4::CoreLibs. It is being used  at @{[(caller)[1]]}, line @{[(caller)[2]]}.\n";   # This library is deprecated and unmaintained. It is included for # compatibility with Perl 4 scripts which may use it, but it will be # removed in a future version of Perl. Please use the File::Find module # instead.   # Usage: #              require "find.pl"; # #              &find('/foo','/bar'); # #              sub wanted { ... } #                            where wanted does whatever you want. $dir contains the #                            current directory name, and $_ the current filename within #                            that directory. $name contains "$dir/$_". You are cd'ed #                            to $dir when the function is called. The function may #                            set $prune to prune the tree. # # For example, # # find / -name .nfs\* -mtime +7 -exec rm -f {} \; -o -fstype nfs -prune # # corresponds to this # #              sub wanted { #               /^\.nfs.*$/ && #               (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) && #               int(-M _) > 7 && #               unlink($_) #               || #               ($nlink || (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_))) && #               $dev < 0 && #               ($prune = 1); #              } # # Set the variable $dont_use_nlink if you're using AFS, since AFS cheats.   use File::Find ();   *name                            = *File::Find::name; *prune                            = *File::Find::prune; *dir                            = *File::Find::dir; *topdir                            = *File::Find::topdir; *topdev                            = *File::Find::topdev; *topino                            = *File::Find::topino; *topmode              = *File::Find::topmode; *topnlink              = *File::Find::topnlink;   sub find {   &File::Find::find(\&wanted, @_); }   1;

On power-up of a system, the bootloader performs initial hardware configuration, and is responsible for loading the Linux kernel in memory. Several bootloaders are available which support i.MX SoCs: Barebox (http://www.barebox.org/) RedBoot (http://ecos.sourceware.org/redboot/) U-Boot (http://www.denx.de/wiki/U-Boot/) Qi (http://wiki.openmoko.org/wiki/Qi)