Qt Creator can be a very good IDE in order to develop great QT applications. This IDE does not only helps with syntax highlighting, access to examples and tutorials, but also helps you to configure different toolchains Qt binary versions and target options. First download the binary installer from: For 32 bits: $ wget http://releases.qt-project.org/qtcreator/2.6.2/qt-creator-linux-x86-opensource-2.6.2.bin For 64 bits: $ wget http://releases.qt-project.org/qtcreator/2.6.2/qt-creator-linux-x86_64-opensource-2.6.2.bin execute the binary $ ./qt-creator-linux-x86_64-opensource-2.6.2.bin Follow the Installer GUI and choose a location. Default options should be OK. in my case the installation was done here: $ /home/b35153/qtcreator-2.6.2/bin Open Qt Creator (in my case from command line, use "&" to regain control of the terminal) $./qtcreator & Open Tools -> Options Choose Build & Run  on the menu of the left. and Select the Compilers Tab Here you can add the toolchain GCC compiler of your convenience. It will appear in the "Manual"  section. Now click on Qt Version Tab.  Here you can add the Qmake that you had created with your Qt installation; for example, the Qt5 installation described here: Building QT for i.MX6 It will appear in the Manual section. In my case I have Qmake for PC and Qmake for i.MX6. Now click on Kits Tab Here you can create combinations of Compilers and Qmake, and also specify where do you want the executables to go. In my case here I combined the i.MX6 toolchain and the Qmake for I.MX6 i had created. I did not set up device configuration since the sysroot is already shared to my device via NFS, but you can configure it so the files are sent via ssh to your device. And that's It! Next time you load a project you can choose which Kit you want to work on, and it will be compiled just as you need.

1. Set up HDMI Set up your kernel to use HDMI adding the following code to bootargs on u-boot: video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24 2. Test raw audio In order to test only raw audio, use the following command: aplay -D hw:1,0 Kaleidoscope.wav 3. Make HDMI audio the default output In order to configure audio output over HDMI, please, replace content of file ~/.asoundrc to the following one pcm.dmix_48000{      type dmix      ipc_key 5678293      ipc_key_add_uid yes      slave{           pcm "hw:1,0"           period_time 0           period_size 2048           buffer_size 24576           format S16_LE           rate 48000      } } pcm.!dsnoop_44100{      type dsnoop      ipc_key 5778293      ipc_key_add_uid yes      slave{           pcm "hw:0,0"           period_time 0           period_size 2048           buffer_size 24576           format S16_LE           rate 44100      } } pcm.!dsnoop_48000{      type dsnoop      ipc_key 5778293      ipc_key_add_uid yes      slave{           pcm "hw:1,0"           period_time 0           period_size 2048           buffer_size 24576           format S16_LE           rate 48000      } } pcm.asymed{      type asym      playback.pcm "dmix_48000"      capture.pcm "dsnoop_44100" } pcm.dsp0{      type plug      slave.pcm "asymed" } pcm.!default{      type plug      route_policy "average"      slave.pcm "asymed" } ctl.mixer0{      type hw      card 0 } This will configure alsa to use sound card hw:1,0. Please, pay attention to use the proper audio card name for your device. In order to see available sound cards on board: root@imx53qsb:~# aplay -l **** List of PLAYBACK Hardware Devices **** card 0: imx3stack [imx-3stack], device 0: SGTL5000 SGTL5000-0 []   Subdevices: 1/1   Subdevice #0: subdevice #0 card 1: imx3stackspdif [imx-3stack-spdif], device 0: IMX SPDIF mxc spdif-0 []   Subdevices: 1/1   Subdevice #0: subdevice #0 For detail on how to create asound.conf, please see alsa-lib configuration introduction. 4. Encoded audio For encoded (i.e. AC3, DTS) audio, you can use, for example, ac3dec, an utility provided by alsa-tools with the following command line: ac3dec -D hw:1,0 -C test.ac3 This would work for both HDMI audio and SPDIF audio. Double check your hardware and/or schematic in order to know which one to use.

Questions: 1.  Are there any hardware limitations (such as in the Host Controller IP block itself, how this IP block was implemented or in the DMA engine) to how many device endpoints the i.MX53 can handle on Host2 or Host3?  The Reference Manual notes that the OTG controller supports up to 8 endpoints but does not provide information on the Host Controller. 2.  Do any of the device validation tests for verifying the i.MX53 design (or USB cert tests) test compatibility/performance with multiple devices and multiple endpoints? 3.  What are the maximum number of endpoints Freescale has tested with? Problem Background: During extensive testing the customer observes 100% CPU utilization with only 6 endpoints (can be a combination of multi-endpoint devices or single-endpoint devices - see below for test configuration details) using our latest Linux reference BSP (2.6.35 Kernel).  They have tested with the Adeneo WEC7 BSP and the open source Linux kernel based on 3.11 for the QSB and have observed similar performance limitations. This has been tested with multiple packet sizes and device/endpoint configurations and no impact has been shown in varying these parameters. The customer did note that they are only receiving/processing a single interrupt at the 1ms boundary regardless of the number of devices/endpoints.  Processing this interrupt takes approximately 23us for one device and an additional 17us for each additional device endpoint after the first that is processed. The customer hardware configuration for their testing looks something like this: On the customer's board: [i.MX53 Host2/Host3] -> [SMSC 3315 USB High Speed ULPI PHY] -> [SMSC LAN9514 On-board 4-port USB 2.0 HS Hub] External: [SMSC LAN9514 Port #1] -> [SMSC USB2415 4-Port USB 2.0 HS Hub] -> Medical device w/ endpoints #1-4 [SMSC LAN9514 Port #2] -> [SMSC USB2415 4-Port USB 2.0 HS Hub] -> Medical device w/ endpoints #5-8 [SMSC LAN9514 Port #3] ->  Medical device w/ endpoint #9 [SMSC LAN9514 Port #4] ->  Medical device w/ endpoint #10 Answer: Hosts do not have endpoints. Only devices have endpoints. EHCI compliance hosts, like all i.MX devices, use a linked list of queues (for bulk/control transport). Each queue has a queuehead that represents a corresponding endpoint and has the endpoint's capabilities. On the queue are transfer descriptors that have the information of which data is to be moved to/from the endpoint of the device. All of this is in main memory and read/written under DMA.  There is no limit on how many devices/endpoints a host can service, other than the amount of available main memory (DRAM). The CPU has to build the linked lists, but this is  normally not taking much bandwidth. My guess at this time is that there may be a problem in the USB driver, or the application that is using the driver, or a problem with data alignment. For efficient operation, data must be aligned on 32-bit boundaries. Buffers are best aligned on 64-byte boundaries.

Hi all, I shared my test results and solutions in attachments. Best regards, Carl

GStreamer has a simple feature to enable tracing, allowing the developer to do basic debugging. These can be done in two ways: Adding the parameter --gst-debug=LIST to the pipeline (a pipeline is a executed gst-launch command) Prepending the environment variable GST_DEBUG=LIST' LIST is a a comma-separated argument, indicating the GStreamer elements to trace. For example, if one needs to trace the sink element      $ GST_DEBUG=*sink*:5 gst-launch playbin2 uri=file:///sample.avi or      $ gst-launch playbin2 uri=file:///sample.avi --gst-debug=*sink*:5 Both commands produces the same log. In case want to trace for than one element, so can simple add the <element>:5, for example      $ GST_DEBUG=mfw_v4lsink:5,vpudec:5 gst-launch playbin2 uri=file:///sample.avi The number 5 indicates the log category, where 5 is the highest (the most verbose log you can get) and 0 produces no output (5=LOG, 4=DEBUG, 3=INFO, 2=WARN, 1=ERROR). Log can be huge in each pipeline run. One way to filter it is using the grep command. Before grepping, one needs to redirect the standard error to the standard output (GStreamer log goes always to stderr), so      $ GST_DEBUG=mfw_v4lsink:5,vpudec:5 gst-launch playbin2 uri=file:///sample.avi 2>&1 | grep <filter string> In case the log needs to be shared, it is important to remove the 'color' of the log, again, one just needs to add the parameter --gst-debug-no-color or prepend the env variable GST_DEBUG_NO_COLOR=1 ----- More shell variables that GStreamer react, can be found here https://developer.gnome.org/gstreamer/0.10/gst-running.html

After porting u-boot to your i.MX5x board you might want add it on LTIB menu, "Choose your board for u-boot" section. For this, edit ltib/config/platform/imx/main.lkc to add your board: Enter board on menu: comment "Choose your board for u-boot" choice prompt "board" default BOARD_MX51_BBG depends on PLATFORM = "imx51" help This menu will let you choose the board you use. ... + config BOARD_MX53_MYBOARD + bool "mx53_myboard" ... endchoice Add the "mx53_myboard_config" that matches your board configuration on the u-boot Makefile to PKG_U_BOOT_CONFIG_TYPE: config PKG_U_BOOT_CONFIG_TYPE   string   ... + default "mx53_myboard_config" if ( PLATFORM = "imx51" && BOARD_MX53_MYBOARD && !PKG_KERNEL_UPDATER )   ...

Getting Started for i.MX53 Quick Start Board Here is a quick overview you can follow to get your very first contact with i.MX53 QSB. Introduction Out of box i.MX53 QSB video booting up Ubuntu Original Video: Out of box i.MX53 QSB video booting up Ubuntu with some demo (GPU and VPU) Original Video: How to load a pre-built image Here, you should have loaded your board with the out-of-box SD card. Next step is create your own SD card with some pre-built image. You can find pre-built image packages from Freescale for Linux look for Linux Binary Demo file Please, go to Timesys wikipage[1] and see how to load a pre-built image. You can use some Freescale image or some Timesys image. Both will work! For loading linux OS you need at least 3 images: bootloader image kernel image root file system image or tarball Bootloader For iMX53QSB the default bootloader provided by Freescale is u-boot.You can build your own image using LTIB following the same procedure from here. Kernel You can build a new uImage (kernel binary image to be loaded by u-boot) using LTIB, and you can follow the instructions from here Root File System Root file system is a set of directories and files that become the system environment. How to Built Your Own Image Take BSP package on Freescale i.MX53 QSB web site. Prepare your computer to LTIB installation, see that you need All Boards LTIB. Transfer all images to the SD Card (it will be placed under <ltib_dir>/rootfs/boot). Configure your u-boot environment variable. Boot your board. In case you want to boot via NFS, please follow the next procedure instead. Take BSP package on Freescale i.MX 53 QSB web site. Prepare your computer to LTIB installation, see that you need @all_boards_ltib Configure your computer to be able to provide NFS service: Configure your TFTP server. Configure your NFS server. Configure your u-boot environment variable. Boot your board. Be aware the kernel command line you set on u-boot variable can configure the display.

In FSL i.MX53 reference design, it is configured as: static struct mxc_audio_platform_data sgtl5000_data = { .ssi_num = 1, .src_port = 2, .ext_port = 5, .hp_irq = gpio_to_irq(HEADPHONE_DEC_B), .hp_status = headphone_det_status, .init = mxc_sgtl5000_init, .ext_ram_rx = 1, }; by default. If change the configuration to be : static struct mxc_audio_platform_data sgtl5000_data = { .ssi_num = 0, .src_port = 1, .ext_port = 5, .hp_irq = gpio_to_irq(HEADPHONE_DEC_B), .hp_status = headphone_det_status, .init = mxc_sgtl5000_init, .ext_ram_rx = 1, }; There will prompt "imx_ssi_irq mxc_ssi SISR 8003a3 SIER 180100 fifo_errs=XXXX"  constantly, and audio is greatly distorted. The root cause of this issue is that SSI1/3 use SDMA, and also use IPMUX, but there is not the clock dependency between SDMA and IPMUX, so sometimes IPMUX clock is closed automatically. The attached patch may fix this issue. NOTE: If use SSI2 .ssi_num = 1,             .src_port = 2, If use SSI1 .ssi_num = 0,             .src_port = 1,

The solution works when I use mx53_loco bsp. Modify u-boot and kernel, keep the same. Then you may find you can't login into the system regardless of whatever you input after freescale login: It confused me for a long time. If you  also met this problem,try to check the iomux-mx53.h(linux/arch/arm/plat-mxc/include/mach/). #define _MX53_PAD_PATA_DIOW__UART1_TXD_MUX   IOMUX_PAD(the fourth argument 0x878 should be changed to 0x0) I think this is a small bug in header files. Haifeng

This is a workaround—this page needs to be updated to add instructions for multi-touch support. Based on Freescale BSP 11.05. The LVDS panel (MCIMX-LVDS1) has a serial multi-touch controller, eGalax. As a workaround to have it supported on directly on Qt, we can force the driver to behave as a single touch. To do this: 1 - Edit the file ltib/rpm/BUILD/linux-2.6.35.3/drivers/input/touchscreen/egalax_ts.c adding the following line: + #define FORCE_SINGLE_POINTER_SUPPORT 1 2 - Compile the kernel ./ltib -m scbuild -p kernel 3 - Copy the new kernel to Card/Memory and boot it. 4 - Start your Qt app: $ Xfbdev -screen 1024x768 -mouse tslib,,device=/dev/input/event0  & $ export DISPLAY=:0.0 $ ./yourQTapp Note: You can read the touch events with "evtest" $ evtest  /dev/input/event0 or tslib apps: $ export TSLIB_TSDEVICE=/dev/input/event0 $ ts_print

The i.MX53 family of processors represents Freescale's next generation of advanced multimedia and power-efficient implementation of the ARM Cortex™-A8 core with core processing speeds up to 1.2 GHz. It is optimized for both performance and power to meet the demands of high-end, advanced applications. Ideal for a broad range of applications in the consumer, automotive, medical and industrial markets, the i.MX53 includes an integrated display controller, full HD capability, enhanced graphics and connectivity features. i.MX Family Comparison Product Information on Freescale.com i.MX534 Multimedia Applications Processor i.MX535 Multimedia Applications Processor i.MX536 Multimedia Applications Processor i.MX537 Multimedia Applications Processor Evaluation/Development Boards and Systems i.MX53 Quick Start Board Android How to enable WIFI support for iMX53 QSB Android IMX53 QSB android recovery mode Linux I.MX53 QSB Board Get Started How to flash a 4GB SD Card with the image used in training Enabling Dual Display in UBUNTU with the iMX53 QSB @running_dual_display SABRE Platform for Tablets based on i.MX53 Linux i.MX53 ARD Dual LVDS Enabling Dual LVDS panels i.MX53 USB Eth NFS Using an USB/Eth adapter to boot NFS User Applications i.MX53 Qt LVDS display Touch on Qt with LVDS display Embedded Software and Tools Android OS for i.MX Applications Processors i.MX53 Current Software Updates and Releases Partners / 3rd-Party Development Tools Rainbow-G11D:  i.MX53 Development Kit (iWave Embedding Intelligence) STKa53:  Starterkit STKa53 (Technology in Quality) DS-5:  ARM Development Studio 5 (ARM) Additional Resources Board Bring-up and DDR Initialization Tools Building QT5 for i.MX53 Change AUDMUX src_port causes "imx_ssi_irq mxc_ssi SISR 8003a3 SIER 180100 fifo_errs=XXXX" ConnectCore® i.MX53 / Wi-i.MX53 by Digi International Develop a Simple OpenVG Application Under Linux: Tutorial Embedded i.MX5x Application Development Kit for Android -$199 HDMI Audio Setting How to Enable the souphttpsrc Plugin on i.MX53 i.MX53 ARD Dual LVDS Imx53-fastboot-example i.MX53 Memory Calibration Script (AN4466) i.MX53 QSB Android Recovery Mode I.MX53 QSB Board Get Started i.MX53 QSB Board Video IMX53 QSB enable WIFI android i.MX53 QSB Ubuntu Dual Display i.MX53 Quick Start Board IMX53 SABRE AI i.MX53 Start-R Lab Exercise - Prof. Massimo Violante Politecnico of Torino i.MX53 Start-R Lab Exercise - Developing a loadable kernel module to manage GPIOs in i.MX53QSB i.MX53 USB Eth NFS i.MX53 Qt LVDS Display NOVPEK i.MX53 by NovTech Running Dual Display on i.MX53QSB bin2txt.pyw (U-boot splash screen support)

Qt framework Qt is a cross-platform complete development framework with tools designed to streamline the creation of stunning native applications and amazing user interfaces for desktop, embedded and mobile platforms. Qt's cross-platform full framework and tools enables developers to target various desktop, embedded, mobile and real-time operating systems with one code base. Qt brings freedom to the developer saving development time, adding efficiency and ultimately shortening time to market. Building Qt Compile Qt for i.MX28 Building QT5 for i.MX53 Building QT for i.MX6 Qt on iMX6 Installing tools Installing and Configuring QT Creator (Ubuntu) Qt5 with Qt3D over Wayland rootfs Demos Qt5 Cinematic Experience Demo on i.MX6 Video - IMx 53 Qt5 qt3d demo Qt5 with Qt3D over Wayland rootfs Information Qt5 on i.MX6  DO's and DONT's Best Practices for QML

Design Check Lists: HW Design Checking List for i.MX6DQSDL HW Design Checking List for i.Mx53 Hardware Design Checklist for i.MX28 HW_Design_Checking_List_for_i.MX6SoloX i.MX6UL Hardware design checklist   DDR Design Tool: I.MX53 DDR3 Script Aid imx53 DDR stress tester V0.042 i.Mx6DQSDL DDR3 Script Aid MX6DQP DDR3 Script Aid i.Mx6DQSDL LPDDR2 Script Aid i.Mx6SL LPDDR2 Script Aid i.MX6SX DDR3 Script Aid I.MX6UL DDR3 Script Aid i.MX6UL_LPDDR2_Script_Aid i.MX6ULL_DDR3_Script_Aid  i.MX6ULL_LPDDR2_Script_Aid  MX6SLL_LPDDR2_Script_Aid  MX6SLL_LPDDR3_Script_Aid  i.MX6 DDR Stress Test Tool V1.0.3 i.MX6/7 DDR Stress Test Tool V3.00 i.MX8MSCALE DDR Tool Release  i.MX8M DDR3L register programming aid  i.MX 8/8X Family DDR Tools Release   Application Notes: MX_Design_Validation_Guide I.MX6 series USB Certification Guides

In L2.6.35_11.09.01_ER BSP Uboot, the MMC driver was updated, but there is issue that when you modified some uboot code, the MMC driver has chance to fail to work. The root cause is that mmc->has_init hasn't been initialized. Sometimes the value will be not zero, then mmc driver will be skipped for initialization. Attached is the patch to fix this issue in L2.6.35_11.09.01_ER BSP Uboot.

Software Update and Recovery The information reproduced above is from Android User Guide R10.2, found into Android release package. It is possible to format the /data and /cache partitions or update software based on a update script using recovery mode as follows: Prepare for all Android source code that assumed to be saved in ~/myandroid directory. Prepare for ADB over USB. make sure that ADB over USB is ok. USB cable is connected. Refer to i.MX51 Android ADB over USB section for more information. Connect the UART to the PC and open a terminal to check for printed messages Enter the recovery by manual for imx51_BBG board:       setenv bootargs_android_recovery 'setenv bootargs ${bootargs} init=/init root=/dev/mmcblk0p4 rootfs=ext4 di1_primary'       setenv bootcmd_android_recovery 'run bootargs_base bootargs_android_recovery;mmc read 0 ${loadaddr} 0x800 0x2000;bootm'       run bootcmd_android_recovery For imx53_SMD board:       setenv bootargs_android_recovery 'setenv bootargs ${bootargs} init=/init root=/dev/mmcblk0p4 rootfs=ext4'       setenv bootcmd_android_recovery 'run bootargs_base bootargs_android_recovery;mmc read 0 ${loadaddr} 0x800 0x2000;bootm'       run bootcmd_android_recovery When system has completed bootup,  You will see this screen: You can press "MENU" "HOME" or "F1" (by USB keyboard, for developer)" going to the text menu like this: Select the required option using the direction keys on the keypad or keyboard. Apply sdcard:update.zip, you may update the software from update.zip as shown in the following example: Copy this directory from android source code myandroid/bootable/recovery/etc to a tempepory directory, such as ~/recovery. cd ~/recovery and remove init.rc from this directory. Edit ./META-INF/com/google/android/updater-script according to the required commands. for example, in order to format /system partition and use update.zip to update system partition, copy whole the entire content directory to system partition, all commands are found in ~/myandroid/bootable/recovery/update/install.c You must notice, when your signing the zip package, it will lose ALL of the permission information, you need to set the right permission in the script. You can find the example in ./META-INF/com/google/android/updater-script Copy update-binary, Copy out/target/product/YOU_PRODUCT/system/bin/updater to ~/recovery/META-INF/com/google/android/update-binary Create a directory called system and copy some files you would like to update to ./system. Create a directory called res to save the public key of your system.         fsl@fsl-desktop:~/recovery$ mkdir res         fsl@fsl-desktop:~/recovery$ ~/myandroid/out/host/linux-x86/framework/dumpkey.jar ~/myandroid/build/target/product/security/testkey.x509.pem > res/keys Create a package called recovery.zip using the zip command         fsl@fsl-desktop:~/recovery$zip recovery.zip -r ./META-INF ./system ./res recovery.zip is located in the current directory. Then create a digital signature for recovery.zip package as follows.         fsl@fsl-desktop:~/recovery$ cd ~/myandroid         fsl@fsl-desktop:~/myandroid$ make signapk         fsl@fsl-desktop:~/myandroid$ cd ~/recovery         fsl@fsl-desktop:~/recovery$ java -jar ~/myandroid/out/host/linux-x86/framework/signapk.jar -w ~/myandroid/build/target/product/security/testkey.x509.pem ~/myandroid/build/target/product/security/testkey.pk8 recovery.zip recovery_signed.zip recovery_signed.zip is located in the current directory. Copy it to the SD card using ADB         fsl@fsl-desktop:~/recovery$ adb push recovery_signed.zip /sdcard/update.zip update.zip is completed and the system is updated based on the commands in the update-script. Check for error messages on the LCD. Wipe data/factory reset. /data and /cache partitions are formatted. Wipe cache partition. /cache partition is formatted. Reboot the system.

The refine to TV mode of R10.3.1 causes dual video function fail. The attached patch recovers dual video function. Attached dual_video.patch only work for RGB output (HDMI support). For legacy TVout (YUV output), the extra patch is necessary, see the attached "legacy_tvout.zip". Refer to Dual video with single UI on i.MX53 SMD with Android R10.4  for setup.

DirectFB DirectFB is a thin library that provides hardware graphics acceleration, input device handling and abstraction, integrated windowing system with support for translucent windows and multiple display layers, not only on top of the Linux Framebuffer Device. It is a complete hardware abstraction layer with software fallbacks for every graphics operation that is not supported by the underlying hardware. DirectFB adds graphical power to embedded systems and sets a new standard for graphics under Linux. [Source: directfb.org] DirectFB Quick Test Select DirectFB in Package List on LTIB1011: [x] DirectFB Select also DirectFB examples: [x] DirectFB examples Build your Linux. Flash your SD card. Launch your Linux image on your board, and then launch a DirectFB example: $ df_dok DirectFB benchmark is launched. Benchmark result on an i.MX 53 EVK:

Question: How do I add the opencore amrnb plugin to be the default for amrnb for use with playbin2? With a .3gp file to play and audio amrnb encoded, amr plugins do not work ( i.e. are not even part of the build and when configured to build, they do not even build ). Opencore had been added and got it to build and install with our ltib BSP and it plays the audio from the .3gp file in question fine ( but with an explicit pipeline ). But, the opencore amrnb plugin is not selected by gstreamer playbin2 when it does a typefind on the amrnb audio type. Answer: There are three options: 1. Fix the aiurdemux to allow correct demuxing 2. Lower the aiurdemux rank 3. Remove the /usr/lib/gstreamer-0.10/libmfw_gst_aiur_demux.so Obviously, 3 is a ugly hack but it can be just enough for customer. If option 1 or is selected, patches may be required from MM team. On this system, the aiurdemux does not have any issue, and audio playback works as expected. These are the VPU firmware and GST-FSL versions on YOCTO: VPU Version: firmware 1.4.50; libvpu: 5.3.2 MFW_GST_VPU_DECODER_PLUGIN 3.0.8 build on Sep 30 2013 16:36:27. where in LTIB: VPU Version: firmware 1.4.48; libvpu: 5.3.2 MFW_GST_VPU_DECODER_PLUGIN 2.0.3 build on Jul 23 2013 11:20:21. So the next moved would be to try upgrading versions on LTIB if they want to use this system; in case switching to Yocto is viable, then the upgrade is already done.

Q: MX53 u-boot doc to enable the splash screen and went through Re: MX53 u-boot Splash Screen support but I can't seem to get the splash working on the VGA output.  A: FSL do not have solution / recommendations for VGA splash screen under U-boot. Only LVDS is supported. Typically, the Uboot bootloader does not interact with any display interface and does not have a splash screen displaying capability. To add this feature to Uboot on i.MX5 platform, the IPU driver should be included into the Uboot code. Looks like we do not have ready to use solution for the LCD. As an example for LCD configuring it makes sense to use LCD settings from Linux driver. Another approach - to use Linux (Penguin) logo (assuming Linux is booted quickly after U-boot) - at least, Linux supports more display drivers and its logo using is specified. follow up question is since the Tux the penguin logo is only 80x80 is it possible to make a larger image for the Linux start up logo? yes, you should configure kernel for the new image on make menuconfig That doesn’t help this H/W guy, but I think this may - https://community.freescale.com/thread/304300    look for  “#To change the splash screen of linux kernel (small penguine on top left corner)..“

The ARD has 2 LVDS connectors, one on the CPU board and a second one on the main board, the LVDS panel (MCIMX-LVDS1) can be connected to these. To enable two independent displays on the Linux BSP 11.05: 1. On u-boot, use the following on the kernel command line for video: video=mxcdi0fb:RGB666,XGA di0_primary ldb=di0 video=mxcdi1fb:RGB666,XGA ldb=di1 2. After boot use  memtool to write to the LDB registers to map each LVDS to a display interface: root@freescale ~$ /unit_tests/memtool -32 0x53fa8008=0x0000020d Writing 32-bit value 0x20D to address 0x53FA8008 3. Unblank framebuffer 1: echo 0 > /sys/class/graphics/fb1/blank On the Freescale Linux BSP 11.09 the LDB register write is not needed: 1. On U-boot, use the following on the kernel command line for video: 'video=mxcdi0fb:RGB666,XGA di0_primary ldb=separate,di=0,di=1,ch0_map=SPWG,ch1_map=SPWG video=mxcdi1fb:RGB666,XGA' 2. Unblank framebuffer 1: echo 0 > /sys/class/graphics/fb1/blank