[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-342420 

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-342654 

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-341996 

i.MX6UL/ULL extend uart port and integrate SIP I2C device. Contents 1 硬件设计说明 ............................................................. 2 硬件框图 ........................................................................ 2 硬件模块设计 ................................................................. 4 IOMUX 表 ....................................................................... 8 2 编译环境搭建 ............................................................. 8 编译环境文档及镜像下载。 ............................................ 8 编译环境搭建 ............................................................... 11 3 移植BSP 到扩展串口板 ........................................... 15 Uboot 中支持新的DTB ................................................ 15 Uboot 中调试串口改成UART6 ..................................... 16 去除掉无用的驱动及其IOMUX .................................... 18 增加i.MX6UL/ULL 本身串口支持 ................................. 18 增加GPIO 输出支持（GPIO_LED） ............................ 26 增加GPIO 输入支持（GPIO_KEY） ........................... 30 增加PWM支持 ............................................................ 34 增加i.MX6UL 本身ADC 支持 ....................................... 38 修改网口驱动仅支持一个网口 ...................................... 41 增加NXP PCF8591 I2C 转ADC 芯片支持 ................... 44 增加NXP PCA9555A I2C 转GPIO 芯片支持(rework 支持) 47 增加NXP PCT2075 I2C 温度传感器芯片支持(rework 支持) 55 增加NXP PCF8563 I2C RTC 支持(rework 支持) ......... 58 增加NXP PCA9632 I2C LED控制器芯片支持(rework 支持) 65 增加CH438 EIM 转串口芯片支持(delay) ..................... 70

Follow the PyeIQ Introduction Guide on eIQ Community: PyeIQ v1.0 for BSP 5.4.3_2.0.0 Release  Follow an introduction video for PyeIQ:

本文旨在说明基于i.MX8X如何设计硬件平 台，包括相关设计资源的收集与学习，硬件原 理图设计，layout，启动(bring up)，量产准备， 及正式量产后的失效分析与失效控制。主要是 帮助厘清硬件开发相关从头到尾的问题。 请注意本文为培训和辅助文档，部分内容源 自PMIC/i.MX8X硬件开发指南，并作中文翻 译，强调重点，和查缺补漏，本文不是官方文 档的替代，请一切以官方文档为准。 目录： i.MX8X硬件参考平台 ................................................. 3 2 i.MX8X硬件设计资源 ................................................. 5 i.MX8X芯片相关设计资源 ............................................... 5 i.MX8QXP MEK板外设相关设计资源 ........................... 10 i.MX8QXP 硬件接口规范 .............................................. 11 3 i.MX8X原理图设计检查点 ........................................ 13 PMIC+i.MX8X供电能力和上电时序 .............................. 13 PMIC电源输出端设计 ................................................... 17 I.MX8X电源输入端及去耦设计 ..................................... 22 LPDDR4内存设计 ........................................................ 23 DDR3L内存设计 ........................................................... 25 I2C总线设计 ................................................................. 26 Reset，Wdog reset和On/Off设计建议 ......................... 27 PCIe设计 ...................................................................... 29 USB设计 ...................................................................... 30 晶体时钟设计 ............................................................... 32 JTAG信号端接设计 ...................................................... 34 未使用接口管脚的端接处理 .......................................... 35 GPIO管脚的设计策略 ................................................... 37 调试接口建议 ............................................................... 37 4 i.MX8X 布线设计检查点 ........................................... 40 PMIC电源输出端布线建议 ............................................ 40 i.MX8X端去耦电容摆放 ................................................ 41 电源布线建议 ............................................................... 41 PCB叠层建议 ............................................................... 43 内存布线通用建议 ........................................................ 43 LPDDR4内存布线建议 ................................................. 44 DDR3L内存布线建议.................................................... 45 内存信号完整性仿真建议 ............................................. 47 内存JEDEC信号兼容性测试 ......................................... 48 高速电路板布线建议..................................................... 49 时钟建议 ...................................................................... 50 信号线阻抗建议 ............................................................ 53 USB布线建议 ............................................................... 54 5 i.MX8X硬件散热设计 ............................................... 54 6 i.MX8X硬件启动bring up .......................................... 56 Bring up需要参考的文档与使用工具............................. 56 i.MX8X Bring up需要准备的文档与使用工具 ............................. 60 Bring up检查列表 .......................................................... 65 7 试产与量产前检查点 ................................................. 67 内存稳定性 ................................................................... 67 ESD与EMI考虑 ............................................................. 68 产线设计 ....................................................................... 69 8 i.MX8X失效分析流程 ................................................ 70 NXP失效分析服务 ........................................................ 70 NXP FA失效分析流程 ................................................... 70 筛查是否是芯片原生问题 .............................................. 72 9 量产厂线的EOS/ESD控制 ........................................ 73 什么是EOS/ESD ........................................................... 73 设计中的EOS/ESD风险检查点 ..................................... 75 生产产线中的EOS/ESD风险与防护 .............................. 78

The document to descript change the u-boot environment variables under the Linux rootfs.  Also provide a demo on i.MX6ull evk of sdcard mirror.  Linux fw_printenv fw_setenv to access U-Boot's environment variables.pdf  --- the document fw_printenv_fw_setenv_demo_iMX6ullevk_L4.14.98_2.0.0_ga.sdcard  --- demo sdcard mirror

In recent months, some i.MX6ULL users try to add google chromium to Linux BSP L4.1.15 managed by yocto project 2.1 (krogoth), but failed.  One of A customers project also encoutered the same issues, their engineers submitted case to us asking for help. Then a compilation test for the customer was done,  there really exist some errors during compilation. The follwing contents show how to compile it and handle issues. ---System Configurations Hardware: notebook, i7 4-cores, 16GB DDR4 Software: windows 7/10, VMware Player 14.0, USB3.1 SSD Step1: # cd ~/fsl-release-bsp # DISTRO=fsl-imx-x11 MACHINE=imx6ull14x14evk source fsl-setup-release.sh -b build-x11 # gedit ./conf/local.conf          Add lines below, just like descriptions of chromium in i.MX_Yocto_User’s_Guide.pdf …… CORE_IMAGE_EXTRA_INSTALL += "chromium libexif" LICENSE_FLAGS_WHITELIST="commercial" …… [Comment] Above methord has been described in i.MX_Yocto_User's_Guide.pdf. # bitbake chromium -c fetch           Begin to download chromium package：                    If you feel it’s the speed of download is too slow, you can copy the following link to explorer, and download the file directly: http://gsdview.appspot.com/chromium-browser-official/chromium-48.0.2548.0.tar.xz Then copy the file to ~/fsl-release-bsp/downloads. And create a.done file by touch command in the directory. # cd ~/fsl-release-bsp/downloads # touch chromium-48.0.2548.0.tar.xz.done          Empty file is OK, not need any contents in the file. Step 2          Begin to compile chromium: # cd ~/fsl-release-bsp/downloads/build-x11 # bitbake chromium -c compile          From the following picture, total tasks are 1636 Errors 1 during compilation Error : ERROR: cups-2.1.3-r0 do_fetch: Fetcher failure: Fetch command failed with exit code 4, output: failed: Connection timed out. Read error (Connection timed out) in headers.   ERROR: cups-2.1.3-r0 do_fetch: Function failed: Fetcher failure for URL: 'https://www.cups.org/software/2.1.3/cups-2.1.3-source.tar.bz2'. Unable to fetch URL from any source. ERROR: Logfile of failure stored in: /home/weidong/fsl-release-bsp-415-200/build-x11/tmp/work/cortexa7hf-neon-poky-linux-gnueabi/cups/2.1.3-r0/temp/log.do_fetch.33362 ERROR: Task 111 (/home/weidong/fsl-release-bsp-415-200/sources/poky/meta/recipes-extended/cups/cups_2.1.3.bb, do_fetch) failed with exit code '1' Handle it: Download the file through explorer: https://www.cups.org/software/2.1.3/cups-2.1.3-source.tar.bz2 Then copy it to ~/fsl-release-bsp/downloads, and create cups-2.1.3-source.tar.bz2.done Continue: # bitbake chromium -c compile Errors 2 during compilation Handle it : copy the fsimx6ul-chromium.patch to your main yocto directory (same directory were you can find yocto-download). Switch to this directory and apply the patch with the following command: patch -p1 < fsimx6ul-chromium.patch Compile your yocto rootfs again [Comment] The solution is from the link: https://forum.fs-net.de/index.php?thread/4352-yocto-build-chromium-browser/ fsimx6ul-chromium.patchis provided by F&S Support Team Continue: # bitbake chromium -c compile Successfully. Step 3 Compiling full image # bitbake fsl-image-gui          When chromium compilation is done, we can begin to comipile rootfs(fsl-image-gui)          Then no errors occurred. Compiled BSP successfully.   Then we check if chromium has been included in rootfs. # cd ~/fsl-release-bsp/build-x11/tmp/deploy/images/imx6ull14x14evk [Comment] (1) fsl-image-gui-imx6ull14x14evk-20200425220751.rootfs.tar.bz2          The file is rootfs without u-boot/device tree/linux kernel. (2) fsl-image-gui-imx6ull14x14evk-20200425220751.rootfs.sdcard          The file is full image including u-boot/device tree/kernel/rootfs Here is the links among files:          Now we check if rootfs have included chromium, create a temp directory in ~/ and copy rootffs to the temp directory # mkdir ~/temp # cp ./fsl-image-gui-imx6ull14x14evk-20200425220751.rootfs.tar.bz2 ~/temp          Then decompress it. # cd ~/temp # tar -jxvf fsl-image-gui-imx6ull14x14evk-20200425220751.rootfs.tar.bz2 # cd usr/bin/chromium/ # ls Successfully. NXP TIC team Weidog Sun 2020/05/01

In order to improve the speed of compilation, VMWare Player 14.0 is installed on local hard disk, and Ubuntu 18.04 LTS is installed on a SSD with at least 500GB size and USB3.1 specification. When installing ubuntu 18.04 LTS to SSD, it should be allocated at least 350GB of disk space, because compiling this version of android requires a larger disk space. The following are detailed compilation steps: Part l Configuring Ubuntu 18.04 LTS 1. Installing Ubuntu 18.04 on VMplayer 14.0 After installation is done, root user should be set at first. # sudo passwd root Then follow these steps to configuration ubuntu 18.04 for environment of compiliation --Changing sources of ubuntu 18.04 mirror If you are Chinese users, you can do the step, which can improve your system performance. # sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak # sudo geit /etc/apt/source.list Comment I.MX customers outside China do not need to modify Ubuntu source list, or can modify it to local mirror site of Ubuntu 18.04, which can improve the speed of software upgrade.    Delet all sources and copy following lines here, Then save it and exit Changing ubuntu source deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse    Then running these 2 commands to update sources and packages    # sudo apt-get update    # sudo apt-get upgrade 2. Installing packages for compiliation Packages for compiliation # sudo apt-get install flex bison gperf build-essential zlib1g-dev lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z1-dev libgl1-mesa-dev tofrodos python-markdown libxml2-utils xsltproc # sudo apt-get install uuid-dev:i386 liblzo2-dev:i386 gcc-multilib g++-multilib subversion openssh-server openssh-client uuid uuid-dev zlib1g-dev liblz-dev lzop liblzo2-2 liblzo2-dev git-core curl # sudo apt-get install u-boot-tools mtd-utils android-tools-fsutils openjdk-8-jdk device-tree-compiler aptitude libcurl4-openssl-dev nss-updatedb # sudo apt-get install chrpath texinfo gawk cpio diffstat gdisk m4 libz-dev libssl-dev Part 2 Compiling Android Q10.0.0_2.1.0 BSP 1. Downloading NXP source code for Android Q10.0.0_2.1.0    File name is imx-android-10.0.0_2.1.0.tar.gz.    Copy the file to ~/, and decompress it.    # cd ~/    # tar zxvf ./imx-android-10.0.0_2.1.0.tar.gz    Then “imx-android-10.0.0_2.1.0” directory is created at ~/, now run the command to download android source code. # source ./imx-android-10.0.0_2.1.0/imx_android_setup.sh Comment imx_android_setup.sh is a script file, which includes all steps needed by the environment of android Q10.0.0_2.1.0 BSP. If network environment is enough good, several hours later, it will be done. 2. Compiling Android Q10.0.0_2.1.0 Referring to steps in Android_User's_Guide.pdf, We summaries steps for compilation here: (1) Preparing cross-compile tool chain    In Android_User's_Guide.pdf, 2 kinds of tool chain are recommended for users. --- gcc-arm-8.3-2019.03-x86_64-aarch64-elf.tar.xz --- gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu.tar.xz    Users can select one of them, and then decompress it to /opt/ directory. On how to download them or more details, see Android_User's_Guide.pdf, page 3. Here we will use gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu.tar.xz as tool chain. (2) Beginning to Compile Android Q10.0.0_2.1.0 BSP    Since this version of Android BSP requires high memory capacity when compiling, if the memory configuration of the virtual machine is incorrect, it is very likely to cause the compilation to fail. The following is a list of variable tests for user reference: # cd android_build # export AARCH64_GCC_CROSS_COMPILE=/opt/gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu/bin/aarch64-linux-gnu- # source build/envsetup.sh # lunch evk_8mp-userdebug # ./imx-make.sh -j2 2>&1 | tee build-log.txt Part 3 Errors During Compilation 1. Allocating 8GB Memory For VMware Player # ./imx-make.sh -j1 2>&1 | tee build-log.txt 2. Allocating 12GB Memory For VMware Player # ./imx-make.sh -j4 2>&1 | tee build-log.txt # ./imx-make.sh -j4 2>&1 | tee build-log.txt (Run it again) # ./imx-make.sh -j4 2>&1 | tee build-log.txt (Run it again)       So if we use 4 thread to compile BSP, command for compilation will have to be run for 3 times. NXP TIC Team Weidong Sun 2020/4/30

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-342877 

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-342729 

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-342833 

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-342719 

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-343007 

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-343017 

[中文翻译版] 见附件   原文链接： https://community.nxp.com/docs/DOC-342837 

Pre-Sales: i.MX8/8X applications in automotive(Chinese Version) https://community.nxp.com/docs/DOC-345825 i.MX8X website design resource guide: (Chinese Version) https://community.nxp.com/docs/DOC-345676 After-Sales: i.MX8X memory configuration&test application notes: (Chinese Version) https://community.nxp.com/docs/DOC-345803 i.MX8X hardware design guide: (Chinese Version) https://community.nxp.com/docs/DOC-346582 i.MX8X_4.19.35_bootloader customization application notes: (Chinese Version) https://community.nxp.com/docs/DOC-345713 i.MX8X_4.19.35_kernal customization application notes: (Chinese Version) https://community.nxp.com/docs/DOC-345714 i.MX8X_4.14.98_bootloader customization application notes: (Chinese Version) https://community.nxp.com/docs/DOC-342448 i.MX8X_4.14.98_kernal customization application notes: (Chinese Version) https://community.nxp.com/docs/DOC-344217 i.MX8X_5.4.24_bootloader customization application notes: (Chinese Version) https://community.nxp.com/docs/DOC-347131

L5.4.3_1.0.0 release is now available on IMX_SW landing page: BSP Updates and Releases -> Linux ->Linux L5.4.3_1.0.0. Documentation -> Linux -> Linux 5.4.3_1.0.0 Documentation Files available: # Name Description 1 imx-yocto-LF_L5.4.3_1.0.0.zip i.MX L5.4.3_1.0.0 for Linux BSP Documentation. Includes Release Notes, User Guide. 2 LF_v5.4.y-1.0.0_images_MX6QPDLSOLOX.zip i.MX 6QuadPlus, i.MX 6Quad, i.MX 6DualLite, i.MX 6Solox Linux Binary Demo Files 3 LF_v5.4.y-1.0.0_images_MX6SLLEVK.zip i.MX 6SLL EVK Linux Binary Demo Files 4 LF_v5.4.y-1.0.0_images_MX6UL7D.zip i.MX 6UltraLite EVK, 7Dual SABRESD, 6ULL EVK Linux Binary Demo Files 5 LF_v5.4.y-1.0.0_images_MX7ULPEVK.zip i.MX 7ULP EVK Linux Binary Demo Files  6 LF_v5.4.y-1.0.0_images_MX8MMEVK.zip i.MX 8M Mini EVK Linux Binary Demo Files  7 LF_v5.4.y-1.0.0_images_MX8MNEVK.zip i.MX 8M Nano EVK Linux Binary Demo Files  8 LF_v5.4.y-1.0.0_images_MX8MQEVK.zip i.MX 8M Quad EVK Linux Binary Demo files 9 LF_v5.4.y-1.0.0_images_MX8QMMEK.zip i.MX 8QMax MEK Linux Binary Demo files 10 LF_v5.4.y-1.0.0_images_MX8QXPMEK.zip i.MX 8QXPlus MEK Linux Binary Demo files 11 imx-scfw-porting-kit-1.2.10.1.tar.gz System Controller Firmware (SCFW) porting kit v1.2.10.1 for L5.4.3_1.0.0   Target board: MX 8 Series MX 8QuadXPlus MEK Board MX 8QuadMax MEK Board MX 8M Quad EVK Board MX 8M Mini EVK Board MX 8M Nano EVK Board MX 7 Series MX 7Dual SABRE-SD Board MX 7ULP EVK Board MX 6 Series MX 6QuadPlus SABRE-SD and SABRE-AI Boards MX 6Quad SABRE-SD and SABRE-AI Boards MX 6DualLite SDP SABRE-SD and SABRE-AI Boards MX 6SoloX SABRE-SD MX 6UltraLite EVK Board MX 6ULL EVK Board MX 6ULZ EVK Board MX 6SLL EVK Board   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-zeus ChangeLog: https://source.codeaurora.org/external/imx/imx-manifest/tree/ChangeLog?h=imx-linux-zeus