BSP Layers and Reference Images for Yocto Project Issue Tracker

Description: Update RT Linux Kernel to v6.1

Description: There is a performance and boot time regression on initial BSP 6 releases compared to BSP 5, e.g. boot time on Apalis iMX6 increased from ~18seconds to ~30seconds, the reason is that some unwanted debug kernel configuration was enabled.

Workaround: Set `CONFIG_DEBUG_WW_MUTEX_SLOWPATH=n` or `CONFIG_PROVE_LOCKING=n` in the Linux kernel configuration

Description: USB RNDIS supports is getting deprecated [1], move USB Ethernet-over-USB functionality to USB NCM, updating libusbgx configuration. Starting with Windows 10 this USB protocol is also available in Windows and it has been available in Linux for a long time. [1] https://lore.kernel.org/all/20221123124620.1387499-1-gregkh@linuxfoundation.org/

Description: The instruction set used to compile userspace components is currently forced to be Thumb2 even for recipes which explicitly ask to be compiled for the ARM instruction set (the default for the armv7a machines was and stays Thumb2).

Workaround: No known issues because of this error

Description: Low end modules with little memory (<= 512MB) may crash because of OOM killer

Workaround: Tune the image composition and kernel configuration to lower memory usage

Description: USB over current polarity is currently not defined in the device tree file, leading to the following error: `imx_usb 2184000.usb: No over current polarity defined`

Workaround: This error message can be safely ignored

Description: Default local.conf select upstream distro for i.MX6/6ULL/7 based SoM, downstream is no longer supported for these modules.

Description: The U-Boot mmc info command may truncate the eMMC name by one character at the end.

Workaround: Use BSP6 or backport patch from upstream U-Boot where this got already fixed. https://source.denx.de/u-boot/u-boot/-/commit/84191f73847c351019bb50728d28220d91b0aee4

Description: When using a large kernel, more than 32MB, and using a ramdisk (e.g. initrd) image, the ramdisk image would get overwritten by the uncompressed kernel.

Description: Remove `toradex-fitimage.bbclass`, use standard OE kernel-fitimage.bbclass instead

Description: Spidev is no longer enabled on base dts file, add a device tree overlay to enable the functionality.

Description: Use MP3 audio codec for all the example test videos.

Description: Remove the code trying to set `read_ahead_kb` emmc queue parameter.

Description: Remove `libsoc` deprecated package from tdxref image.

Description: Accessing GPIO over sysfs is deprecated, remove the related gpio-export.service. libgpiod should be used instead.

Description: U-Boot environment config moved from U-Boot to libubootenv recipe.

Description: Update system critical shutdown threshold to match the SoC maximum junction temperature.

Description: Add WAKE#_MICO signal as default wake-up source for every module and carrier board.

Description: Add video playback capabilities to our i.MX 6 based boards using the upstream distribution.

Description: Support loading BSP image with overlapping kerneladdr/loadaddr as configured on BSP6 boot loader. (On our tdx reference images this is an issue only for i.MX 8* based SOMs).

Description: Update Linux Kernel patch version to 5.4.193

Description: Add U-Boot version to the device tree, `/chosen/u-boot,version` property.

Description: MDIO read timeout is randomly popping up during link-up and causing ethernet to stop working

Workaround: Setting the interface down and up again fixes the problem

Description: The analog audio output can present random noise after a soft reboot. The noise goes away as soon as the codec is reinitialized. The noise will only be present if before the reboot the audio interface was used.

Description: Update Kernel to NXP released L5.4.70_2.3.7

Description: Update Linux kernel to 5.4.161

Description: Add FIO, Flexible I/O tester (https://github.com/axboe/fio)

Description: SD card is not detected in U-Boot if the Pull-up resistor is removed from the carrier Board

Description: Update to latest kernel.org patch release and pull in latest patches from linux-imx 5.4.70_2.3.3 patch release.

Description: CMA memory allocation is a fixed value and takes up too much space on certain SKUs. Drop the configuration of the CMA in the device tree in favour of specifying it in the kernel config with a size of 256MB or 12% of total memory which ever is less.

Description: A kernel configured with THUMB2_KERNEL compiled with GCC 10 doesn't boot.

Workaround: Compile without THUMB2

Description: Show EULA license on tdx-reference images that has to be accepted when installed with the Toradex Easy Installer. Note that our tdx-reference images can no longer be installed unattended using the Toradex Easy Installer.

Workaround: Remove the "license" line in the image.json file.

Description: After soft rebooting a system, it is not suspending successfully if it's requested. Instead, a system turns the power down.

Workaround: Always power off a system before booting it.

Description: Due to the class "classes/image_type_tezi.bbclass" in "meta-toradex-bsp-common" setting the label to all upper-case "BOOT", and WIC images using all lower-case "boot", the /boot mounting may actually not work at all (given that an image got actually installed to eMMC using the Toradex Easy Installer prior to distrobooting from SD card and/or USB memory stick). However, rather than having the eMMC's boot partition mounted to /boot it would make much more sense to mount the resp. boot media's boot partition there.

Description: Update Linux kernel to new NXP L5.4.70-2.3.0 release.

Description: WIC images do not contain the device tree overlays. This affects users that boot from the SD card or USB sticks. See Boot From an SD Card / USB Stick / SATA drive for reference.

Workaround: Manually deploy them. See how-to on Deploying a Device Tree Overlay.

Description: WIC images fail mounting /boot. Looks like classes/image_type_tezi.bbclass in meta-toradex-bsp-common is setting the label to all upper-case BOOT while WIC images are using all lower-case boot. This is particularly bad on Verdin iMX8M Plus as due to no Toradex Easy Installer being available as of yet we are using WIC images with the bmap tool for production flashing.

Description: Make sure to document on our developer website which display interfaces are used by default.

Description: Make sure the boot partition on eMMC-based modules is mounted consistently across all modules to /boot.

Description: Support Iris 2.0 SD card (without external pull-ups).

Description: Update developer website article about ADC.

Description: Remove duplicate mmc boot target and adjust boot order to: 1) SD, 2) eMMC, 3) USB and 4) DHCP boot.

Description: Add support for DHCP/TFTP boot via distroboot.

Description: Enable Linux kernel support for the CAN SAE J1939 protocol for the vehicle bus recommended practice used for communication and diagnostics among vehicle components.

Workaround: You may manually enable CONFIG_CAN_J1939, re-build and re-deploy the Linux kernel and/or Linux kernel modules.

Description: Enable systemd-analyze.

Description: The Linux kernel configurations CONFIG_PPS_CLIENT_GPIO and CONFIG_PPS_CLIENT_LDISC may be usefull.

Description: Update graphics to the latest version from NXP.

Description: Create a new unified manifest repository called toradex-manifest for Embedded Linux BSP and TorizonCore.

Description: Synchronize our local.conf sample (in meta-toradex-distro) with the one provided by OE as OE has made some changes.

Description: Change udev rule symlink naming to uart instead of tty.

Description: Add U-Boot boot count support.

Description: Add usbhubc to all our images and document its use.

Workaround: An OpenEmbedded recipe already exists which allows adding uhubctl to any custom image.
http://layers.openembedded.org/layerindex/recipe/85122/

Description: Provide 5.4 based Backports for the i.MX 4.14-2.3.x Kernel to improve WiFi driver stability

Workaround: Compile a new 5.4 kernel

Description: This issue occurs for transferring 2 to 31 bytes count.

Workaround: Apply fix https://github.com/torvalds/linux/commit/2801b2f5fad3d1e9ea0ac8484584051071065645#diff-4cb745fc6dcd5915b18eb9baa5beee00.

Description: meta-toradex-demos currently provides /etc/profile. Rework that to take /etc/profile from OE core and put our extension as scripts into /etc/profile.d.

Description: Timeouts and reads from false channels may be observed when using STMPE811 ADC.

Description: NXP released BSP L4.14.98_2.0.0_ga. Update the kernel to that release.

Description: Update to the OpenEmbedded Thud resp. Yocto Project 2.6 release. - Drop support for the Apalis T30 and Colibri T20/T30/VF.
- Drop support for the legacy update procedure. - Drop Qt4 from the default install - Change the distro from Angstrom to Poky based but keep systemd as the default init manager.

Description: Dropped support for the Lightweight X11 Desktop Environment (LXDE) in favour of single application use-case.

Workaround: Use the latest stable BSP 2.8.

Description: Update OpenSSL to version 1.1.1d

Description: The 2.8 stable release contains all changes up to 2.8b6.

Description: Resuming after suspend may not work.

Description: iptables -L is not supported by our default Linux kernel configuration.

Workaround: A custom Linux Kernel compilation with correct configuration can solve the issue. The correct Linux kernel configuration is e.g. described here:
https://wiki.gentoo.org/wiki/Iptables

Description: The touchscreen with 7" Capacitive Touch Display may not work well when used either on an Evaluation Board with the Capacitive Touch Adapter or on Aster or Ixora.

Description: NXP released BSP 4.9.123_2.3.0_ga. Patches for the user space components are on the meta-freescale mailing list.

Description: Update Wi-Fi Backports to 4.18

Description: Currently, the device tree specifies 2.5V as SGTL5000 VDDA. This is wrong, in practice, the board uses 3.3V Audio voltage as VDDA.

Description: Enforcing to build 32-bit binaries for native and portions thereof using -m32 in EXTRA_OEMAKE_class-native may lead to the following error when building e.g. u-boot-toradex:
cbootimage: Accessing a corrupted shared library

Workaround: The -m32 as specified in EXTRA_OEMAKE_class-native in recipes-bsp/cbootimage/cbootimage.bb of meta-toradex-tegra may be overridden to your liking. The same applies to the following as well:
meta-toradex-demos: recipes-devtools/mtd/mtd-utils_%.bbappend
meta-toradex-nxp: recipes-devtools/imx-loader/imx-loader_git.bb
meta-toradex-tegra: recipes-bsp/tegrarcm/tegrarcm.bb
meta-toradex-tegra: recipes-support/libcryptopp/libcryptopp_5.6.4.bb

Description: U-Boot typically tears down the display controller before handing control over to Linux. On LCD displays disabling pixel clock leads to a fading out effect with vertical/horizontal lines. Make sure to disable back light before booting Linux.

Description: In OE we build the device trees listed in conf/machine/xxx.conf (build-time variable KERNEL_DEVICETREE) and put them into the image. In the update.sh script we currently also have a variable KERNEL_DEVICETREE with a list of what to put on the update media. We could patch update.sh in OE during image creation time, so that update.sh contains the list from conf/machine/xxx.conf rather than having to maintain that list in both places.

Description: Building 2.8b2 and earlier fails on Ubuntu 18.04 LTS.

Workaround: It works on Ubuntu 16.04 LTS.

Description: libsoc is a C library to interface with common peripherals found in System on Chips (SoC) through generic Linux Kernel interfaces. As libsoc supports more and more of our modules we add libsoc support to our regular images.

Description: Currently the Toradex configuration block parser suffers an off by one issue potentially leading to spurious printout during boot e.g.
Model: Toradex V1.2A,
instead of
Model: Toradex UNKNOWN MODULE V1.2A.

Workaround: Fix available on 2016.11-toradex-next branch of git.toradex.com/u-boot-toradex.git.

Description: To get atmel mxt based touchscreens with GPIO connected reset line to work GPIO needs to be configured as an output with appropriate level separately.

Description: In order to allow our customers easy re-flashing of the touch controller configuration, we need to add the mxt-app as well as the proper configuration files to our images.

Workaround: https://www.toradex.com/community/questions/25020/view.html

Description: Integrate solutions proposed by Nvidia (L4T R21.7) and NXP to mitigate Meltdown and Spectre security vulnerabilities.

Description: The scrot recipe source is 404.

Description: When building 2.8b1 building stress fails with "ERROR: stress-1.0.4-r0 do_fetch: Fetcher failure for URL: 'http://people.seas.harvard.edu/~apw/stress/stress-1.0.4.tar.gz'. Checksum mismatch!".

Workaround: Use 2.8b2 or remove the stress recipe under "meta-toradex-demos/recipes-support/stress/stress_1.0.4.bb" (this will use a fixed version of stress in openembedded-core/meta/recipes-extended/).

Description: Currently we use an LXDE/GTK+ based desktop for our demo images targetting modules which provide enough storage. Moving this to a LXQt/Qt5 based desktop. This aids customers who want to start developing a Qt5 based application.

Description: After building an image completely successfully, building the same image the next day without any changes leads to an error "do_image_teziimg: Error executing a python function in exec_python_func()".

Workaround: Make an unrelated change in any recipe to force recreation of the rootfs.

Description: Currently, we use an init script which starts X directly and then a Qt demo application. This has some drawbacks, e.g. when one wants to start a touch calibration or the likes. Use some readily available X startup system, e.g. xinit as a better base customers can build upon.

Workaround: Please find a suitable systemd service in the following recipe:
http://git.toradex.com/cgit/meta-toradex-demos.git/tree/recipes-images/images/angstrom-qt5-x11-image.bb?h=rocko#n4

Description: Upstream libusbgx accepted our implementation of OS Descriptor support. However, during review process the configuration schema changed slightly. Update libusbgx to the latest upstream version and use the new configuration format.

Description: Enable "user debug" which enables kernel messages when a user process crashes due to an exception.

Description: As per amendment to http://developer.toradex.com/knowledge-base/toradex-software-versioning-convention

Description: Update our i.MX kernel to the 4.9-1.0.x-imx branch of the FSL community kernel aka linux-fslc-imx which includes NXP's latest 4.9.11 1.0.0 GA release changes.

Description: Update meta-lxde to build the latest LXDE sources. The latest lxpanel release doesn't work with our GTK+3.

Description: Allow for easier OpenEmbedded machine configuration by our customers.

Description: The config block check aka check_configblock may fail during update depending on the size of the hardware area boot partition which may lead to the config block not getting properly migrated or updated if still using parts of the legacy update procedure.

Workaround: Use U-Boot's built-in 'cfgblock create' functionality or use the Toradex Easy Installer where applicable. Alternatively find fixed legacy U-Boot update scripts in the -next branch of our meta-toradex-demo repository.

Description: If an image creates a rootfs which is exactly a multiple of 64 MByte and then if one executes in U-Boot 'run update' the detection that all 64 MByte chunks have been flashed fails and the update never completes. Note that the Toradex Easy Installer is not affected.

Workaround: Check the last rootfs chunk on the update media and create a zero length chunk with incremented number, e.g.: $ ls -l //colibri-imx6/ ... -rw-r--r--. 1 root root 67108864 Jul 12 15:13 root.ext3-106 -rw-r--r--. 1 root root 67108864 Jul 12 15:13 root.ext3-107 -rw-r--r--. 1 root root 48128 Jul 12 15:13 SPL ... $ touch //colibri-imx6/root.ext3-108

Description: Support forcing U-Boot's 'cfgblock create' command to overwrite an existing config block e.g. using a -y parameter and therefore not prompting the user for easier scripting.

Description: Hitting the eject button either in the PCManFM file manager (pcmanfm) or the Disks gnome-disk-utility tool (gnome-disks) fails as follows due to the eject command line tool being missing:
Error ejecting media
Error ejecting /dev/sda: Error spawning command-line 'eject "/dev/sda"': Failed to execute child process "eject" (No such file or directory) (g-exec-error-quark, 8) (udisks-error-quark, 0)

Description: Add the driver for RTL8188EU which is e.g. used in LM816 to our standard images.

Description: Add support for Capacitive Touch Display 7" Parallel V1.0A.

Description: The SGTL5000 driver in the Linux Kernel currently only supports one codec. The driver would need amending so that multiple codecs can be used. The issue is the statically created VDDD_LDO regulator.

Workaround: For i.MX based modules update to BSP 2.7b3 or later. With the backport of 'ASoC: sgtl5000: Fix regulator support' into the toradex_4.1-2.0.x-imx this driver limitation has been removed.

Description: In the 3.14 based kernels the device tree property "linux,rs485-enabled-at-boot-time" allowed to enable RS485 at boot time. This device tree property so far had no effect on 4.1 based releases.

Workaround: This is now implemented in our toradex_4.1-2.0.x-imx-next branch.

Description: Wakeup on CAN does not work in suspend mode with FlexCAN with 4.1.39 kernel.

Description: Update toradex-bsp-platform.git branch LinuxImageV2.6.1 to the latest of the jethro branches. Note that we do not provide any binary demo images.

Description: Since the move to the toradex_4.1-2.0.x-imx kernel poweroff fails powering off the PMIC once Linux reached halt.

Workaround: One could poweroff the carrier board by using a GPIO. http://developer.toradex.com/knowledge-base/gpio-(linux)#GPIO_PowerOff

Description: The mmc-utils allow e.g. inspecting the current health and life time estimation of the on-module eMMC.

Description: Recently Ångström switched to using the gcc 6 compiler in their 2016.12 aka morty branch. Update meta-angstrom to latest in order for us to also make use of the Linaro gcc 6 compiler.

Description: On modules with newer kernels we set up a composite USB gadget with an RNDIS and a ACM USB endpoint providing a virtual Ethernet and serial link on the USB client port. Currently for Colibri VF a getty is spawned on the serial link giving you a login console on that connection. All other modules do not spawn a getty. We no longer spawn a getty on any module since some host platforms do have issues with composite USB gadgets.

Workaround: Please have a look at the following article on our developer website for more information: http://developer.toradex.com/knowledge-base/usb-device-mode-(linux)

Description: Don't output anything on the debug console unless there is a fatal error. This has been implemented by two defines. The following disables console output in the regular program flow and is enabled in all our configurations: CONFIG_SPL_SILENT_CONSOLE=y The following disables all output on the console and may be enabled by the customer requiring a custom built U-Boot CONFIG_SPL_DISABLE_CONSOLE

Description: Configure optimised MMC read-ahead.

Workaround: Manually set /sys/block/mmcblk0/queue/read_ahead_kb.

Description: Include linuxptp in BSP image

Description: The IPv6-in-IPv4 tunnel driver creates an additional network interface (sit0). To avoid confusion around that interface and since the sit interface is only used seldom the driver should be made available as a module.

Description: Updates our downstream U-Boot to 2016.11. This also includes a newer UBI/UBIFS stack which fixes issues such as "Error reading superblock on volume 'ubi0:rootfs' errno=-22" when using UBI fastmap in U-Boot.

Description: In later OE versions the default SSH config changed so that X11 forwarding is not allowed. $ ssh -X root@192.168.10.185 X11 forwarding request failed on channel 0

Workaround: Edit /etc/ssh/sshd_config to include X11Forwarding yes

Description: When connecting the module using USB device connection, the module provides an IP address via it's own DHCP server. The DHCP server uses DHCP Option 3 (Router) to announce itself as router which can lead to internet connection interruption on the host.

Description: OE migrated the sato image to GTK+ 3. This includes pcman-fm with its libfm. As lxpanel is using libfm we have to follow here or provide our own pcman-fm/libfm recipes. If we move to GTK+ 3 I guess we should do it with all GTK+ based software. e.g all of lxde/lxdm (which may have some issues), the GPIOconfig tool and tegrastats-gtk.

Description: Udisks development has stalled in 2014, udisks2 seems to be the successor. According to the OE recipes udisks2 also has less dependencies (notable lvm2, which adds almost 3.2MiB to the image and is not commonly used in embedded systems as well as sg3-utils, another 1.1MiB). Udisks2 also has a command line utility see: https://zeth.net/2014/05/28/modern_mounting_with_udisks2.html.

Description: As OE moves to GCC-6 we should provide our U-Boot and Kernel sources in a way that they can be built with gcc 6. This would allow customers taking our BSP and using it with a later Yocto project release.

Description: Separate the 'one size fits all' meta-toradex layer into BSP layers by SoC vendor and a software layer for the demo images.

Description: Unfortunately, the older Linux kernel 3.14.52 as used in V2.6 does disable the SD card power rail VGEN3 upon boot which is reported as follows:
VGEN3: disabling
Subsequent SD card operation fails as follows:
mmcblk1: error -110 sending status command, aborting

Workaround: Please find an updated device tree as per the following commit:
http://git.toradex.com/cgit/linux-toradex.git/commit/?h=toradex_imx_3.14.52_1.1.0_ga&id=7659fe414d37861050ec909bb2d27c4bfca87d27

Description: The labels on special keys such as caps lock, enter or tab are missing.

Workaround: A fix is already available on the V2.6-next Meta-Toradex branch.

Description: Gstreamer may freeze when generating its initial database on some modules resulting in the following error message: (gst-plugin-scanner:683): GLib-GObject-WARNING **: cannot register existing type 'GstImxCompositorPad'

Workaround: The following gets you around this: mv /usr/lib/libgstimxcompositor.so.0.12.0 /usr/lib/libgstimxcompositor.so.0.12.0.orig gst-inspect-1.0 mv /usr/lib/libgstimxcompositor.so.0.12.0.orig /usr/lib/libgstimxcompositor.so.0.12.0 Alternatively one may uninstall libgstimxcompositor0 as follows: opkg remove --force-depends libgstimxcompositor0

Description: When triggering the DCD signal an interrupt is generated which is not handled by the UART driver.

Description: We are currently chasing a strange race condition/sequencing issue concerning eMMC seen on certain Colibri iMX6 modules. An affected module will continue to boot off the regular eMMC user area while our update scripts will update the one located in the boot area which may lead to quite some confusion/inconsistencies.

Workaround: Just manually enter the following from within U-Boot for now and you should be fine again:
Colibri iMX6 # mmc partconf 0 1 1 0
More information about this is available here: http://developer.toradex.com/software-resources/arm-family/linux/linux-booting#eMMC_Hardware_Boot_Area_Partitions_ApalisColibri_iMX6_and_ApalisColibri_T30

Description: Move the machine support of the i.MX 6 based modules into the community driven meta-fsl layer. <machine>.conf, U-Boot and Linux recipes are now available in meta-fsl-arm-extra starting with the OE 'jethro' release.
Note: The V2.5 BSPs which are based on the OE 'fido' release have the Toradex i.MX 6 machine support still in meta-toradex.

Description: Use Analog Camera Adapter (ACA, formerly ACM) as Video Source.

Description: Implement Suspend Modes (and Wakeup)

Description: Support analog inputs from STMPE811 via IIO framework.

Workaround: Use V2.2 beta 1 based on older Linux kernel 3.0.35 for now.

Description: `fdtfile` variable always takes precedence over `fdt_board`

Workaround: From U-Boot, use the following commands to properly use the `fdt_board` variable: ``` setenv fdtfile setenv fdt_board ${carrier_board} # e.g. setenv fdt_board dahlia saveenv reset ``` replacing `${carrier_board}` with the actual carrier board name according to the dtb filename.

Description: XDG Base Directory Specification (e.g. `XDG_RUNTIME_DIR`) variables are not set when connecting over ssh using dropbear

Workaround: Move from dropbear to openssh or manually set the required variables

Description: Later distros like Fedora 36 will fail to connect as follows unless the configuration is explicitly weakened: Unable to negotiate with 192.168.10.2 port 22: no matching host key type found. Their offer: ssh-rsa scp: Connection closed

Workaround: Put the following in your ~/.ssh/config below resp. host you are trying to connect to: PubkeyAcceptedAlgorithms +ssh-rsa HostkeyAlgorithms +ssh-rsa

Description: Unfortunately, the current U-Boot SPL is incompatible with the former aka BSP 2.8.x U-Boot. This may be an issue if trying to install a BSP 2.8.x using the legacy update procedure. Using the Toradex Easy Installer does not exhibit this issue.

Workaround: Using the Toradex Easy Installer does not exhibit this issue. If you absolutely have to use the legacy update procedure make sure to also explicitly separately update the U-Boot SPL as well e.g. as follows:
run setupdate
run update_spl
run update

Description: One may easily flash any Toradex product's ConfigBlock into any module as there are currently no plausibility checks done if the configblock written with a USB barcode scanner. This scenario is very unlikely to happen with a Toradex customer.

Description: There are some color issues on RGB displays that look like pixelclock may not be set correctly. By default we output VGA timings for the analog RGB output. Change the configuration according to https://developer.toradex.com/knowledge-base/display-output-resolution-and-timings-linux to get the right resolution, timing, and signal polarities for your display.

Description: Sync U-Boot DTS with the Linux mainline

Description: Add support for the memory bus

Description: Support initiating power-off as well as switching carrier board off

Description: Add support for HDMI Audio

Description: Add support for the on-SoM SGTL5000 audio coded as well as other on-SoC digital audio interfaces

Description: Add support for the Analogue Camera Adapter (ACA)

Description: Add support for multimedia playback such as Video, Audio, etc.

Description: Add support for suspend/resume including wake-up sources (e.g. RTC, GPIO)

Description: Add support for watchdog

Description: Add support for SPI

Description: Add support for PWM

Description: Add support for Analog Inputs

Description: Add support for Analog Audio Mic in

Description: Add support for Analog Audio Line In

Description: Add support for USB Client

Description: UHS-I modes must be set in the device tree, to make the feature work consistently.

Description: Even with our improved driver timeouts and reads from false channels may be rarely observed when using STMPE811 ADC.

Description: While the CAN transceiver regulator is properly powered-down on non-use such functionality during suspend is currently missing in flexcan.c.

Workaround: A custom power-down GPIO may be implemented.

Description: For single antenna set single_rf=0x01

Description: On 32-bit systems, Linux uses a 32-bit signed integer type 'time_t' to represent the time at various locations. It gives the time as seconds relative to 1970. The time_t type wraps at "2038-01-19 03:14:07", so all users of time_t likely fail when a type_t instance is set to a timer after that date. This issue is applicable to all 32-bit systems and will be fixed in the mainline eventually.

Description: The gatttool is deprecated, GATT functionality is available through bluetoothctl.
https://docs.ubuntu.com/core/en/stacks/bluetooth/bluez/docs/reference/gatt-services

Description: Currently there is no suitable browser which fits in the LXQt recipe. Find a suitable browser and integrate it into the layers.

Description: The ath10k firmware for Qualcom Atheros QCA988x Wi-Fi devices is broken in BSP 2.8b1.

Workaround: Update resp. firmware in /lib/firmware/ath10k from latest linux-firmware git.

Description: Our 2016.11 U-Boot recipe in meta-toradex-nxp fails to build. - For iMX6 there may be issues with what machine file is taken depending on the sort order in bblayers.conf as the one in meta-freescale-3rdparty does not (yet) know about SPL.

Workaround: - Sort build/conf/bblayers.conf so that meta-freescale-3rdparty is after meta-toradex-nxp.

Description: During installation of V2.6 directly from the Toradex Easy Installer U-Boot the following error message is shown but otherwise ignored by the installation procedure: Unknown command 'patch_ddr_size' - try 'help' As a consequence only 256MB of RAM will be available.

Workaround: Just manually execute the patch_ddr_size command once U-Boot from V2.6 is installed. For existing production programming scenarios we do recommend to first separately update just U-Boot only (e.g. doing run setupdate; run update_uboot; reset) in order to make sure any further production programming scripting will proceed as before.

Description: For unknown reason /etc/profile does not get properly sourced upon graphical login. Not only does the shell prompt look strange in a desktop terminal but fw_setenv also does not work as it is missing some configuration: When using fw_setenv from a modules desktop environment one gets an error indicating that the boot partition is not writable. sh-4.3# fw_setenv x z Write error on /dev/mmcblk0boot0: Operation not permitted Error: can't write fw_env to flash

Workaround: Revert to a serial terminal or just manually source /etc/profile which will also properly configure fw_setenv: sh-4.3# . /etc/profile root@apalis-t30:~#

Description: The usbg.service fails to start if the config block is missing. As a result the RNDIS network is not started on the USBC port.

Workaround: Either restore the configblock in U-Boot or start the usb gadget from the Linux command line: echo `ls /sys/class/udc/` > /sys/kernel/config/usb_gadget/g1/UDC

Description: The ADV7280 Video ADC used on the Analog Camera Module ACA is capabable of deinterlacing video. In doing so it creates a full frame for each half frame and thus doubles the framerate. When feeding the video stream into gstreamer the original framerate is assumed to still be valid. That will not be noticed if the stream is immediately displayed, however when the stream is recorded in a file the framerate gets wrongly coded and thus the resulting stream runs at 50% of its original speed.

Workaround: Disable the deinterlacer in the driver, recompile and deploy the kernel module. Comment the HW_DEINT macro: http://git.toradex.com/cgit/linux-toradex.git/tree/drivers/media/platform/mxc/capture/adv7280.c?h=toradex_4.1-2.0.x-imx#n118 The following gstreamer pipeline also works as a solution without disabling hardware deinterlace: gst-launch-1.0 -e -v \ imxv4l2videosrc do-timestamp=true crop-meta-x=16 crop-meta-y=16 crop-meta-width=660 crop-meta-height=522 ! \ textoverlay text="Hello_World" shaded-background=1 font-desc="Arial 22px" ! \ tee name=tx \ tx. ! \ vpuenc_mpeg4 bitrate=1000 ! queue ! mux. \ tx. ! \ imxeglvivsink \ alsasrc do-timestamp=true ! audio/x-raw, format=S16LE, rate=44100, channels=2 ! \ imxmp3audioenc bitrate=96 ! queue ! mux. \ avimux name=mux ! \ filesink sync=true location=video.avi

Description: At least Fedora 25 for ARM currently just hangs upon booting the kernel without any further messages being printed.

Description: If the SPL can't load the bootloader it currently prints a message and hangs. Change that to print a message and start in Recovery Mode, aka. Serial Download Mode.

Workaround: Go manually into Recovery Mode. Refer to the modules data sheet for possible procedures.

Description: On first boot the rootfs partition gets expanded to the full size of the partition it lives in. This resizing process adversely affects system performance for the first few minutes until completed. Compare with: http://git.toradex.com/cgit/meta-toradex-bsp-common.git/tree/recipes-core/fs-init

Description: On some monitors HDMI EDID does not negotiate correct timings.

Workaround: Adding/removing mxc_hdmi.only_cea=1 to the kernel command line may help.

Description: The UART DCD/DSR/DTR/RI signals are not integrated into the driver.

Workaround: Configure them to be GPIO and read/set them from userspace.

Description: In U-Boot the USBO1 and USBC ports for Colibri and Apalis respectively are configured to be client only.

Description: On Aster, Orchid and Viola the USB power enable pin (SODIMM 129) is used for both USB ports USBC and USBH. For all modules but the Colibri iMX7S the Linux kernel controls the USB Power Enable only from the USBH port driver. Thus USBC will be non functional if used as a USB Host when the USBH port is disabled in the kernel (i.e. in the device tree for newer or in the platform data for older kernels). Note that on the Evaluation Board and on Iris the USB Power gets enabled when a USB OTG kabel gets connected.

Workaround: Do not disable the USBH port or change the kernel in a way that the USB Power Enable is controlled by the USBC port as well.

Description: For many utils (e.g. ls) we use busybox in our image. These utils in the used busybox version display chars outside of the 7 bit ASCII range as a '?' even if the locale is set correctly and the system uses e.g. UTF-8.

Workaround: Just enable UNICODE in the BusyBox configuration and re-compile.

Description: Using a Linux logo be it the penguins or a custom one as e.g. explained at http://developer.toradex.com/knowledge-base/splash-screen-linux does not work on the HDMI output. When the kernel sets up the display driver it first sets up VGA resolution subsequently doing DDC/EDID and then sets the final resolution. While the Logo is drawn during the VGA resolution setting it is lost later on.

Workaround: On Apalis/Colibri iMX6 one may use the U-Boot splash screen on HDMI output as well.

Description: Xinput-calibrator may fail when axis are swapped. Usually a single axis swapped works however when there are multiple ones swapped the algorithm may fail getting any useful calibration coefficients.

Workaround: Avoid swapped axis e.g. by fixing the hardware wiring or pre-configure them via e.g. /etc/X11/xorg.conf as follows:
Section "InputClass"
    Identifier    "ResistiveTouch"
    MatchProduct  "stmpe-ts"
    Option    "SwapAxes"  "1"
EndSection

Description: At boot the kernel prints the following error message: `physmap-flash 8000000.sram: map_probe failed`

Description: Splash screen isn't shown during boot time

Description: Add support for the Toradex PCAP displays (capacitive touch screens)

Description: Add support for Ethernet

Description: The new Iris V2.0A carrier board allows to switch the power of the SD card interface. Add support for this to the BSP.