BSP Layers and Reference Images for Yocto Project Release

Description: Kernel stuck at enumerating PCIe on Colibri iMX8X non-wifi modules.

Workaround: In U-Boot enter 'setenv tdxargs initcall_blacklist=imx6_pcie_init && saveenv'

Description: If the HDMI firmware gets loaded in U-Boot, LVDS and HDMI won't work concurrently.

Workaround: Load HDMI firmware in linux from /lib/firmware like the BSP does it by default.

Description: Some defconfig and board names have changed with the move the later 2020.04 U-Boot as we did not mainline it the same way as it was in the downstream U-Boot. Let us clean this up and only use proper Toradex product names e.g. apalis-imx8, apalis-imx8x and colibri-imx8x.

Description: UMS command doesn't work on Verdin iMX8M Mini.

Description: With the move to the NXP L5.4.24-2.1.0 BSP we will have all our downstream and mainline/upstream Linux kernels based on 5.4. Using 5.4 based backports with this does not make any sense so drop it.

Description: Enable systemd-analyze.

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

Description: Update to SCFW Porting Kit 1.5.0 (Release imx_scfw_2020q2).

Description: Move to newer mainline U-Boot 2020.07.

Description: Update downstream kernel to the latest NXP BSP L5.4.24_2.1.0.

Description: The OV5640 camera currently only works when requesting a 640x480 resolution. All higher resolutions have the gstreamer pipeline start but then no video data get displayed.

Description: The kernel for i.MX8 series based SoM is currently provided uncompressed, i.e. as an Image in the BSP. The Toradex Easy Installer now provides a gzip compressed kernel as part of its fit image. U-Boot uncompresses the kernel when loading the fit image Use also a compressed kernel in the BSP and evaluate what options we have to decompress in U-Boot.

Description: Create udev rules to symlink ADC devices.

Description: Add SODIMM names to the module-level device tree.

Description: The following bug may be observed during boot: [ 17.239719] 002: BUG: scheduling while atomic: swapper/2/0/0x00000002 [ 17.239737] 002: Modules linked in: gpio_apalis_tk1_k20 apalis_tk1_k20_can apalis_tk1_k20_adc apalis_tk1_k20_ts xhci_tegra apalis_tk1_k20 nouveau ttm [ 17.239771] 002: CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.4.43-rt25-4.0.0-devel+git.544ddfe58bb0 #1 [ 17.239777] 002: Hardware name: NVIDIA Tegra SoC (Flattened Device Tree) [ 17.239788] 002: [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [ 17.239804] 002: [] (show_stack) from [] (dump_stack+0xbc/0xd0) [ 17.239813] 002: [] (dump_stack) from [] (__schedule_bug+0x70/0x84) [ 17.239821] 002: [] (__schedule_bug) from [] (__schedule+0x5f0/0x900) [ 17.239830] 002: [] (__schedule) from [] (schedule+0x60/0x110) [ 17.239835] 002: [] (schedule) from [] (rt_spin_lock_slowlock_locked+0x11c/0x300) [ 17.239841] 002: [] (rt_spin_lock_slowlock_locked) from [] (rt_spin_lock_slowlock+0x54/0x84) [ 17.239846] 002: [] (rt_spin_lock_slowlock) from [] (tegra_clear_cpu_in_lp2+0x60/0xc0) [ 17.239854] 002: [] (tegra_clear_cpu_in_lp2) from [] (tegra114_idle_power_down+0x5c/0x7c) [ 17.239863] 002: [] (tegra114_idle_power_down) from [] (cpuidle_enter_state+0x124/0x60c) [ 17.239875] 002: [] (cpuidle_enter_state) from [] (cpuidle_enter+0x50/0x54) [ 17.239886] 002: [] (cpuidle_enter) from [] (do_idle+0x208/0x298) [ 17.239903] 002: [] (do_idle) from [] (cpu_startup_entry+0x18/0x1c) [ 17.239919] 002: [] (cpu_startup_entry) from [<8010266c>] (0x8010266c) [ 17.261808] 001: BUG: scheduling while atomic: swapper/1/0/0x00000002

Description: Some modules may show various kinds of RAM issues (U-Boot failing to boot fit images due to bad hash, random squashfs errors, random kernel panics when BSP is flashed). Closer analysis identified NXP meanwhile having updated the RAM configuration/initialisation side of things. Updating to NXP's latest Register Programming Aid (RPA) v19 seems to fix those issues. Full validation & verification pending...

Description: Drop downstream legacy flavour kernel/graphics/multimedia stack and only support "new" upstream kernel handling. The downstream kernel gets to old to be used with the new zeus userspace components. Reuse the apalis-tk1 machine name to build a mainline kernel and drop the apalis-tk1-mainline machine.

Workaround: If you need to run the Apalis TK1 with the old downstream kernel use the latest 3.0 Image.

Description: VGA Output not working in U-Boot but in Linux

Description: Add U-Boot boot count support.

Description: Add MXM3 names to the module-level device tree.

Description: Add SODIMM names to the module-level device tree.

Description: Wi-Fi only works partially in access point mode.

Description: The fw_setenv config file uses a hardcoded device file for where the U-Boot environment can be found. (mostly /dev/mmcblk0boot0. Depending on the kernel version the device number might change. Generalize this so that fw_printenv/fw_setenv finds the U-Boot environment independent on how mmc gets enumerated.

Description: Add support to use on board EEPROM

Description: Support MIPI CSI-2 serial camera interface.

Description: The mwifiex_sdio driver goes into an unrecoverable state after firmware of the Wi-Fi chip has crashed.

Workaround: Use mwifiex_sdio driver from backports-5.4.

Description: Update graphics to the latest version from NXP

Description: Update downstream kernel to the latest NXP BSP L4.14.98_2.3.0.

Description: Onboard Bluetooth is not fully validated and documented

Description: Add support for MIPI-CSI

Description: Add SDIO/SD Card Support

Description: Add support for SDIO / SD Card

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

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

Description: Amend i.MX8 content to https://developer.toradex.com/knowledge-base/display-output-resolution-and-timings-linux

Description: Support the new product version Apalis iMX8 V1.1A with our embedded Linux BSP.

Description: Add support for DSI to HDMI Adapter

Description: Toradex Easy Installer is supported but not documented

Description: Add UART Support

Description: Add support for Ethernet in bootloader and kernel.

Description: Add support for I2C

Description: Add support for UART

Description: Add support for Analog Audio Mic in

Description: Add support for Analog Audio Line In

Description: Add support for USB Client

Description: Add support for Ethernet

Description: Add support for DVI monitors

Description: Support on-module WiFi is added.

Description: Add support for suspend/resume

Workaround: To avoid crash on suspend, add the boot kernel parameter "clk_ignore_unused".

Description: Add support for CAN

Description: Add and validate WiFi support on Apalis iMX8.

Description: Support initiating power-off, support switching carrier board power-off

Description: Add support for SPDIF Audio

Description: Add support for DDC for HDMI/DVI

Description: Add support for PCIe

Description: Add support for I2C

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: Add support for DVI-D monitors

Description: Initial support for Verdin Development Board 1.0A added

Description: Amend the following page with instructions on how to build for Apalis iMX8 and Colibri iMX8X, including the toolchain to use: https://developer.toradex.com/knowledge-base/build-u-boot-and-linux-kernel-from-source-code

Description: pixelclk-active = 1 still drives data at CLK in active low

Workaround: Use display resolution timings in kernel-parameters set in u-boot.

Description: U-boot: introduce update_uboot_recovery env wrapper. This should simplify and unify the process of updating u-boot stored in eMMC/NAND for development purposes, putting aside all differences of each SoM (NAND vs eMMC; Tegra vs iMX etc.).

Description: Support on-module Bluetooth

Description: Support for DDC for HDMI/DVI os added.

Description: Support for 2D/3D graphics acceleration is added.

Description: Add support for MIPI-CSI

Description: Support for I2C is added.

Description: Support for UART is added.

Description: Support for Analog Audio Mic-In is added.

Description: Support for Analog Audio Line-In is added.

Description: Support to switch shared USB ports automatically from host to client mode and vice versa is added.

Description: Support for USB Host is added.

Description: Add support for DVI monitors

Description: We documented building the SCU firmware here
https://developer.toradex.com/knowledge-base/build-custom-imx-88x-system-controller-firmware-scfw
Toradex does not recommend customers rebuilding their own SCU firmware.

Description: While V1.0B modules with their bring-up BSP are fused and do boot from the primary eMMC hardware boot area partition their U-Boot environment still gets stored to the regular eMMC hardware user area partition which may corrupt the primary boot FAT partition.

Workaround: Do NOT save your U-Boot environment or your primary boot FAT partition will get corrupted.

Description: Move to a newer mainline U-Boot for future-prove support.

Description: U-boot: "Could not initialize PHY FEC" issue after software reboot due to too low auto-negotiation timeout value.

Workaround: Do cold reboot with the reset button or power off/on.

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: Support the new product version [00491000] Apalis iMX8QP 2GB V1.0A with our embedded Linux BSP.

Description: Boot Apalis iMX8QM V1.0B and later from internal/on-module eMMC instead of an external SD card.

Description: Add support for SATA

Description: Add support for HDA and/or AC97 and/or I2S

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

Description: Add support for DVFS

Description: Add support for PWM

Description: Add support for Ethernet

Description: We decided to remove legacy update tool support from BSP 3.0.

Workaround: Stick to BSP 2.8.

Description: util-linux among others provides taskset for setting a processe's CPU affinity.

Description: The Angstrom distribution was changed to a minimal image provided by Toradex, based on Poky.

Workaround: Use the latest stable BSP 2.8.

Description: Support the new product version [00371001] Apalis iMX8QM 4GB WB V1.0B with our embedded Linux BSP.

Description: U-Boot hangs early if certain UHS-I SD cards are used.

Description: 4.4.220 and 4.9.220 which both have a matching RT-patch available.

Description: ADC readings may face a jump behavior due to keeper enabled by default.

Workaround: Disable keeper in ADC pinmuxings.

Description: hostapd systemd does not work on the startup

Workaround: In /lib/systemd/system/hostapd.service, change the line "After=network.target" to "After=multi-user.target"

Description: The analogue camera adapter/module connected to the parallel camera interface of the Colibri T20 is not working.

Workaround: Manually enabling the BL_ON GPIO which is used as NRESET on the ACA may help.

Description: Optional UHS-I SD card support is currently not working on the Colibri iMX6ULL.

Workaround: Fix the device-tree, have a look here: http://git.toradex.com/cgit/linux-toradex.git/commit/?h=toradex_4.14-2.0.x-imx-next&id=7d0f5d6ad4350f0e1a3e10c4635f4bb20c1e63f9

Description: for operating Wi-Fi/BT capable modules with a single antenna please have a look at the following article on our developer website:
https://developer.toradex.com/knowledge-base/operating-wifibt-capable-modules-with-a-single-antenna

Description: The MCP2515 SPI CAN controller as found on the Colibri Evaluation Board is disabled by default in favour of toradex,evalspi SPIDEV. Let us change this like on the other Colibri modules.

Workaround: Just add Status = "disabled" to the toradex,evalspi device tree node and okay to the MCP2515 one.

Description: We switched from CRDA to direct loading of the Wi-Fi regulatory domain database in-kernel.

Description: If an Android phone is connected to the Colibri iMX6ULL, then an unexpected Linux kernel bug is shown and Bluetooth stops connecting. The only solution is to restart the module.

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: Kernel crashes after M4 firmware started. The only log message is "Starting Kernel ...".

Workaround: Enter the following commands in U-Boot: setenv fdt_high=0xffffffff saveenv

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 in the master branch on meta-freescale. We pulled those into the rocko branch of meta-toradex-nxp.

Description: Wake from suspend is not working on Colibri iMX6ULL 512MB Wi-Fi / Bluetooth IT.

Description: Colibi imx6ull v1.0 supports BT 4.0 and BLE 4.1 Starting with imx6ull v1.1 we support BT\BLE 5.0

Description: The alternate function of the pins in the IOMUXC SNVS is wrongly displayed. These pins are always GPIO. (TAMPER[0-9], BOOT_MODE[0-1]. Fix this.

Description: We have unused pinmuxings for flexcan1 and flexcan2. Unify the pad settings for the two.

Description: The Colibri iMX7 dts files define a flexcan1 node, but the developer webpage https://developer.toradex.com/knowledge-base/can-(linux) only describe how to enable a (non existing) flexcan2 node. Clean that up. Probably one should add in both places the missing node.

Description: The firmware might behave erratic/crash when loading using U-Boot bootaux command with an elf firmware.

Description: The Linux kernel 4.1.44-2.7.4 may report a wrong i.MX 6 SoC version upon boot:
[ 0.109969] CPU identified as i.MX6Q, silicon rev 0.6

Workaround: The later Linux kernel 4.9.87-2.8.3 does report it correctly:
[ 0.069884] CPU identified as i.MX6Q, silicon rev 1.6
You may find a fix on the toradex_4.1-2.0.x-imx-next branch.

Description: The Colibri iMX6ULL V1.0 and V1.1 HW has no discrete pull ups on the I2C bus to the touch controller. This may lead to unreliable communication with the internal 100k pull ups and the used 80kHz I2C clock.

Description: Apalis TK1 LVDS drive strength settings are hard-coded. Idea is to move those to the device tree as well.

Workaround: For now, settings can be changes in drivers/video/tegra/dc/sor.c file. Function tegra_dc_sor_enable_lvds contains writes to NV_SOR_LANE_DRIVE_CURRENT and NV_SOR_LANE4_DRIVE_CURRENT registers. Registers definitions can be found in the "Tegra K1 Reference Manual".

Description: The i.MX6 ULL's watchdog is used to reset the SoC on reboot. The watchdog is configured to use the SoC's internal reset signal which does not generate a reset pulse on nRESET_OUT. Change the watchdog configuration to use a SoC external HW signal. This will additionally change the 'Reset cause' message from U-Boot from WDOG to POR. Note that the bmode_usb application in Linux no longer works due to the reset cause change. The behaviour in U-Boot has not been changed, the U-Boot command 'bmode usb' works as before.

Description: Forward ported commit 7ad9771527d2 ("apalis-tk1: fix PCIe reset for reliable gigabit Ethernet operation") was never validated. Turns out it does not work and may lead to PCIe gigabit bring-up issues.

Description: Generating a legacy update media using Debian Stretch and subsequently updating an Apalis TK1 failed during mounting the root file system.

Workaround: We recommend using the Toradex easy installer on platforms where it is supported. For the legacy update procedure, the easiest is to use one of the supported distributions:
https://developer.toradex.com/knowledge-base/board-support-package/openembedded-(core)#Prerequisites
Other distributions may have the option metadata_csum enabled per default for mkfs.ext4 (Debian Stretch, Arch, ...). This option is not supported on Linux kernels below 3.18 and generates a kernel panic during boot after the legacy update. As a workaround, one can disable this option in /etc/mke2fs.conf before executing the update.sh script. The ext4 man page also has a list of options with their corresponding supported kernels, which may be helpful to refer to in case of legacy update attempts on more exotic systems.

Description: Image features (e.g. tools-debug or others documented at https://www.yoctoproject.org/docs/2.2/ref-manual/ref-manual.html#ref-features-image) do currently not work with the console-tdx-image. The reason is that the image is inheriting from image as opposed to core-image.

Workaround: You may use core-image instead but it might have additional effects.

Description: Modules with NANYA RAM chips assembled may rarely show timing issues leading to non-booting modules or otherwise unstable behaviour. We adjusted the on-die termination settings and fully validated & verified various modules in our temperature chambers.

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: With the toradex_4.9-1.0.x-imx kernel the sgtl5000 audio codec is bound to the I2S interface with the simple card driver but the driver is not part of the kernel config.

Workaround: Add CONFIG_SND_SIMPLE_CARD to the kernel config.

Description: When running with HS400 at 100 MHz the Kernel may report eMMC errors such as "mmcblk0: error -84 transferring data" during boot-up. In some cases, it might cause the boot process to fail.

Workaround: Running HS400 at 200 MHz seems to work more stable.

Description: Update to NVIDIA's latest Linux for Tegra aka L4T R21.7 https://developer.nvidia.com/linux-tegra-r217.

Workaround: The Linux kernel changes are already available on the toradex_tk1_l4t_r21.7-next branch. The rest of the integration is already available in the rocko-next branch of our meta-toradex-tegra repository.

Description: Our Yocto Project layer readmes may not be up-to-date.

Workaround: Make sure to use valid combinations e.g. as available as tagged repo meta data:
http://git.toradex.com/cgit/toradex-bsp-platform.git

Description: Unfortunately, starting with BSP 2.8b2 the regular LXDE based demo image root file system reached a size which does no longer easily fit into 256MB of RAM, therefore, failing the legacy update procedure (it may just hang or even crash but definitely fails updating the root file system).

Workaround: Doing the following before 'run setupdate; run update' helps:
setenv fdt_addr_r 0x01000000

Description: Colibri iMX6ULL Crashing After Resuming from Suspend on Iris

Workaround: A patch is available in toradex_4.9-1.0.x-imx-next "arm: imx: gpc: do not poweroff M/F mix in suspend"

Description: Apalis TK1 legacy update is not deploying the v1.2 devicetree.

Workaround: Use Toradex Easy installer or u-boot ums mode.

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: When the UART with DMA (default) receives a character with framing errors (e.g. due to a break signal) the FIFO can get out of sync. Once out of sync, characters appear delayed only after new characters have been received.

Workaround: Reopen UART in case overruns have been detected (see /proc/tty/driver/fsl-lpuart). Use UART without DMA which handles Framing Errors correctly.

Description: While all other eMMC based Toradex SoMs do support the fatwrite U-Boot command the Colibri iMX7 Dual 1GB currently does not. This is especially sad should anybody try using any legacy update procedure e.g. just for flashing the M4 firmware.

Workaround: For now just use UMS, do it from Embedded Linux user space or use the Toradex Easy Installer with a custom image JSON.

Description: Installing a single backport kernel module to an image at build time fails (e.g. by using IMAGE_INSTALL_append in local.conf).

Workaround: Install all backport kernel modules by using the "backports" package.

Description: OE-Core layer did backport more package splits in the linux-firmware recipe. Due to this the HEAD of the morty branch clashes now with a similar split we did in meta-toradex-bsp-common resulting in a fatal QA error. (Compare with commit 0eaef98) ERROR: linux-firmware-1_0.0+gitAUTOINC+bf04291309-r0 do_package: QA Issue: linux-firmware-sd8887 is listed in PACKAGES multiple times, this leads to packaging errors. [packages-list]

Workaround: Delete the lines PACKAGES_prepend = "\ ${PN}-sd8887 \ " from meta-toradex-bsp-common/recipes-kernel/linux-firmware/linux-firmware_%.bbappend

Description: Adding perf to all eMMC-based Images which are less space-constrained than raw NAND ones.

Workaround: You may build a custom image including perf according to your requirements.

Description: PCIe enumeration aka "pci enum" U-Boot command may fail in U-Boot due to some I2C/Power management issue.

Description: Support USB 3.0 SuperSpeed on USBO1.

Workaround: Use USB 3.0 SuperSpeed on USBH4 for now. Alternatively, the mainline Linux kernel already supports USB 3.0 SuperSpeed on USBO1 as well as USBH4. You may also use the latest mainline Linux based demo image Apalis-TK1-Mainline_LXDE-Image as can be found at http://developer.toradex.com/files/toradex-dev/uploads/media/Colibri/Linux/Images/.
Such fix/support may now be found in the 2016.11-toradex-next U-Boot and toradex_tk1_l4t_r21.6-next Linux kernel branches of our git repositories.
Please note that one may not switch back to USB device functionality once USB 3.0 SuperSpeed host functionality has previously been used.

Description: Provide Toradex GPIO tool.

Description: The new Apalis iMX6 Mezzanine board allows access to the MIPI-CSI2 interface. The current device tree has different GPIO assignments for the camera reset and power pins. Change the pin assignment to use Apalis GPIO1 for reset and Apalis GPIO2 for power down.

Description: Forward-port the change to allow configuring the display timings via kernel command line to the Linux kernel 4.9.

Workaround: -

Description: The USBC port does only work in device mode. Switching to host does not work. This is a regression introduced with the move to the 4.9 kernel version.

Workaround: Cherry-pick the following commit: 'ARM: dts: imx6ull-colibri: Specify cable detect as ID and VBUS pin' and recompile and deploy the device tree.

Description: The internal aka on-module RTC is not available since we migrated to the Linux 4.9 kernel (2.8b1).

Description: The system freezes during boot shortly after initializing the MCP2515 CAN controller. The CAN controller triggers a (re)probe of the thermal driver which fails to probe during boot. This late probe causes the driver to access OTOCP registers which are not clocked anymore.

Workaround: Add clk_ignore_unused to defargs in the U-Boot command line (e.g. by using "setenv defargs ${defargs} clk_ignore_unused").

Description: During boot-up of Colibri iMX7 Dual 1GB (with eMMC flash) sometimes the system freezes right after "Starting File System Check on Root Device".

Description: Remove snapd from standard images.

Description: Currently this is hard-coded in some board resp. panel platform files making it rather difficult to test various options around eDP/LVDS. NVIDIA's implementation has partial support for device tree which needs extending and testing.

Description: Add an option to sepcify the 24bpp LVDS output format which is currently hard-coded to what NVIDIA calls 24.0 in their TRM. The alternate option would be called 24.1.

Description: We moved a while ago to a SPL/u-boot.img approach. The SPL runs in SRAM and configures the DDR-RAM, then it loads U-Boot proper into DDR and passes control. In the legacy update procedure, the recovery mechanism however stayed with a monolithic u-boot.imx binary which had to be built separately. Change also the recovery procedure to a download chain of first loading SPL and then u-boot.img. Note that the Toradex Easy Installer works that way successfully for some time.

Description: Switch to the generic compressed Kernel image type (zImage) instead of the legacy U-Boot specific uImage format.

Workaround: Please note that if one is updating from an earlier release one may have to manually fix the U-Boot environment to take this into account as mentioned on the community forum at https://www.toradex.com/community/questions/19860/bsp-28b2-fails-to-load-linux-kernel-due-to-uimage.html

Description: Apalis TK1 did not wake from sleep if using WAKE1_MICO#.

Description: Include hostapd in demo builds. Note that this is only about the naked daemon without any configuration which depends on resp. requirements. So nothing of the hostapd will be automatically started by default.

Description: On Apalis/Colibri T20/T30 both fchdir() and fstat() fail with EBADF when the file was previously opened with the O_PATH flag.

Workaround: Required patches have been backported to our downstream Linux kernel: http://git.toradex.com/cgit/linux-toradex.git/log/?h=tegra-next

Description: The kernel prints "Timeout waiting for hardware interrupt" errors when accessing eMMC, particularly at boot-up.

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

Description: Update apalis-tk-mainline machine to latest Linux kernel mainline 4.14 LTS.

Description: While BSP 2.8b1 does no longer require any special handling older BSPs apalis-tk1-mainline Mesa needed DRI_PRIME=1 to be defined as environment variable in order for OpenGL ES applications like glmark2-es to work right.

Workaround: In older BSPs adding DRI_PRIME=1 environment variable is required for OpenGL ES.

Description: Update to the OpenEmbedded Rocko resp. Yocto Project 2.4 release.

Description: Add a -v parameter to fw_printenv/fw_setenv which outputs the U-Boot source version information.

Description: This release is identical to the previous 2.7b4 release and has passed full validation and verification for Apalis T30, Apalis iMX6, Colibri T30, Colibri VF50, Colibri VF61, Colibri iMX6 and Colibri iMX7.

Description: Add support for PWM.

Description: Bring-up Colibri iMX6ULL 512MB WB IT V1.0A.

Description: It would be very convenient to just be able to install NVIDIA's JetPack via Toradex Easy Installer once available for Apalis TK1.

Workaround: For now just stick to the rather cumbersome manual installation procedure: http://developer.toradex.com/knowledge-base/installing-nvidia-jetpack-with-l4t-on-apalis-tk1

Description: As we juggled around some of the pins the GPIO Tool also needs updating.

Description: Camera support has been greatly improved by an update to the OV5640 driver from our camera partner Antmicro as well as NVIDIA's latest L4T R21.6 update.

Description: As PWM support is currently not available the PWM pin (SODIMM 59) is statically set to output with the value '0' in the regular U-Boot and to an input with pullup in the case of the Toradex Easy Installer. If a connected display has its backlight off in that case one ends up with a dark display. The VGA (RGB DAC) output is not affected.

Workaround: - On the Evaluation Board remove the PWM jumper and hard-wire the desired level. - For a regular image one can change the value from the U-Boot command line: 'gpio set 107'. E.g. add that as the first command to the bootcmd environment variable. - For the Toradex Easy Installer one can configure the pin to gpio and set a value from the U-Boot command line: 'mw.l 020e01a4 5 1; gpio clear 107'.

Description: Provide the Apalis TK1 BSPs also in a Toradex Easy Installer package.

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: So far in U-Boot we violated the PCIe reset timing specification and in Linux we did not do anything about doing the PCIe reset unisono with the separately switchable voltage rail of the gigabit Ethernet chip.

Workaround: A solution to the U-Boot side of things may be found on our -next branch now.

Description: The Colibri iMX7D has 512MiB of memory. However, when running the Cortex-M4 core only half of the memory is available in Linux.

Description: While we developed the bmode_usb utility we missed actually deploying it in any of our images.

Workaround: However the recipe http://git.toradex.com/cgit/meta-toradex-nxp.git/tree/recipes-support/bmode-usb?h=morty does exist and may be built and deployed manually.

Description: Note: This is only an issue for Colibri iMX7S 256MB V1.1C and Colibri iMX7D 512MB V1.1D and later modules.
As it turns out not using LDO2 anywhere at all in the regular case is a bad idea leading to the following:
[ 2.317688] LDO2: disabling
Of course display and SD card still worked on the EvalBoard due to back feeding through some pull-ups however on Viola with just one pull-up it failed once both display and SD card were active...
Currently without an SD card inserted the regulator framework actually powers the LDO2 off however e.g. the BL_ON pin is also on that same rail!

Workaround: The following fixes were integrated:
http://git.toradex.com/cgit/linux-toradex.git/commit/?h=toradex_4.1-2.0.x-imx&id=0284f779bba00b930bd9bb12703e2092478531c7
http://git.toradex.com/cgit/linux-toradex.git/commit/?h=toradex_4.1-2.0.x-imx&id=ac8dcd0d7b7d17ad8ac42b42cb1f51d4417f4950
Fix this by specifying LDO2 to be always on and use the regular 3.3V supply from the carrier board as the vmmc-supply.
Specify that carrier board 3.3V supply to be always on as well to avoid the following misleading message during boot:
[ 2.299654] 3.3V: disabling
One remaining issue is that now in suspend LDO2 is still powered and even adding the following did not help:
regulator-state-mem {
    regulator-off-in-suspend;
};
Further investigation pending.

Description: Unfortunately our current Angstrom/OpenEmbedded/Yocto BSP exclusively uses gstreamer 1.0 which we learned from multiple sources is not really production ready for TK1. We may consider switching to or at least including gstreamer 0.10 in the future as well.

Workaround: Use JetPack for now which allows installing both gstreamer 0.10 as well as 1.0. http://developer.toradex.com/knowledge-base/installing-nvidia-jetpack-with-l4t-on-apalis-tk1

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: Our 2016.11 U-Boot recipe in meta-toradex-nxp fails to build. - The RPM packaging errors out because the generated spec file contains a dash in the Release variable: Release: 2.7.2-gitr60021a4

Workaround: - Edit recipes-bsp/u-boot/u-boot-toradex_2016.11.bbappend so that the PR variable does not contain a dash ('-').

Description: Include multiple Bluetooth and Wi-Fi kernel modules in our BSP demo image release packages.

Workaround: You may find our backports based on Linux kernel 4.11 here: http://git.toradex.com/cgit/backports-toradex.git/log/?h=toradex-4.11

Description: Fix the Colibri iMX7 display timings and allow setting them from the kernel cmdline.

Workaround: Use native mode node in device-tree

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: USB Gadget schema fails to load on Apalis iMX6 Quad 2GB IT and Apalis iMX6 Dual 512MB modules which leads to RNDIS not working.

Description: There is now an experimental meta-snappy which allows regular Yocto project BSPs to support running Ubuntu Core snaps. Integrate this in our regular demo images.

Description: After the RTC has been under-powered, some RTC deliver invalid date/time. The external RTC currently shipped on Toradex evaluation boards has a oscillator fail bit which indicates when RTC does not contain a valid date/time.

Description: Trying to sdboot from an ext4 rootfs fails due to us defaulting to ext3. While the downstream T20/T30 L4T kernel has issues with ext4 later TK1 L4T should work just fine with it.

Workaround: Just change the sdargs to ext4 as follows: setenv sdargs 'ip=off root=/dev/mmcblk1p2 rw rootfstype=ext4 rootwait'

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

Description: Depending on its DVFS state right before hardware reset the Apalis/Colibri T30 module may hang during a subsequent boot. Software reset seems not affected.

Workaround: Either power-cycle or make sure you are running at a higher DVFS state upon hardware reset. A fix for this called 'apalis/colibri_t30: improve vdd core pmic handling' may be found on our U-Boot 2016.11-toradex-next branch.

Description: As on our T30 designs there is a hardware over-temperature shut-off directly via PMIC we should check whether we could at least have an over temperature message shortly before that (e.g. 5 deg C).

Description: Using UBIFS rootfs with extended attributes (xattr, by default used in the Toradex BSP) might cause file system corruptions and lead to an unbootable system. Affected versions:
Colibri_iMX7_LinuxImageV2.6.1Beta1_20160929
Colibri_iMX7_LinuxImageV2.6Alpha1_20160315
Colibri_iMX7_LinuxImageV2.6Beta2_20160701
Colibri_iMX7_LinuxImageV2.7Beta1_20170112

Description: We changed our versioning scheme. Our BSP demo image packages are now e.g. called Apalis-iMX6_LXDE-Image_2.7b2-20170410.tar.bz2. The Linux kernel will report e.g. the version number 4.1.39-2.7.2+gba2f75f and U-Boot will report e.g. 2016.11-2.7.2+g60021a4. Details about the versioning can be found here: https://developer.toradex.com/knowledge-base/toradex-software-versioning-convention

Description: Systemd may hang upon first boot due to certain services like run-postinsts and opkg-configure triggering a configuration reload later causing dynamic device services like the dev-ttyS0 one to hang.

Workaround: A fix has been implemented in our -next branch.

Description: Colibri T20 modules may draw more power be it during regular operation or in suspend.

Workaround: This issue is related to the 'Module May Hang During Boot if HDMI is not Connected' one whose fix can be found on the tegra-next branch of our linux-toradex Linux kernel repository: http://git.toradex.com/cgit/linux-toradex.git/log/?h=tegra-next

Description: The udev rule /etc/udev/rules.d/hdmi.rules which should take care of this now fails with exit code 1. It looks like the RUN part of that rule should be reworked into its separate unit file to be spawned using SYSTEMD_WANTS.

Workaround: Manually call xrandr to get the desired effect.

Description: CPU and GPU thermal throttling is not working which can be seen from /sys/kernel/debug/tegra_throttle/ being empty.

Workaround: Find the fix on our -next branch.

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: With our unified (Linux/WEC) SPL in place we need a way to tell what version of SPL thereof is installed.

Description: Bitbake for some time checks what other packages a package depends on by e.g. examining the output of ldd of a binary or examining used interpreters in scripts. So RDEPENDS are only needed for non obvious packages, e.g. such which get dynamically linked in code or packages providing data. Cleanup our layers.

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: Most of our SoC have a manufacturer defined unique and not alterable number. It's documented here: http://developer.toradex.com/knowledge-base/soc-unique-id-linux

Description: Colibri T20 modules may hang during boot if HDMI is not connected.

Workaround: The fix for this issue may be found here: http://git.toradex.com/cgit/linux-toradex.git/commit/?h=tegra&id=943dd8a82f13c2e31a7f243bb15ae64edf45b7fa

Description: The frame buffer boot configuration integration via kernel command line is still missing.

Workaround: The LVDS configuration is currently hard-coded here: http://git.toradex.com/cgit/linux-toradex.git/tree/arch/arm/mach-tegra/panel-c-lvds-1366-14.c?h=toradex_tk1_l4t_r21.5#n322

Description: At this point the Linux suspend to memory and standby power states are supported ("mem"/"standby"). The standby mode uses a low power run state, whereas suspend to memory makes use uses the SoCs deep sleep mode (DSM). Wakeup from external GPIO as well as internal RTC have been verified working.

Description: When using UART with DMA it can lock up the UART sending path. The serial console might lock up completely.

Workaround: Disable DMA for UART.

Description: With the move to morty all SysV initscripts have been installed which caused interference. This got fixed by finally getting rid of all SysV remnants.

Description: Using keypad driver causes kernel freeze on iMX7

Workaround: Use the generic GPIO driven matrix keyboard driver

Description: Include linuxptp in BSP image

Description: Prepare mainline kernel based machine with noueveau and wayland for Apalis TK1.

Description: The gpio-tool will allow to override pin muxing functionality and test GPIO input/output functionality.

Description: The gpio-tool will allow to override pin muxing functionality and test GPIO input/output functionality at runtime.

Description: Our current PEX 8605 errata workaround violates the PCIe clock and reset specification should no PCIe switch be present as e.g. the case on Ixora.

Description: Our current update procedure reads the rootfs payload in pre split files of 64 MB size. The number of chunks is limited to 89 resulting in a maximum size of 5.5 GB.

Workaround: - use the ums command in U-Boot to export the modules eMMC as a mass storage device. - deploy a minimum rootfs and install the 'big' payload after booting into Linux

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: The Colibri iMX7 SODIMM 45 wake-up configures an internal pull-up while other modules use pull-down. Also some carrier boards use a external pull-down resistor. Configure an internal pull-down resistor on the pin do be consistent with carrier boards and other modules.

Description: Currently our update.sh script limits the partition size to around 8GB by default so even after our automatic resizing only 8GB of the 16GB of available eMMC space can be used.

Workaround: Manually modify the EMMC_SIZE calculation for apalis-tk1 in our update.sh script. Our upcoming Toradex Easy Installer will no longer suffer from this limitation.

Description: Closing the touch device while the touchscreen locks the closing task and leads to a task blocked kernel message.

Description: Add support to use signals from the K20 companion MCU connected to the MXM connector as GPIOs. Basic support will be non-interrupt safe (may sleep) and the latency will be similar to regular SPI GPIO expanders.

Description: Migrate the kernel used on our i.MX 6 based products to be based on the 4.1-2.0.x-imx branch of the FSL community kernel aka linux-fslc-imx which does already include NXP's latest 4.1.15 2.0.0 GA release changes.

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: U-Boot SPL will greatly improve overall system boot flexibility.

Description: So far U-Boot writes a BCB (Boot Configuration Block) crafted in a way to work around errata e9609. This also requires the U-Boot to be written in a way which only uses 3/4 of a page (implemented by the writeboot command). This mode has a drawback in practice: It cannot detect bad blocks marked with the usual bad block marker. Colibri iMX7 V1.1B and later do not suffer errata e9609. In order to overcome the limitations of the work-around, new U-Boot version will write the BCB in a new format which allows detecting bad block markers and use complete pages. This also allows to write the boot loader using standard nand write commands.

Description: Bring-up type specific CSI-2 camera interfaces.

Workaround: http://git.toradex.com/cgit/linux-toradex.git/commit/?h=toradex_tk1_l4t_r21.5&id=4311e45350ad9199a62e5f37b211cee7de4dfb19

Description: As that whole source mirror stuff has been introduced rather haphazardly whoever did that also failed maintaining/updating it since V2.5 e.g. http://sources.toradex.com/V2.5/. The wohle process around this is currently unclear.

Workaround: http://git.toradex.com/cgit/meta-toradex-demos.git/commit/?h=jethro&id=a6c6fa422e9cf9586e0eb8aba40e0460513edf58

Description: Support Apalis UART4.

Workaround: Use UART1, UART2 or UART3 for now. Alternatively the mainline Linux kernel already supports all 4 UARTs.

Description: VisionWorks demo achieves 10FPS on Apalis TK1 & 30FPS on Jetson TK1. Please identify the cause and resolve it.

Workaround: Fixed by a combination of Norrin soctherm and Laguna cl-dvfs just like used on Jetson TK1: http://git.toradex.com/cgit/linux-toradex.git/commit/?h=toradex_tk1_l4t_r21.5&id=3c204d1590b9fcead7169c7f066f6918bcbde55f

Description: All pins without a specific function should be configured for regular GPIO support.

Description: Changing the default settings of multiplexed pins of the camera input allows saving up to 100mW of power.

Description: Using Colibri iMX7S freezes when using Viola. Could be a boot rom issue.

Workaround: Disable SNVS RTC in the device tree.

Description: When booting the M4 core using U-Boot (m4boot) rpmsg seems not to work (the kernel module loads but the initial test message does not seem to arrive/be recognized at the FreeRTOS side).

Workaround: Use the remoteproc method to boot the M4 core.

Description: BL_ON GPIO control is currently missing.

Description: Even if a USB controller is in peripheral mode, loading the USB Gadget schema fails with "Failed to start Load default USB gadget schema g1.schema.".

Workaround: Remove the command (ExecStartPost) copying the serial-number to the USB Gadget configuration in /etc/systemd/system/multi-user.target.wants/usbg.service.

Description: Our latest kernel is missing RS485 handling e.g. to use the RTS (CTS) output to control a RS485 transmitter.

Workaround: You may find the following commit from our older Linux kernel 3.10.17 as deployed in our embedded Linux BSP V2.4 Beta 1 (May 18, 2015) useful: http://git.toradex.com/cgit/linux-toradex.git/commit?h=toradex_imx_3.10.17_1.0.0_ga&id=82cf64948ddab0360fab876ee321b6191ed7258a

Description: Automatic USB Device/Host Detection will allow to use the USB port as either Device or Host (OTG). Note: The current default on the USB client port (USBC, OTG) is to be USB host. The reason for this default is that the Colibri iMX7S modules only provide this USB port, and USB host is typically used more often than client.

Workaround: If USB device is preferred as default set the device tree "dr_mode" property of the "usbotg1" node to "peripheral".

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: A bug in our GPIO Config Tool prevents the Apalis iMX6Q MXM Pin 130 to be accessible.

Description: The use of fdt_fixup should be unified across all our modules and document.

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: This release is identical to the previous V2.6 Beta 2 release and has passed full validation and verification for Apalis T30, Apalis iMX6, Colibri T30 and Colibri iMX6.

Description: Support the Multi-Touch Controller used on the Toradex Capacitve Multi-Touch Displays.

Description: Upgrade the Linux kernel and U-Boot to NXP's latest official i.MX 7 L4.1.0_1.1.0_GA BSP.

Description: On the BSB V2.6 Beta1 an OV5640 MIPI Camera does no longer work out of the box. This is caused by a driver having its compatible string changed.

Workaround: Correct the compatible string in the device tree.

Description: On the Colibri iMX6DL the RAM configuration is not patched correctly causing only 256MB aka half of the RAM being available.

Workaround: A fix is already available on the 2015.04-toradex-next U-Boot branch.

Description: The Colibri iMX7 Solo does only have one USB port. However the bootloader code of the Alpha1 release touches registers of the not available second USB port which leads to a freeze of U-Boot.

Workaround: None.

Description: The move to the 3.14 kernel dropped the possibility to configure the LVDS timings and resolution from the kernel command line and forced the use of the device tree. This provides that feature again.

Description: Vybrid's display controller (DCU) has more capabilities then currently being supported by the frame buffer driver. Implement a Linux DRM driver to support all the features of the DCU and leverage the advanced interfaces provided by the Kernel (KMS/DRI).

Workaround: Use the DCU frame buffer driver to provide display output.

Description: Audio settings do not get restored after suspend-to-RAM (LPSTOP2).

Workaround: Use standby (STOP) mode instead for now.

Description: UART Mark parity bit mode always generates a space parity bit (a 0 instead of a 1).

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

Description: While on the Apalis Evaluation board the PCIe switch as well as plugged-in (mini-)PCIe cards usually get detected actual operation may fail.
On Ixora PCIe may fail due to a device reset/initialisation timing issue.

Description: UART receiver path can overflow in certain conditions when using DMA mode. This leads to the receive path being stuck and not receiving any character anymore.

Workaround: Disable DMA mode by overwriting the dma-names property in the device tree.

Description: This version is identical to the previous beta version V2.5 beta 3.

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: The PMIC RTC does not meet the expected accuracy.

Workaround: If possible use the external RTC provided by the carrier board.