BSP Layers and Reference Images for Yocto Project Issue Tracker

Description: Booting a FIT image that includes a RAM disk is not working. Boot fails with the following errors: `Error: ramdisk overwritten`, `Ramdisk image is corrupt or invalid`.

Workaround: Update `UBOOT_RD_LOADADDRESS` in OE machine conf file.

Description: Some monitor might not work (no display signal) or use a mode different from the preferred one using the HDMI interface, this is because video modes are filtered out if the monitor expected pixel clock is "too" far from the clock that the SOC is able to produce.

Description: The NAU8822 audio codec available on the Verdin development board cannot be configured in bridge-tied load

Description: The bootaux command is not enabled on the Verdin iMX8MM u-boot default configuration.

Workaround: If the bootaux command is needed, build a custom u-boot with CONFIG_IMX_BOOTAUX set.

Description: PREEMPT_RT was not enabled by default on RT Downstream images

Workaround: PREEMPT_RT config depends indirectly on !KVM, so make sure that KVM is not set

Description: Update NXP downstream multimedia and graphics packages to version LF5.15.52_2.1.0

Description: Update downstream U-Boot to version LF5.15.52_2.1.0

Description: tdx-info is a helper script meant to simplify getting information from Toradex's modules. It is helpful for customers that need to get information from their module e.g. during Toradex's support process. For more information, check https://github.com/toradex/tdx-info

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: Kernel does not includes `BPF/cgroup` as required by systemd (`unit configures an IP firewall, but the local system does not support BPF/cgroup firewalling.`)

Description: At boot the kernel prints the following error message: `of_reserved_mem_lookup() returned NULL`

Workaround: No issues because of this, the error log can just be ignored

Description: VPU and video playback do not work.

Description: Playing audio on a Dahlia Carrier Board using a Verdin iMX8MM causes distortion on the audio output.

Workaround: Use 48kHz sample rate or set `simple-audio-card,mclk-fs = <256>;` in sound_card dts node.

Description: Add support for booting M4

Description: Add USB RNDIS support in minimal reference image

Description: Branch BSP-6 downstream distribution overlay to `toradex_5.15-2.0.x-imx`

Description: Drop custom Linux Kernel splash screen support

Workaround: Use plymouth or another standard splash-screen solution

Description: Mount "boot" partition to the standard location and `mount --bind` from `/boot` to that location instead of mounting the "boot" partition in `/boot`

Description: Add Verdin iMX8M Mini to Linux Kernel toradex_5.15-2.0.x-imx branch

Description: Update ATF (TF-A) to lf_v2.6 version, as included in NXP 5.15-2.0 BSP.

Description: Move from edge interrupt to level interrupt to improve reliability

Description: Update on the U-Boot config block code: - use official SoM names on prints - interactive config block code creation ask for the PID4 number instead of y/n interactive questions

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

Description: Updated bluez-alsa package to version 4.0.

Description: Hot-plugging USB devices on the USB host port USB_2 does not work on a custom carrier board without a USB hub in-between. Note that current Toradex carrier boards (Dahlia and the Verdin Development Board) do have such a USB hub and therefore do NOT exhibit this issue as the USB hub itself is handling the hot-plugging. This issue is related to USB runtime power-management.

Workaround: Add `power-domains = <&usb_otg2_pd>;` property to `&usbphynop2` node in the device tree.

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: On the Dahlia carrier board the Headphone volume is set to a default value after resume from standby or if nothing is played for more than 5 seconds.

Workaround: Restore the volume to the desired level after resume.

Description: Playing audio on a Dahlia Carrier Board using a Verdin iMX8MM causes distortion on the audio output.

Workaround: Use 48kHz sample rate or set `simple-audio-card,mclk-fs = <256>;` in sound_card dts node.

Description: Hot-plugging USB devices on the USB host port USB_2 does not work on a custom carrier board without a USB hub in-between. Note that current Toradex carrier boards (Dahlia and the Verdin Development Board) do have such a USB hub and therefore do NOT exhibit this issue as the USB hub itself is handling the hot-plugging. This issue is related to USB runtime power-management.

Workaround: Add `power-domains = <&usb_otg2_pd>;` property to `&usbphynop2` node in the device tree.

Description: Add mii-tool to the image

Description: Print systemd boot messages to the uart, the default console output

Description: Update to NXP released L5.4.70_2.3.7 (U-Boot)

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

Description: Set analog audio output as default

Description: Add support for USB OTG

Description: Enable CONFIG_DYNAMIC_DEBUG Kernel Config

Description: The PCIe initialization on the Verdin IMX8MM doesn't respect the required PCIe PERST# start-up sequence, PERST# is de-asserted too early.

Description: Increase maximum loadable Kernel size to 64MB

Description: Spi CAN Controller is receiving wrong data when frames of different length are sent

Description: If the Verdin iMX8MM receives at 1Mbits/s with around 100% bus load CAN frames with a 1 byte payload, around 15..20% of frames are lost.

Workaround: Set `spi-max-frequency = <8500000>;` in the device tree in `can1: can@0` node or update to version 5.6.0 or later. After that packet loss at 1Mbit/s with 100% bus load and 1 byte DLC payload is about 4%.

Description: The Verdin iMX8M Mini may crash during boot with the default configuration if the DSI to HDMI display adapter is NOT plugged in.

Workaround: Remove DSI to HDMI adapter overlay in case you do not have the adapter present (see also `skip_fdt_overlays`)

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

Description: Do not store u-boot environment during boot unasked

Description: Suspend/Resume sometimes freezes when going to suspend. This happens about every 5 to 10 times when going to suspend.

Workaround: None

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: Drop support for the Verdin iMX8M Mini V1.0.

Workaround: Use BSP 5.1.0 (or the 5.2.0-devel-202102+build.7) for V1.0B modules.

Description: Support the Nuvoton NAU88C22YG audio codec found on the Verdin Development board V1.1A and later.

Description: An image for Apalis iMX8 contains in addition to the ones specific to Apalis iMX8 the specific ones for Apalis iM8X. While this does not hurt it might be confusing.

Workaround: -

Description: Change OpenEmbedded recipes from Toradex to fetch from https instead of git where possible.
In an approach to make it more user-friendly, especially for big company customers that do not allow git-protocol in their networks we decided to use https as a fetching source.
We are aware that we cannot do this for each and every layer but at least for ours we decided to switch from git to https.

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: We dropped support for fdt_fixup in favour of using device tree overlays.
https://developer.toradex.com/knowledge-base/device-tree-overlays-linux

Description: Use unified /dev/apalis-emmc symlinks for fw_env.config so we only need one config for all modules.

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: Drop ptest from DISTRO_FEATURES. This should reduce total packages that have to be built.

Description: Use eMMC Reset of the new Verdin iMX8M Mini V1.1A modules.

Description: Add support for new KSZ9131 PHY on V1.1 modules.

Description: Update developer website article about ADC.

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

Description: Update the developer website documentation about BSP device tree overlay support.

Description: NXP issued an urgent notice about an issue they found in the PMIC driver which may damage i.MX 8M Mini and Nano application processors.

Workaround: Update to a later BSP version which has this addressed. You are encouraged to switch to BSP 5 since BSP 4 has been deferred (https://www.toradex.com/blog/torizon-yocto-project-long-term-support-alignment).

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: With this ticket the OpenEmbedded image names changed: console-tdx-image --> tdx-reference-minimal-image verification-tdx-image --> tdx-reference-multimedia-image graphical-tdx-image got deleted and QT5 was added to tdx-reference-multimedia-image.

Description: Add support for Verdin DSI to LVDS Adapter.

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: Add support for the I2S audio interface.

Description: Support graphics acceleration on Verdin iMX8M Mini

Description: Add support for DVFS

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: Name Wi-Fi interfaces consistently.

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

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: 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 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: It's not possible to enable ADC continuous conversion mode following our documentation steps.

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: Upstream kernel suspend/resume functionality is not working

Workaround: Use downstream distribution

Description: VPU and video playback do not work.

Description: Specifying an xceiver-supply in the SPI CAN nodes in the device tree will prevent the mcp25xxfd driver to successfully probe. ``` [ 5.239748] mcp25xxfd spi2.0: Failed to switch to mode 2 in time [ 5.245858] mcp25xxfd spi2.0: Failed to switch into loopback mode [ 5.252022] mcp25xxfd spi2.0: Probe failed, err=110 [ 5.256975] mcp25xxfd: probe of spi2.0 failed with error -110 ```

Workaround: Do not use an xceiver-supply with the mcp25xxfd driver.

Description: Sometimes transmission using RS485 stops with a kernel trace `irq 37: nobody cared`.

Description: After an endpoint is started through configfs, if 0 is written to the configfs entry 'start', the controller stops but the epc_group->start value remains 1. A subsequent unlinking of the function from the controller would trigger a spurious WARN_ON_ONCE() in pci_epc_epf_unlink() despite right behavior.

Workaround: https://github.com/torvalds/linux/commit/f58d5f53c89479c12ad719c1960176442add5aaa

Description: The LEDs of the on-module PHYs are swapped in hardware. We will resolve this issue by swapping the LEDs on the affected Verdin Carrier-Boards.

Workaround: You can swap the LED behaviour using the Enhanced LED mode of the PHY. Make sure you also set bit15 in register 23 (0x17) to '1' on the PHY. Please refer to the KSZ9131 datasheet for more information on how to set the LEDs.

Description: It’s not possible to use low resolution HDMI displays (800x600) using the DSI to HDMI converter due to the low frequency pixel clock .

Workaround: By manipulating the timing settings it should be possible to increase the pixel clock and concurrently increase the blanking times and achieve a working display.

Description: Simultaneous use of Wi-Fi and Bluetooth interfaces can lead to crashes of the firmware and/or the Linux kernel driver of the SDIO Wi-Fi/BT solution.

Workaround: Unload (rmmod) the entire Wi-Fi and Bluetooth stack and reload (insmod) it again. Worst case an entire system reboot may be required. Note: NXP is still working on the concurrent Wi-Fi Bluetooth use case.

Description: Add support for Bluetooth audio

Description: DSI to RGB adapter not available yet. Support will be added when the display adapter is available.

Description: Add support for S/PDIF Audio.

Description: The Carrier Board EEPROM on I2C_1 bus is not working properly on the Yavia Carrier Board, because of that the following errors are printed every boot: ``` wait_for_sr_state: Arbitration lost sr=93 cr=80 state=2020 i2c_init_transfer: failed for chip 0x57 retry=0 i2c_idle_bus: failed to clear bus, sda=0 scl=0 i2c_init_transfer: give up i2c_regs=0x30a50000 get_tdx_eeprom: cannot find EEPROM by node ```

Workaround: EEPROM on I2C_1 bus is normally not required in U-Boot, no functionality is prevented by this issue and errors can be safely ignored.

Description: Lower power button debounce time from 500ms to 50ms, this mainly affects carrier board that has no pushbutton on/off controller (e.g. Toradex Yavia).

Workaround: Keep the power button pressed 1 more second.

Description: The reset polarity changed in the atmel_mxt_ts driver between Linux kernel 5.4 and 5.15 so we need to cater for that.

Description: CTRL_SLEEP_MOCI# Signal is driven 'high' both in running and suspend mode. According to Verdin specification it should be 'high' in running, 'low' in suspend.

Description: Add support for Verdin Display Adapter RGB