BSP Layers and Reference Images for Yocto Project Issue Tracker

Description: It's not possible to use the gpio-poweroff driver, as it's initialization fails with "gpio_poweroff_probe: pm_power_off function already registered" whenever the driver is configured on the device-tree.

Description: Update i.MX Linux downstream kernel to NXP L5.15-2.2.x-imx / kernel.org v5.15.129

Description: Update SCFW to v1.15.0 used in LF-5.15_2.2.x

Description: U-Boot might prints some warning at boot complaining about "not owned" resources, e.g.: ``` Disable clock-controller@585a0000 rsrc 411 not owned Disable clock-controller@59580000 rsrc 512 not owned Disable clock-controller@5a4d0000 rsrc 62 not owned Disable clock-controller@5ac90000 rsrc 102 not owned ``` These warnings are a result of the resource partition checking when a device/peripheral is used by the Cortex-A (e.g. enabled in the dts file), but according to the SOC HW partitioning it's not supposed to be owned by it.

Workaround: Verify if this peripherals are supposed to be available and owned by the Cortex-A cores, if the answer is negative there is no issue and no action to be taken. Some peripherals might just not be available on the specific SOC making the whole warning messages just bogus.

Description: SATA device is not always detected at boot

Description: Booting a kernel with an external initrd fails in U-Boot. ``` ERROR: Failed to allocate 0x4d000 bytes below 0x100000000. device tree - allocation error FDT creation failed! resetting ... ```

Workaround: Remove `initrd_high` variable from U-Boot environment, `setenv initrd_high` or set `CONFIG_LMB_MAX_REGIONS=16` in U-Boot configuration

Description: Playtime on analog audio is faster (2x), this happen around 15% of the time after a reboot.

Workaround: Set `assigned-clock-rates = <786432000>, <49152000>, <12288000>;` in DTS `spdif0` node.

Description: The wakealarm feature of RTC1 does not work when using the `sysfs` interface. Thus one can do a timebased wakeup from suspend from any source provided by the SoM.

Workaround: Use `rtcwake` tool.

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

Description: Update Downstream Kernel To LF5.15.52_2.1.0

Description: Some kconfig option required by some systemd functionality are missing in the kernel config, add those.

Description: Update System Control Firmware to 1.14.0. This can be built using "SCFW Porting Kit​ 1.14.0" from NXP and our board-files published on github.com/toradex/i.MX-System-Controller-Firmware

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

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: Update Linux Kernel to 5.15-2.0.x-imx version, as included in NXP 5.15-2.0 BSP.

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

Description: Use random MAC addresses from the private IEEE range instead of `00:14:2d:ff:ff:ff` and `00:14:2d:ff:ff:fe` for the USB RNDIS ethernet interface

Description: Use LZ4 kernel compression algorithm instead of LZO.

Description: Update udev rules creating standard Toradex symlinks to work with newer kernels (up to Linux Kernel 6.0).

Description: USB Host interface is not working in U-Boot.

Workaround: apalis-imx8: execute `gpio set 132` before `usb start`

Description: The custom fstab that's installed on our builds doesn't include the "defaults" option that gets substituted by "to" as part of the openembedded "read-only-rootfs" IMAGE_FEATURE. Because of this, setting the image feature doesn't achieve the desired result of having the rootfs mounted as read-only.

Workaround: Patch the file meta-toradex-demos/recipes-core/base-files/base-files/fstab and include the "defaults" option: - /dev/root / auto noatime 1 1 + /dev/root / auto defaults,noatime 1 1

Description: It is not possible to control the built-int Ixora V1.2 LEDs using the Apalis IMX8.

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: Update to NXP released L5.4.70_2.3.7 (SECO, user-space, imx-boot)

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

Description: On HDMI the resolution 4Kp60 does not work reliable.

Workaround: This is an errata of the i.MX8QM SoC. Please see ERR050183 in the i.MX8QM Errata: https://www.nxp.com/docs/en/errata/IMX8_1N94W.pdf

Description: Enable CONFIG_DYNAMIC_DEBUG Kernel Config

Description: Update SCFW to 1.7.5, imx-seco 3.8.4

Description: Ethernet is not working properly after suspend->resume

Description: Update mwifiex WiFi firmware to 2021-07-16

Description: Booting with `fdt_overlays=apalis-imx8_mezzanine_lvds_overlay.dtbo display-lt170410_overlay.dtbo` the backlight of the 10" LVDS display is off.

Workaround: # echo 0 > /sys/devices/platform/gpio-fan/hwmon/hwmon0/pwm1
# gpioset gpiochip1 22=1

Description: Sometimes after multiple reboots an Apalis iMX8 crashes when using the Ixora V1.2 device tree.

Workaround: Use eval-board device tree

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

Description: SATA is not working stable.

Workaround: None

Description: Add device tree for Apalis iMX8 on Ixora V1.2

Workaround: Use V1.1 of the Ixora device tree until the new one is created.

Description: Add the serial number to the hostname, so the BSP has the same cli prompt as TorizonCore.

Description: Update OE to use SECO v3.8.1 and SCFW v1.7.3 as released by NXP BSP L5.4.70_2.3.3 patch release.

Description: Bluetooth pairing works but connection is not working

Workaround: CONFIG_BT_RFCOMM=m CONFIG_BT_RFCOMM_TTY=y

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: USB switches its role-state from client to host, client works but host does not enumerate plugged in devices.

Workaround: None

Description: HDMI driver is sometimes crashing when booted.

Workaround: Do not use CONFIG_DRM_CDNS_HDMI_CEC

Description: Update all components of userspace according to the release notes of the new NXP L5.4.70-2.3.0 release.

Description: Update downstream U-Boot to new NXP L5.4.70-2.3.0 release.

Description: Add missing display device tree overlays.

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: Add support for VPU on 5.4-2.1.x kernel.

Description: NXP i.MX 8QXP/8QM-based modules the buildinfo shows some garbage instead of IMX-MKIMAGE version used.

Description: Sending Data to ttyLP2 leads to endless loop.

Description: Update developer website article about ADC.

Description: Create separate device trees for QuadPlus variants of Apalis iMX8.

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

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

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: Default VDD_EXT_RGMII to 3.3V.

Description: Add possibility to switch RGMII rail to 2.5V.

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

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: 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: 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: Add U-Boot boot count support.

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: The dsp is an optional silicon feature. Currently, some of the Apalis iMX8 (and maybe Colibri iMX8X) do not have the feature. The device-trees by default enable the DSP in the SoC dtsi. The current driver prints the following message if the DSP is missing, often followed by a kernel oops. | Failed power operation on resource 512 sc_err 3, power_on 1 Change the driver to first detect the existence of a DSP and react accordingly.

Description: Update graphics to the latest version from NXP

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: Add support for SDIO / SD Card

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: Support the USB WiFi products available in the Toradex webshop

Description: Add support for HDMI Audio

Description: Add support for the Toradex Capacitive Touch 10" LVDS display

Description: Add support for configuring GPIOs in the bootloader

Description: Add support for SPI

Description: Add support for CAN

Description: Add support for UART

Description: Add support for Resistive Touch 4-wire

Description: Add support for Analog Audio Headphone

Description: Add support to switch shared USB ports automatically from host to client mode and vice versa

Description: Add support for HDMI monitors

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

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

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: On the Colibri VF50, VF61, T20, T30 and Apalis T30 we will continue maintaining our long-term supported (LTS) BSP 2.8. We are providing updates when there are any HW changes on those platforms, and we will regularly provide critical bug fixes.

Workaround: BSP 2.8 Long Term Support

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: It's possible that starting BT scans fails with error "Failed to start discovery: org.bluez.Error.NotReady"

Workaround: Just retry the command.

Description: During the initial boot the kernel might print some error on hci interface, `Bluetooth: hci0: unexpected event for opcode 0x0000`.

Workaround: No known issues because of that, bluetooth is just working fine afterward, just ignore the message.

Description: LVDS Jeida-24 Mapping Is Not Working Correctly

Workaround: Set LDB_BIT_MAP_CH1_JEIDA / LDB_BIT_MAP_CH0_JEIDA in drivers/gpu/drm/imx/imx8qm-ldb.c

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: With some external hardware combinations, the user could experience significant boot delays that are connected to the systemd-udev-settle.service being selected as a dependency for the rngd.service startup. One example of a hardware that could present this behavior is 3G modems.

Workaround: Masking the systemd-udev-settle.service should be enough to get boot times back to normal. Keep an eye on failures to start up the rngd.service as it depends on devices to be present when initialized.

Description: When the usbotg1 device tree node is disabled by the user, the Apalis IMX8 freezes on boot.

Workaround: Add fsl,usbphy = <&usbphy1>; property to &usbh1 node in the device tree.

Description: After a suspend/resume cycle USB does not work correctly anymore.

Description: USB PHY tx calibration for TXCAL45 using devicetree (https://www.kernel.org/doc/Documentation/devicetree/bindings/phy/mxs-usb-phy.txt) is not correct on iMX8 SoC. For TXCAL45DP and TXCAL45DM the dts configured range is 30-55 Ohm, but the USB PHY TX range is 35-54 Ohm.

Workaround: Scale `fsl,tx-cal-45-dp-ohms` and `fsl,tx-cal-45-dn-ohms` to ensure you get the desired value in the USB PHY registers.

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: When trying to resume an apalis-imx8 with WAKE1_MICO# signal it does not wake up and the module freezes. It seems to crash on resume.

Description: On toradex_5.4-2.1.x-imx the DMA is not working on LPSPI

Workaround: none

Description: Apalis iMX8QM USBH2/USBH3 not functional in U-Boot

Workaround: Use USBO1 or USBH4 ports.

Description: Provide proper vidargs for mainline 5.4 in BSP 4.0.0

Description: Sync U-Boot DTS with the Linux mainline

Description: Add support for Bluetooth audio

Description: Currently, the display port is not supported. Contact our support for more information.

Description: Provide GPIO Tool

Workaround: Such tool will be part of the Torizon platform.

Description: Perform RAM optimization tasks and verify them in the temperature cabinet.

Description: Add support for splash-screen during boot-up

Description: Note: Apalis iMX8 V1.1A and later do have C silicon or later PMICs which do no longer exhibit this issue and have successfully been validated with various vendor's UHS-I cards to perform at reasonable 85MB/s.

Certain vendors higher-speed UHS-I SD cards may fail due to NXP PMIC Errata ER021: VSELECT incorrect set point. E.g. on SanDisk Ultra or Extreme cards the following may be observed:
[ 290.252408] mmc2: host does not support reading read-only switch, assuming write-enable
[ 290.420738] mmc2: Tuning failed, falling back to fixed sampling clock
[ 290.427228] mmc2: new ultra high speed SDR104 SDHC card at address aaaa
[ 290.434886] mmcblk2: mmc2:aaaa SC16G 14.8 GiB
[ 290.485876] mmc2: Tuning failed, falling back to fixed sampling clock
[ 290.492630] mmcblk2: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0xb00
[ 290.587997] mmcblk2: p1 p2
[ 291.053334] EXT4-fs (mmcblk2p2): mounted filesystem with ordered data mode. Opts: (null)
[ 291.095778] FAT-fs (mmcblk2p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.

Workaround: Disable UHS-I modes by adding the property no-1-8-v to the affected usdhcX node. - or - Try slower or other vendors SD cards. Eventually, this issue will get fixed in a later NXP PMIC die revision.

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

Description: The current revision of iMX8 has a hardware issue that leads to random crash a Linux kernel on PCIe probing.

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 modules with a SoC having an additional M4 core one might want to deploy firmware through our regular image build process. Add a hook to simplify that deploy process. Do this for our legacy update procedure and for the Toradex Easy Installer.

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

Description: Linux kernel will crash with `Kernel panic - not syncing: Asynchronous SError Interrupt` if HDMI and LVDS DT overlays are enabled at the same time.

Description: Enable HMP support on Apalis iMX8 with dedicated dtb overlay.

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: We updated our RAM timings according to the latest officially released NXP RPA spreadsheets.

Description: Passing Mac address from U-Boot to Linux kernel not working Properly for second PHY

Workaround: Add the aliases of both Ethernet Interfaces to the devicetree files as "ethernet0 = &fec1; ethernet1 = &fec2;"

Description: Add initial minimal support for the Toradex Apalis iMX8X module in U-Boot Upstream

Description: The new Ixora V1.2A version allows shutting down the two CAN transceivers when not used and allow saving a considerable amount of power.

Description: Suspend does not work with PCIe enabled

Workaround: Use "clk_ignore_unused" boot kernel option