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Buildroot 2.2 Release Notes

v2.2.7 release note​

Release date: 2025-8-13

Compared to 2.2.6, 2.2.7 fixes several issues and provides a new kernel branch k1-bl-v2.2.y (based on 6.6.63), including every modification.

Major Updates​

  • Added support for AMD graphics cards
  • Added support for sound card playback-only configuration
  • Added support IME extensions for use by user programs
  • Fixed the issue of abnormal use of mutex_unlock in rtl8852bs

Build updates​

  • Build dependencies have been packaged into a container. Builds run in the container by default. To build on the host, set the environment variable export DIRECT_BUILD=1. (Note: when switching between container and host builds you must clean the output directory.)
  • Added a set of commands to ease developing multiple solutions simultaneously; run make help for details.

v2.2.6 release note​

Release date: 2025-7-17

Compared to 2.2.4, 2.2.6 fixes several issues and provides a new kernel branch k1-bl-v2.2.y (based on 6.6.63), including every modification.

Major Updates​

  • Added support for small memory solution
  • Added support for spi nand boot solution
  • Added support for the MUSE-Pi-Pro board-level LED mode as heartbeat mode
  • Added support for remoteproc VIRTIO_F_ACCESS_PLATFORM functionality
  • Fixed the issue of display freezing during hibernation wake-up aging
  • Fixed the maximum execution jitter delay of emac
  • Fixed the i2s system clock divider parameters to reduce sysclk jitter
  • Fixed the issue where multiple sensors of the camera could not be powered on simultaneously
  • Fixed the issue where some husb239 adapters were unable to negotiate 12V
  • Fixed the warning of uninitialized lock in rtl8852bs rg_interface and the oops issue during stanby test

v2.2.4 release note​

Release date: 2025-6-25

Compared to 2.2.2, 2.2.4 fixes several issues and provides a new kernel branch k1-bl-v2.2.y (based on 6.6.63), including every modification.

Major Updates​

  • Added support for MMC to adjust tx delaycode according to cpufreq to improve data transmission stability
  • Added support for WOL wake-up function of the RTL8211F network interface card
  • Added support for es8316/es8375 codec
  • Added support for i2s dsp_a/b format
  • Added support for MOTORCOMM PHY driver
  • Fixed the issue that the rapid change of UART CTS state fails to generate an interrupt
  • Fixed the retransmission issue caused by the probabilistic failure of i2c transmission
  • Fixed the system panic issue caused by global out-of-bounds / slab out-of-bounds memory access in rtl8852bs
  • Fixed the configuration length of GPU IO space
  • Fixed the issue of random MAC addresses in some scenarios

v2.2.2 release note​

Release date: 2025-5-23

Compared to 2.1.1, 2.2.2 fixes several issues and provides a new kernel branch k1-bl-v2.2.y (based on 6.6.63), including every modification.

Major Updates​

  • Fixed the issue of the remote login interface crashes during remote access

v2.2.1 release note​

Release date: 2025-5-15

Compared to 2.2, 2.2.1 fixes several issues and provides a new kernel branch k1-bl-v2.2.y (based on 6.6.63), including every modification.

Major Updates​

  • Added support for Realtek network phy status detection function
  • Added support for drm yuv444 format
  • Added support for standard v4l2 via shared dmabuf
  • Added support for spi high frequency clock phase calibration
  • Fixed the out-of-bounds issue caused by v2d dmabuf memory exceeding 4GB
  • Fixed the issue that the baud rate setting fails in some scenarios of UART
  • Fixed the issue of chromium crashing on the bianbu cloud platform
  • Fixed the issue that rtl8852bs wifi iperf scenario runs away
  • Fixed the abnormal data transmission problem during the aic8800 wifi firmware download process

v2.2 release note​

Release date: 2025-4-23

Compared to 2.1, 2.2 fixes several issues and provides a new kernel branch k1-bl-v2.2.y (based on 6.6.63), including every modification.

Major Updates​

  • Added support for printing esos version function
  • Added support for HIDRAW function
  • Fixed the issue of hub initialization timing errors when usb asynchronous stanby
  • Fixed the issue of occasional errors in USB flash
  • Fixed the issue of spi0/spi1 dma transfer erros

v2.2rc4 release note​

Release date: 2025-4-11

Compared to 2.1, 2.2 fixes several issues and provides a new kernel branch k1-bl-v2.2.y (based on 6.6.63), including every modification.

Major Updates​

  • Added support for GPU DVFS
  • Added support for RTL8125 and RTL8168 modules
  • Added support for USB network sharing device function
  • Added support for configure ddr priority on USB2.0
  • Fixed the issue of dtb data exception
  • Fixed the issue of uart driver drop frame
  • Fixed low-probability display issues in system reboot scenarios
  • Fixed display errors caused by frequent HDMI hot-swapping in some scenarios
  • Fixed low-probability EMAC errors and the last CPU could not enter suspend during suspend/resume
  • Fixed compatibility issues during sdio clock switching