BSP-Yocto-Ampliphy-AM64x-PD25.2.1               2026-04-15
==========================================================

- Linux kernel v6.12.79-phy1
- U-Boot v2025.07-phy9
- Yocto 5.0.16 (Scarthgap)


Tested Yocto Machines:
----------------------

- phyboard-electra-am64xx-2
  * phytec-container-image/ampliphy
  * phytec-headless-image/ampliphy-rt
  * phytec-headless-bundle/ampliphy-rauc
- phyboard-electra-am64xx-3
  * phytec-headless-image/ampliphy
  * phytec-securiphy-bundle/securiphy
  * phytec-securiphy-image/securiphy


Build Environment:
------------------

- Ubuntu 22.04 64-bit


New in this Release
-------------------

**Yocto**
^^^^^^^^^

* **PRU Support**: Added PRU PRP firmware binaries and updated machine essentials for AM64x
* **partup**: Updated to v3.0.0 with SPI-NOR flash layout configs
* **eeprom-flashtool**: Updated to v3.4.0
* **Serial Names**: Serial interfaces now have predicable aliases in /dev/serial/by-label/ based on the device-tree node name. The behavior of /dev/ttyS devices has not been changed.

**Linux Kernel**
^^^^^^^^^^^^^^^^

* **Kernel Update**: Update to Linux v6.12.79 (tag: v6.12.79-phy1)

**U-Boot Bootloader**
^^^^^^^^^^^^^^^^^^^^^

* **Bootloader Update**: Update to U-Boot v2025.07 (tag: v2025.07-phy9)
* **DDR Timings**: Updated DDR timings to increase stability in higher temperature ranges
* **RAUC Bootmeth**: Merged upstream RAUC A/B bootmeth with memory handling fixes

**Issues Fixed**
^^^^^^^^^^^^^^^^


**Known Issues**
^^^^^^^^^^^^^^^^

* **Securiphy**: There was a regression in the chain of trust while booting. When switching to u-boot standard boot we added an unsigned boot script, which is a violation of the chain of trust. This only applies to the securiphy distro.
* **Linux RT Latency**: Real-time Linux can have worst-case latencies up to 600 microseconds under heavy memory load.
* **Flashcp Command Failures**: Occasional failures during verification in `flashcp`.