Known Issues
Reported issues with workaround, fixes, and schedule
This page describes the known issues on the phyCORE-AM65x Alpha kits.
Processor Silicon Revision Errata
Silicon Rev 1.0 - Pre-production
The phyCORE-AM65x Alpha kits are using TI's Silicon Revision 1.0. Below is a list of errata from TI, which will be addressed in a future silicon revision. This version is considered pre-production and is recommended for evaluation purposes only.
phyCORE-AM65x Development Kit
Open Hardware and Software Issues
| ID | Interface | Affected HW Version | Affected SW Version | Details | Workaround/ Planned Fix |
|---|---|---|---|---|---|
AM65SW-75 | Mikrobus | Carrier Board PL1499.2 and PL1499.3 | BSP-Yocto-TISDK-AM65xx-ALPHA1 and ALPHA2 and ALPHA3 | Support is not currently planned for this interface, and may be removed from the development kit in the future. | TBD |
PCM067-233 | Temperature/Power Consumption | SOM PL1498.1 | BSP-Yocto-TISDK-AM65xx-ALPHA1 and ALPHA2 and ALPHA3 | The phyCORE-AM65x Alpha kit includes a heatsink and fan due to the AM654x SOC's power dissipation. We strongly encourage the use of this heatsink and fan for Silicon Revision 1.0. Investigation is under way to improve power consumption and changes are expected in TI's next silicon revision. | TBD |
PCM067-412 | eMMC | SOM PL1498.1 | BSP-Yocto-TISDK-AM65xx-ALPHA1 and ALPHA2 and ALPHA3 | Booting from eMMC is inconsistent on some phyCORE-AM65x SOMs. | Expecting behavior to be improved in next silicon revision Workaround: Disconnect and reconnect the power, or press the cold reset button (S1), to make another attempt. |
AM65SW-131 | Kernel Panic after 'poweroff' command in Linux | N/A | BSP-Yocto-TISDK-AM65xx-ALPHA1 and ALPHA2 and ALPHA3 | Kernel panic occurs after executing 'poweroff' command. Same behavior is observed on TI's EVM. | Workaround: Disconnect power after executing 'poweroff' command. |
PCM941-115 PCM067-239 | Warm Reset | SOM PL1498.1 Carrier Board PL1499.2 and PL1499.3 | BSP-Yocto-TISDK-AM65xx-ALPHA1 and ALPHA2 and ALPHA3 | Pressing the physical warm reset button (S2) on the Alpha kit results in a system hang and the board does not properly reset. Same behavior is observed on TI's EVM. | Hardware revision needed to both SOM and Carrier Board. Workaround: Disconnect and reconnect power or press the cold reset button (S1). |
AM65SW-137 | Hang after 'reboot' when booting from eMMC | TBD | BSP-Yocto-TISDK-AM65xx-ALPHA1 and ALPHA2 and ALPHA3 | Executing the 'reboot' command when booting from eMMC, results in a hang. Same behavior is observed on TI's EVM. | TBD Disconnect and reconnect power or press the cold reset button (S1). |
SDROIDLINTI-26 | Bluetooth | TBD | BSP-Android-TISDK-AM65xx-ALPHA1 | Bluetooth is supported in Linux kernel but not in Android. | SW changes planned: Software support for Bluetooth will be added to Android. |
SDROIDAM65-28 | Display backlight | TBD | BSP-Android-TISDK-AM65xx-ALPHA1 | Android GUI backlight settings do not affect display backlight level | |
PCM941-180 | Camera | Carrier Board PL1499.3 | N/A | There is a design issue with the camera selection circuit on this revision of the carrier board, so the voltage of the camera will not be automatically detected and configured. | Issue will be resolved in the next CB revision. Workaround: The default configuration is set to work with a 3.3V camera (this is the voltage level of the phyCAM-M). It is possible to use a 5V camera with some hardware configuration reworks/changes. Please email customer support for assistance. |
SLINTIDEV-22 | Camera | N/A | BSP-Yocto-TISDK-AM65xx-ALPHA1 and ALPHA2 and ALPHA3 | The phyCAM-M camera is not supported yet in software | |
AM65SW-285 | MMC/SD | N/A | BSP-Yocto-TISDK-AM65xx-ALPHA1 and ALPHA2 and ALPHA3 BSP-Android-TISDK-AM65xx-ALPHA1 | Leaving the MMC/SD slot on the carrier board unpopulated can cause issues booting from eMMC and utilizing Wi-Fi | Workaround: Leave an SD card adapter inserted in the MMC/SD slot (with or without microSD inserted into adapter) when booting from eMMC |
Open Software Issues from TI
Texas Instruments Known Issues (U-Boot)
Texas Instruments Known Issues (Linux Kernel)
Resolved Hardware and Software Issues
| ID | Interface | Details | Fix |
|---|---|---|---|
AM65SW-127 | PRU-ICSS-G Ethernet (ETH1 and ETH2) | The ETH1/ETH2 ports are unstable. Kernel panics and crashes are observed in various instances and it is not recommended to use these ports at this time. Please refer to below E2E posts for additional information: https://e2e.ti.com/support/processors/f/791/p/787878/2942162 | Resolved in ALPHA2 |
AM65SW-152 | Display touch | Touchscreen not enabled by default in ALPHA1 release. | Resolved in ALPHA2 |
AM65SW-138 | eMMC | Booting from eMMC is inconsistent, due to a U-Boot driver issue, and booting halts after displaying some console output. | Resolved in ALPHA2 |
PCM941-98 | Camera (CSI) | The MIPI Camera interface is currently not supported. The pinout of the X22 camera connector is reversed from the pinout order of the phyCAM-M MIPI Camera cable. | Resolved in PL1499.3 |
PCM941-114 | PCIe | Some PCIe cards may prevent the phyCORE-AM65x Alpha Kit from booting up when connected. The capacitive load introduced by PCIe cards may cause the 3.3V rail to droop during power-up. This causes a voltage supervisor on the SOM to trigger a reset and prevent the system from booting up. This behavior varies depending on the load of the connected PCIe card. | Resolved in PL1499.3 |
PCM941-99 | PRU Ethernet ETH1/ETH2 | The hardware does not support Industrial Ethernet protocols that require MII mode, such as EtherCAT. | Resolved in PL1499.3 |