Release Notes

This document highlights the key features and support included in the BSP-Yocto-AM64x-PD23.1.0 software release for the phyCORE-AM64x SOM and development kit.

Board Support Package Status

BSP Operating system

Linux

Release Status

RELEASED

Release Date

2023-04-21

Repository

PHYTEC Public Repos

Binaries

BSP-Yocto-AM64x-PD23.1.0

New in this Release

Yocto

  • Switched to PHYTEC Yogurt Reference Linux Distribution and phytec-headless-image

Linux Kernel

  • New device tree overlay for co-processors (k3-am64-phyboard-electra-rpmsg.dtbo)

U-Boot Bootloader

  • Storage device for the boot environment gets determined by the boot device used

    • For SDMMC and EMMC, environment is stored in the boot partition (CONFIG_ENV_IS_IN_FAT=y)

    • For SPI NOR Flash, environment is stored at a fixed offset

  • Automatic SOM variant detection (implemented but not active)

  • New DDR settings with extended temperature range + lower refresh interval

  • Switched kernel command line to look for fixed devices instead of partition UUIDs

    • Booting from EMMC mounts rootfs via /dev/mmcblk0

    • Booting from SDMMC mounts rootfs via /dev/mmcblk1

  • OSPI NOR flash boot

Software Versioning

The BSP-Yocto-AM64x-PD23.1.0 software release is mostly based off of TI’s v08.06.00.002 Processor SDK Linux release and shares much of the same components and features.

Software Versioning

Tested Build Environment

Ubuntu 20.04

Ubuntu 20.04 Release Downloads

Linux Kernel

v5.10.158 (tag: v5.10.158-phy2)

PHYTEC Linux kernel repository

U-Boot Bootloader

v2021.01 (tag: v2021.01_08.06.00.002-phy3)

PHYTEC U-Boot bootloader repository

Yocto

3.1.23 Dunfell (tag: BSP-Yocto-AM64x-PD23.1.0)

PHYTEC Meta Layer repository

PHYTEC Meta Layer

This BSP release supports the phyCORE-AM64x development kit and will eventually support configuration options for more SOM variants to be used with the development kit carrier board (PBA-C-25). Here is a summary of the Yocto Machine Configuration support introduced in the PHYTEC Meta Layer for this release:

Yocto MACHINE Summary

Yocto MACHINE

Default Target Image

Linux Distro

Kit Part Number

Compatible Modules

U-Boot defconfig

Linux defconfig

Device Tree Files

phyboard-electra-am64xx-1
(Default Kit)

phytec-headless-image

PHYTEC Yogurt Reference Distribution

KPB-07225-001.A0

SOM:
PCM-072.A1
(PCM-072.S1 equivalent to PCM-072.A1)
Carrier Board:
PBA-C-25.A1

u-boot.img:
phycore_am64x_a53_defconfig
SPL:
phycore_am64x_r5_defconfig

phytec_ti_defconfig
phytec_ti_platform.config

Default Device Tree:
k3-am642-phyboard-electra-rdk.dtb
Overlay:
k3-am64-phyboard-electra-rdk-pcie-usb2.dtbo
k3-am64-phyboard-electra-x27-uart3-spi1.dtbo
k3-am64-phyboard-electra-rpmsg.dtbo

Note

There is no difference between “electra” and “electra-rdk” in the device tree files.

Part Number Summary

Hardware Summary

Hardware Description

Part Number

Configuration Details (DDR4 / eMMC / NOR / Ethernet PHY / Temperature)

PCB Version

phyCORE-AM64x SOM

PCM-072.A1 (PCM-072.S1 equivalent to PCM-072.A1)

2GB / 16GB eMMC / OSPI / Yes / Industrial

1565.1

phyCORE-AM64x Carrier Board

PBA-C-25.A1

1566.1

phyBOARD-Electra Development Kit

KPB-07225-001.A0

PCM-072.A1 + PBA-C-25.A1

Linux Device Tree Summary

This is a summary of how the device tree source files (.dts) and the various include files (.dtsi) are broken down in the kernel. These files describe the hardware in a hierarchical and modular way to the kernel, connecting device drivers to the interfaces brought out by the carrier board.

Linux Device Tree Summary

Hardware Target

Device Tree File Descriptions

Filename

KPB-07225-001.A0 (Default Kit)

Default Device Tree (includes the SOM .dtsi file below)

k3-am642-phyboard-electra-rdk.dts

SOM .dtsi- This file adds support for your specific SOM’s population options

k3-am64-phycore-som.dtsi

PCIe overlay

k3-am64-phyboard-electra-rdk-pcie-usb2.dts

SPI1 and UART3 overlay

k3-am64-phyboard-electra-x27-uart3-spi1.dts

RPMSG overlay

k3-am64-phyboard-electra-rpmsg.dts

Note

There is no difference between “electra” and “electra-rdk” in the device tree files.

Supported Interfaces

The following table outlines the validated interfaces of the default phyCORE-AM64x development kit.

Note

This table only outlines the key features of the AM64x Processor PHYTEC has chosen to enable by default for the phyCORE-AM64x Development Kit, which serves as a basis for customization in production designs. Unnecessary interfaces can be disabled and additional interfaces can be enabled when deploying the SOM on a custom carrier board. Other features of the AM64x Processor may or may not be configurable depending on pin multiplexing conflicts, for more information review the phyCORE-AM64x schematic in tandem with the Processor Datasheet.

Supported Interfaces

Interface

Detail

Implemented

Tested

Status in Device tree

Notes

UART

uart0

Yes

Yes

Okay

Default serial console
- Connected to CP2105 header

uart1

Yes

No

Reserved

Reserved for co-processor firmware usage

mcu_uart0

Yes

Yes

Disabled

I2C

i2c0

Yes

Yes

Okay

i2c1

Yes

Yes

Okay

mcu_i2c0

Yes

Yes

Disabled

mcu_i2c1

Yes

Yes

Disabled

Ethernet

eth0 (cpsw ethernet)

Yes

Yes

Okay

DP83867IRRGZ SOM PHY

eth1 (pru-icssg0 ethernet)

Yes

Yes

Okay

DP83867IRRGZ CB PHY

eth2 (pru-icssg0 ethernet)

Yes

Yes

Okay

DP83867IRRGZ CB PHY

eMMC/SD/SDIO

mmc0

Yes

Yes

Okay

eMMC Flash Memory on the SOM

mmc1

Yes

Yes

Okay

SD Card Slot on Dev Kit Carrier Board

USB

usb0

Yes

Yes

Okay

Connected to USB 3.0 HUB
- USB super speed signals (serdes0) muxed between USB HUB and mPCIe with device tree overlay
- USB2.0 speeds still supported when mPCIe enabled

CAN

can0

Yes

Yes

Okay

Full Duplex CAN brought out to X2 10pin header

can1

Yes

Yes

Okay

Full Duplex CAN brought out to X3 10pin header

SPI

spi0

Yes

Yes

Okay

Connected to Infineon Trusted Platform Module (TPM) SLB9670

OSPI

ospi0

Yes

Yes

Okay

NOR Serial Flash on SOM

GPIO

User LEDs

Yes

Yes

Okay

User LEDs populated on SOM and Carrier Board

User Buttons

Yes

No

No

General Purpose Input/Output

No

No

No

GPIOs can be configured “on the fly”, See GPIO Peripheral Interface Guide

Memory

SOM EEPROM

Yes

Yes

Okay

M24C32 on i2c0

Carrier Board EEPROM

Yes

Yes

Okay

M24C02 on i2c1

OSPI NOR Flash

Yes

Yes

Okay

MT35XU512ABA

RTC

SOM RTC

Yes

Yes

Okay

RV-3028-C7 on I2C0

mPCIe

serdes0

Yes

Yes

Disabled

mPCIe at the X31 connector
- Enabled with device tree overlay
- serdes0 signals muxed between USB HUB and mPCIe

PRU-ICSSG

pru_icssg0

Yes

Yes

Okay

Connected to eth1 and eth2

pru_icssg1

Yes

Yes

No

Supported with Pinger Lite Expansion Board

Known Issues

  • The reboot command delays the reboot process by several seconds in 3% of all boots

  • USB devices connected to the USB bus on the PCIe connector might not be detected during boot, or can fail during operation in some cases.

    • The PCIe card with an I210 Network Adapter was not detected in 5% of all boots.

Note

For technical support, please visit PHYTEC’s Support Portal!