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*************************************************
Release Notes: Linux Image V2.x for Colibri iMX7
*************************************************
Contents:
- U-Boot 2015.04 boot loader
- Linux 3.14.52 kernel, based on Freescale's BSP release imx_3.14.52_1.1.0_ga
- Angstrom 2015.12/OpenEmbedded jethro/Yocto 2.0 based root file system, using
LXDE desktop environment
==> Flashing instructions can be found on the Toradex developer article:
http://developer.toradex.com/knowledge-base/flashing-linux-on-imx7-modules
Licensing:
- proprietary multimedia codecs included for evaluation purpose only
- customer required to obtain proper re-distribution license
********************************************************************************
Linux Image V2.6 Alpha 1 (March 15, 2016)
- U-Boot:
- initial release
- Linux kernel:
- initial release
- rootfs / oe-core:
- initial release
- uses ARMv7 hard-float Thumb2 builds (armv7at2hf-vfp-neon)
- sources git.toradex.com tag Colibri_iMX7_LinuxImageV2.6Alpha1_20160315
- repository linux-toradex branch toradex_imx_3.14.52_1.1.0_ga
- repository u-boot-toradex branch 2015.04-toradex
Known Issues:
- poweroff and reboot does not work as expected
- display resolution can be set in the device tree
- flashing the ubifs rootfs with U-Boot may fail depending on HW
- FreeRTOS firmwares for Cortex-M4 core cause Linux to freeze during boot-up
(resolved in latest kernel version toradex_imx_3.14.52_1.1.0_ga-next branch)
********************************************************************************
Notes:
- 115200 baud serial debug console on UARTA aka FFUART (lower X25 on EvalBoards
resp. X27 on V3.1a depending on JP17/19, X13 on Iris) without any handshake
- user account: root with empty password
- UBIFS flash root file system
- opkg package manager
- Linux host used for update preparation requires proper 32-bit execution
environment (e.g. install ia32-libs on 64-bit Ubuntu) and awk (e.g. install
gawk on Ubuntu)
Working on latest image:
- U-Boot boot loader
- environment storage in NAND flash
- Ethernet
- MMC/SD cards
- NAND flash
- RAM size auto detection
- serial console debug UARTA
- Toradex Colibri configuration block handling
- module type auto detection
- USB storage as host on USBH port (i.MX7 Dual only)
- USB storage as host on USBC port
- framebuffer support
- Linux kernel
- analogue audio playback and capture, resistive touch
- analogue input via IIO framework
/sys/bus/iio/devices/iio:device0
Note the 1.8 volt full scale limitation!
- DVFS power management (i.MX 7Dual only)
- Ethernet eth0
- custom Ethernet MAC address
- framebuffer console
- GPIOlib /sys/class/gpio
- I2C via /dev/i2c-X
- NAND flash MTD/UBI/UBIFS with hardware ECC
- PWMs /sys/class/pwm
- RTC (i.MX 7 internal and board level I2C RTC)
- 4-bit MMC/SD card ESDHC2
- SPI (ECSPI) via /dev/spidev2.0
- suspend LP1
- CPU temperature sensor via hwmon /sys/class/hwmon/hwmon0/temp1_input
- serial console debug UARTA ttymxc0
- serial UARTA/UARTB and UARTC, including RTS/CTS, ttymxc0/1/2
- USB host port (Note, i.MX 7Solo only on USBC port)
- USB audio driver
- Linux user-space
- graphics (LCDIF aka parallel RGB)
- Firefox browser
- LXDE desktop environment
- Display:
- backlight PWM with PWM<A>
- resolution setting via device tree nodes
Not working or not tested:
- U-Boot boot loader
- USB keyboard
- USB device firmware upgrade (DFU) as device on USB OTG port
- Linux kernel
- CAN via MCP2515
- optional CAN via flexcan can0 and can1, disabled in device tree
- IrDA
- parallel bus
- optional parallel camera interface
- RS-422/485
- serial number and board revision (not currently handed over by U-Boot)
- module temperature sensor
- USB webcam
- USB raw HID device /dev/hidrawX
- USB device, ACM, Ethernet CDC, RNDIS
- automatic USB device/host detection aka OTG support
- watchdog
- Linux user-space
- GPIO config tool not available
******************************************************************************
Toradex, June 7, 2016
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