Welcome to Linux4SAM

Welcome to the main starting point for Linux OS on SAM products. Its aim is to centralize information about Linux kernel and open source projects on Microchip AT91 Smart ARM-based Microprocessors (aka SAM).

Our goal is to be an interface with open source projects that include AT91 support. We do not want to duplicate information but to link as much as possible to good resources available on the Web.

Keep an eye on this website as it has been designed for instant update. We will try to make it live with the open source community and update AT91 information in those pages. To keep yourself informed, add WebRss or WebAtom feeds in your usual news reader.

Questions, feedback, patches and enhancement are the way open source communities live. Go to LinksToCommunities page for a natural way to interact with material presented on this website.

  Linux4SAM 6.0 demo directory  

• Linux kernel 4.14.x (+ LTS maintenance updates up to v4.14.73)
• AT91Bootstrap 3.8.11 with new support for DMA load from SD-Card/eMMC and 8-bit bus eMMC detect & support
• U-Boot 2018.07 with PDA screen detection at boot time, FIT image support and overlay support. Check our FAQ for any questions
• Yocto Project 2.5.1 (Sumo)
• Buildroot generated from 2018.02 revision using buildroot external
• OpenWrt Linux operating system based on master branch of the reunified LEDE / OpenWrt project: 18.06
• Device tree overlays and FIT Image support

New kernel features:

• use of Device Tree overlays for board variants and auto-identification of PDA screens when hardware permits
• handling for all low power modes ULP0/ULP1/Backup Self Refresh on SoC that support them
• add support for PDA 5" screen TM5000/AC320005-5
• add driver for the new Atmel I2S controller
• ADC: add resistive touchscreen support to SAMA5D2
• QSPI: add Global Block Unlock support and SFDP tables to support SST26 QSPI flash memories
• USB host: add the HSIC port support
• USART: add ISO7816 support to serial driver
• USART: add support for SPI mode in USART driver: spi-at91-usart
• fix to sama5d2 shutdown controller
• fix drive strength for NAND data pins on SAMA5D2-PTC-EK
• fix Ethernet macb TX stuck under certain conditions (net: macb: restart tx after tx used bit read)
• fix cts(cbc(aes)) and rfc4543(gcm(aes))) crypto modes

New Yocto Project/Buildroot features:

• new whiteboard Qt application with improved performance
• new wildwest Qt demo showing parallax effects with libplanes
• new Qt application interactively demonstrating software vs hardware scene objects
• new spacetouch application showing using all planes with a parallax effect
• new defconfigs for node-red out-of-the-box working setup (only on buildroot)
• new vision demo demonstrating machine vision with OpenCV (only on buildroot)
• Qt Creator support

Libplanes with support for YUV plane formats (support video formats)

MPIO additions:

• Add support for at91sam9x5
• Add support to change board/cpu through environment variables
• Add loopback test for SPI

iocontrol - add splash screen and startup time optimizations.

Demo Image for all boards. Choose with or without screen option, your root filesystem flavor, flash and you're ready to go:

• Demo images for SAMA5D27 SOM1 EK
• Demo images for SAMA5D2 PTC EK
• Demo images for SAMA5D2 Xplained
• Demo images for SAMA5D3 Xplained
• Demo images for SAMA5D4 Xplained
• Demo images for AT91SAM9x5-EK
• NAND and SPI + eMMC media types were flashed using SAM-BA 3.2.3

Yocto Project SDK based on Linux4SAM 6.0 release (Yocto Project 2.5.1 "Sumo")

And all goodies of previous Linux4SAM revisions!

  Linux4SAM 5.8 demo directory

• Linux kernel 4.9.x (+ LTS maintenance updates up to v4.9.87)
• AT91Bootstrap 3.8.10
• U-Boot 2017.03 with Device Model / Device Tree support
• Yocto Project 2.4.2 (Rocko)
• Buildroot generated from latest 2018.02 revision with the new buildroot external
• OpenWrt filesystem solution based on master branch of the reunified LEDE / OpenWrt project
• Support for new SAMA5D2 PTC EK and dedicated page: Sama5d2PtcEKMainPage
• Support for the Peripheral Touch Controller (PTC), able to provide a Capacitive Touch interface. Linux driver uses it as an input device
• Use of QT LinuxFB with DRM/KMS backend without the need of wayland/weston nor OpenGLES (Mesa 3D)
• Libplanes graphical library for taking advantage of the LCD hardware overlays (2D Hardware operations)
• Availability of the new Microchip Peripheral I/O Python Package: mpio
• And all the goodies of previous Linux4SAM revisions!

Demo Image for all boards. Choose your screen option, your root filesystem flavor, flash and you're ready to go: Demo Archive 5.8 page

Yocto Project SDK based on Linux4SAM 5.8 release (Yocto Project 2.4.2 "Rocko")

  Yocto Project SDK

• install the SDK
• compile your project
• run on the board running the latest demo Linux4SAM 5.7

  Linux4SAM 5.7 demo directory

• Linux kernel 4.9.x (+ LTS maintenance updates up to v4.9.52)
• AT91Bootstrap 3.8.9
• U-Boot 2017.03 with Device Model / Device Tree support
• Yocto Project 2.2.2 (Morty)
• Buildroot generated from latest 2017.08 revision
• Support for new SAMA5D27 SOM1 EK and dedicated page: Sama5d27Som1EKMainPage
• Use of the new SAM-BA 3 for all supported boards with QT QML flashing scripts
• Support for low power Backup+Self-Refresh mode for SAMA5D2 and the SAMA5D2 Xplained board
• Hardware Video decoder on SAMA5D4 with H264, Webm/VP8, MPGE4 ASP and H263 video streams supported
• And all the goodies of previous Linux4SAM revisions!

Demo Image for all boards. Choose your screen option, your root filesystem flavor, flash and you're ready to go: Demo Archive 5.7 page

  Using the Image Sensor Controller (ISC)

  Pulse Width Modulation driver (PWM)

  Screens with SAMA5 Xplained boards

PDA Inc.

  SAMA5 Driver Model in U-Boot