Open Source Summit North America 2025: Full Schedule

June 23 - 25, 2025
Denver, Colorado
View More Details & Registration
Note: The schedule is subject to change.

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This schedule is automatically displayed in Mountain Daylight Time (UTC/GMT -6). To see the schedule in your preferred timezone, please select from the drop-down menu to the right, above "Filter by Date."

IMPORTANT NOTE: Timing of sessions and room locations are subject to change.

11:20am MDT

U-Boot's New Standard Boot and What's Next - Simon Glass, Canonical

Monday June 23, 2025 11:20am - 12:00pm MDT

Bluebird Ballroom 2A

U-Boot provides a fairly new feature called Standard Boot, which replaces the scripts and masses of environment variables previously used. Standard boot can boot your device automatically and quickly.

This session dives into how embedded devices boot, how Standard Boot works under the hood, the benefits of adopting Standard Boot and how to write your own bootmeth and bootdev drivers. By way of example, some existing drivers are covered, including UEFI, extlinux, Android and ChromeOS.

It also provides a general update on U-Boot and what the future might hold.

Speakers

Simon Glass

Fellow Software Engineer, Canonical

Simon Glass has worked in embedded systems for many years, at ARM, Bluewater Systems (which he founded) and Google. In ChromeOS, Simon is responsible for driving adoption of Open Source firmware components in the industry ecosystem. He is a primary contributor to U-Boot and custodian... Read More →

U Boot Standard Boot and What's Next pdf

Monday June 23, 2025 11:20am - 12:00pm MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Any
Session Slides Yes

1:30pm MDT

Heterogeneous Linux and RTOS Software Architecture for Low-Price RISC-V Cores - Jim Huang & Chi-Kuan Chiu, National Cheng Kung University

Monday June 23, 2025 1:30pm - 2:10pm MDT

Bluebird Ballroom 2A

SoCs are increasingly heterogeneous, featuring multiple processor clusters and special-purpose accelerators. As a result, Asymmetric Multiprocessing (AMP) systems must support different operating environments running concurrently on the same chip. This talk outlines the software architecture needed to develop applications for AMP setups, enabling operating systems to interact across diverse homogeneous and heterogeneous configurations. In this way, AMP applications can leverage the parallelism provided by these varied architectures.

Our prototyping efforts focus on low-cost RISC-V processor cores configured as AMP systems, running both the Linux kernel and RTOSes such as ThreadX. This setup includes an IPC layer that implements RPMSG communication between cores. Additionally, our proxy infrastructure highlights how a proxy on the master core can handle POSIX library calls from RTOS-based remote contexts.

Speakers

Jim Huang

Assistant Professor, National Cheng Kung University

Drawing from his contributions to the Android Open Source Project (AOSP), Jim specializes in real-time performance tuning and optimization of Linux-based automations. Additionally, he is a co-founder of the LXDE project, a lightweight desktop environment widely utilized in embedded... Read More →

Chi-Kuan Chiu

Student, National Cheng Kung University

Chi-Kuan Chiu is currently pursuing the B.S. degree in computer science with National Cheng Kung University.

Heterogeneous Linux and RTOS Software Architecture for Low Price RISC V Core pdf

Monday June 23, 2025 1:30pm - 2:10pm MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Beginner
Session Slides Yes

2:25pm MDT

The State of SBoMs in Embedded - Joshua Watt, Garmin

Monday June 23, 2025 2:25pm - 3:05pm MDT

Bluebird Ballroom 2A

Software Bill of Materials (SBoMs) are being increasingly called for in all Software ecosystems, to the point of being mandatory for regulatory compliance. The Embedded space is no different in this regard, so being aware of the available options for complying with SBoM is becoming critical for Embedded development.

In this talk, Joshua will outline prominent options for dealing with SBoM requirements across Open Source Embedded-focused projects, and what to look for in SBoMs for embedded projects to maximize their usefulness.

Speakers

Joshua Watt

Software Engineer, Garmin

Joshua has been working as a software engineer for Garmin since 2008, primarily focused on building products using the Yocto Project. He is also involved with the SPDX community and a member of the OpenEmbedded Technical Steering Committee.

The State of SBoMs in Embedded pdf

Monday June 23, 2025 2:25pm - 3:05pm MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Intermediate
Session Slides Yes

3:35pm MDT

Extending Power Over Ethernet to the LTC4266 - Kyle Swenson, Ericsson Software Techology

Monday June 23, 2025 3:35pm - 4:15pm MDT

Bluebird Ballroom 2A

Leveraging the recently added Power over Ethernet (PoE) Power Supply Equipment (PSE) support, this talk will go over the current status and the experience implementing support for the LTC4266, the last major PSE chipset on the market. We'll go over the basics of Power over Ethernet, the existing upstream support and in-kernel framework, the user-space interface for controlling PSE, and then dive into the LTC4266 driver specifics.

Speakers

Kyle Swenson

Prinicpal Engineer, Ericsson Software Techology

Kyle maintains the open-source components in the embedded Linux distributions that run on Ericsson's Enterprise Wireless Solution routers, primarily working with the Linux kernel.

ExtendingPoE LTC4266 pdf

Monday June 23, 2025 3:35pm - 4:15pm MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Intermediate
Session Slides Yes

4:30pm MDT

How To Accelerate Software Defined Vehicle(SDV) With OSS - Yuichi Kusakabe, Honda Motor Co., Ltd.

Monday June 23, 2025 4:30pm - 5:10pm MDT

Bluebird Ballroom 2A

This presentation is the story of Honda's first in-house software development of IVI(In-Vehicle Infotainment) software.
Why Honda promotes in-house software development - Building an in-house software development team that started with two people, All development process from scratch, There is no silver bullet that will solve many problems.
However, we were able to launch this model successfully based on Honda's DNA of Waigaya, A00, and 120% quality products. The key to this is the use of AOSP(Android Open Source Project) and some OSS.
This presentation will show how a traditional automotive OEM like Honda was able to create an in-house software development team and use OSS, including AOSP. By applying OpenChain(ISO/IEC 5230) self-certification and SPDX Lite to our development process, we solved many problems and achieved a higher starting point.
However, vehicles have difficult requirements, so we will tell you the points to minimize the customization of OSS.

Speakers

Yuichi Kusakabe

Chief Architect / OSPO Tech Lead, Honda Motor Co., Ltd.

Yuichi Kusakabe is the Chief Architect at Honda Motor Co., Ltd. , AGL(Automotive Grade Linux) member and COVESA(Connected Vehicle Systems Alliance) member since 2011 with over twenty years of Automotive and Open Source Software Experience. Prior to joining Honda Motor he worked for... Read More →

HowToAccelerateSoftwareDefinedVehicle(SDV)withOSS pdf

Monday June 23, 2025 4:30pm - 5:10pm MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Beginner

5:30pm MDT

BoF: State of Linux on ARM Laptops - Mani Sadhasivam & Stefan Schmidt, Linaro Ltd

Monday June 23, 2025 5:30pm - 6:30pm MDT

Bluebird Ballroom 2A

ARM Laptops are getting a lot of traction these from the OEMs, driven mostly by the customer interest. But majority of the ARM laptops are shipping with Windows pre- installed (exception being ARM based Macbooks). So developers often need to hack these laptops to get Linux running on it. And this obviously leads to fragmentation as each laptops require different process to run Linux. Starting from custom boot chain to hacked up distro. This BoF is all about about ARM laptops. Join us if you want to learn about the Linux experience on some of these laptops we've got our hands on or share your own experience if you've ever brought up or used Linux on them.

Speakers

Stefan Schmidt

Tech Lead / Senior Linux Kernel Engineer, Linaro Ltd.

Stefan Schmidt is a FOSS contributor for nearly 20 years now. During this time he worked on different projects and different layers of the Linux ecosystem. From bootloader and Kernel over build systems for embedded to user interfaces. After years as a freelancer, member of the Samsung... Read More →

Manivannan Sadhasivam

Senior Staff Engineer, Qualcomm India Pvt Ltd

Mani is an Open Source enthusiast working as a Senior Staff Engineer for Qualcomm India Pvt Ltd. He maintains the PCI Controller drivers, PCI Endpoint Subsystem, Qualcomm MHI bus, and several drivers in the Linux Kernel.

Monday June 23, 2025 5:30pm - 6:30pm MDT
Bluebird Ballroom 2A

Embedded Linux Conference

9:00am MDT

Debugging USB Type-C Power Delivery: Beauty and the Beast - Marcel Ziswiler, Codethink Ltd.

Tuesday June 24, 2025 9:00am - 9:40am MDT

Bluebird Ballroom 2A

While working with the RADXA ROCK 5B, a low-cost/high-performance RK3588 aarch64-based development board, we discovered that it is picky concerning the used USB Type-C power source. What was rather strange is that while it worked on our upstream Linux kernel (at the time of writing v6.13.1) based Embedded Linux system, it just boot-looped running RADXA's Debian (using a Rockchip downstream v6.1 based kernel). At the same time, my colleagues were working on the Testing in a Box version 2 (TIABv2) integrating USB Type-C power delivery which we plan to use in our board farm once ready. Of course, as soon as they had prototypes I gave it a try and it also showed the problem. By chance, both sides are using the exact same onsemi FUSB302B programmable USB Type-C controller with power delivery. The TIABv2 one is configured as a power source and the ROCK 5B one is configured as a power sink. This talk introduces the USB Type-C power delivery topic and then discusses how we joined forces and debugged both sides, at times giving the ball to the TIABv2 firmware, at other times to the Linux kernel fusb302 driver and back and forth again.

Speakers

Marcel Ziswiler

Senior Software Engineer, Codethink

In 2024 Marcel Ziswiler joined Codethink. Before, he spearheaded Toradex' Embedded Linux adoption. His intro of an upstream first policy led to being a top 10 U-Boot as well as Linux kernel Arm SoC contributor. He has broad experience in designing real-time and mobile applications... Read More →

Debugging USB Type C Power Delivery Beauty and the Beast Marcel Ziswiler, Codethink pdf

Tuesday June 24, 2025 9:00am - 9:40am MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Any

9:50am MDT

Skip the Wait: Maximizing SPI Throughput in the Linux Kernel With SPI Offloading - David Lechner, BayLibre

Tuesday June 24, 2025 9:50am - 10:30am MDT

Bluebird Ballroom 2A

SPI offloading is a new feature slated to land in the 6.15 kernel. Come learn what it is and what it can be used for.

“Offloading” is a generic term that refers to using additional hardware connected to a SPI controller to handle tasks traditionally done in software, like initiating a SPI transfer and handling an interrupt when the transfer is complete. Having these functions offloaded to hardware is useful for applications like high speed data acquisition (think 1 million samples per second for an ADC) or to meet latency requirements (think CAN bus controller).

In this session, we will cover the thought process that went into designing an interface that can handle these varied applications and the solution we arrived at. We will also take a side trip to discuss hardware triggers that can be used as part of the SPI offload functionality and how they could potentially become a standalone subsystem for generic hardware triggers. Then we will take a look at how we put it all together in a real ADC driver to get 2.5 million samples per second. Finally, we will cover other potential use cases for SPI offloading and how one could go about adding support for these.

Speakers

David Lechner

Sr. Software Engineer, BayLibre

David Lechner is an embedded software engineer at BayLibre. He has been working with embedded Linux systems since 2013 and is the kernel maintainer for LEGO MINDSTORMS EV3 among other things. He also has a background in electrical engineering and industrial automation.

SPI offloading ELC NA 2025 pdf

Tuesday June 24, 2025 9:50am - 10:30am MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Intermediate
Session Slides Yes

11:00am MDT

Sensor Data Acquisition With Linux's IIO Subsystem and Libiio - Robin Getz, MathWorks

Tuesday June 24, 2025 11:00am - 11:40am MDT

Bluebird Ballroom 2A

This presentation showcases optimizing sensor data acquisition for embedded systems using the Linux IIO subsystem and libiio, with a special focus on developing algorithms on the host to capture data from remote hardware. The IIO subsystem offers a versatile framework for interfacing with sensors like ADCs, DACs, and IMUs, streamlining the management of diverse data streams. With libiio, developers can capture data from remote devices efficiently, simplifying integration and allowing for sophisticated data processing in user-space applications. We explore the architecture of the IIO subsystem, highlighting its modular design that enhances scalability and adaptability in embedded settings. The paper also covers practical methods for configuring and optimizing IIO drivers to improve performance and reliability. Real-world examples with Raspberry Pi demonstrate how libiio supports the rapid prototyping and deployment of sensor applications, with an emphasis on developing algorithms on the host. Attendees will learn best practices for creating high-performance data acquisition systems that ensure seamless integration and efficient resource use across distributed systems.

Speakers

Robin Getz

Senior Director, Bose

Director of System Engineering with 20+ years in embedded systems. Skilled in management, product development, and systems architecture. Passionate about sensors, data acquisition, and SOC designs. I focus on innovation, and delivering quality user experiences.

LinuxIIO OSS NA25 pdf

LinuxIIO OSS NA25 pptx

Tuesday June 24, 2025 11:00am - 11:40am MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Intermediate

11:55am MDT

Virtio for PCI Endpoint Subsystem in Linux Kernel - Manivannan Sadhasivam, Linaro Ltd

Tuesday June 24, 2025 11:55am - 12:35pm MDT

Bluebird Ballroom 2A

Traditionally, Virtio is primarily used in virtualized environments to allow the Hypervisor to Guest communication in an agnostic way. But Virtio as a standard can be leveraged outside virtualization for communication between any two entities.

The PCI Endpoint subsystem in the Linux kernel is used to run Linux on tiny PCI endpoint devices such as modems, NIC, GPU, etc... It requires the developers to write function drivers to communicate with the host. On most occasions, these function
drivers also require counterpart drivers on the host systems. This increases the time required for the project's development, as the development needs to happen on both the host and endpoint systems.

This is where Virtio comes in handy for the PCI Endpoint subsystem. With Virtio, developers can focus on developing the back-end drivers on the endpoint side and leverage the existing front-end drivers on host systems (such as virt-net, virt-gpu, etc...).

In this talk, Manivannan Sadhasivam will present the proposals received from the community for adding Virtio backend support to the PCI Endpoint subsystem and elaborate on the one that got a consensus to move forward, along with the future plans.

Speakers

Manivannan Sadhasivam

Senior Staff Engineer, Qualcomm India Pvt Ltd

OSS NA25 pdf

Tuesday June 24, 2025 11:55am - 12:35pm MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Intermediate
Session Slides Yes

2:10pm MDT

ARM64 Linux Laptops Status Report - Stefan Schmidt, Linaro Ltd.

Tuesday June 24, 2025 2:10pm - 2:50pm MDT

Bluebird Ballroom 2A

In June last year a bunch of new laptops, based on the Snapdragon X Elite, have been launched. All major laptop vendors launched devices, with over three
dozen to choose from at the time of this writing. Offering a nice alternative to ChromeBooks or MacBooks for Arm enthusiasts. No matter if you are intrigued by the battery life, performance or always wanted an arm64 based system to natively
compile for your embedded targets.

The core question is, how good is the Linux support. Being designed for Windows-on-ARM there is a risk Linux support is rudimentary at best. Does boot with UEFI work out of the box? Is there a device tree description for your specific device? Which hardware features are already supported mainline?
Is the firmware for various drivers available? How is the performance?

In short, is it usable as a daily driver for a developer? Stefan set out to find out, and report here.

In this talk he will provide details on the current state of development of these devices. An in-depth view on the hardware support: what is in mainline, which patches are pending and what is missing completely.
[Target: ELC North America]

Speakers

Stefan Schmidt

Tech Lead / Senior Linux Kernel Engineer, Linaro Ltd.

2025 06 OSS ELC ARM laptop status pdf

Tuesday June 24, 2025 2:10pm - 2:50pm MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Intermediate
Session Slides Yes

3:05pm MDT

Dynamic VM Memory Resizing daemon (vmrd) - Sudarshan Rajagopalan, Qualcomm

Tuesday June 24, 2025 3:05pm - 3:45pm MDT

Bluebird Ballroom 2A

We describe about a userspace daemon that integrates with the Linux kernel's Pressure Stall Information (PSI) mechanism to monitor and detect memory pressure events, and requests for adding/removing memory blocks from the host based on real-time memory demands in the system without need for intervention of an admin/host. The virtio-mem interface is used for communicating with the host for adding/removing memory blocks.

Detecting increase in memory demand – the daemon registers to certain PSI events and monitors pressure building up when memory allocations occurs. Using these predefined thresholds trigger the daemon to request additional memory from the host when minimal pressure is detected, indicating an active memory-intensive use case is running.

Detecting decrease in memory pressure – the daemon monitors pressure decay and psi averages (avg10, avg60, avg300) along with other memory stats. and makes an educated guess about memory usecases have ended and releases blocks back to host. The process of tracking memory pressure going down and releasing memory back to host is done in a separate thread.

More details on design and logic will be explained in the presentation session.

Speakers

Sudarshan Rajagopalan

Linux Kernel Developer, Qualcomm

Working as Linux Kernel Developer in Qualcomm for the past 7 years. Interests are in Embedded Systems and Firmware, System designs and Computer Architecture.

Dynamic VM Memory Resizing Daemon (vmrd) pdf

Tuesday June 24, 2025 3:05pm - 3:45pm MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Intermediate

4:20pm MDT

Unlocking the Full Potential of WPE To Build a Successful Embedded Product - Mario Sanchez-Prada, Igalia

Tuesday June 24, 2025 4:20pm - 5:00pm MDT

Bluebird Ballroom 2A

The Web engine is the most important component of a Web browser, enabling developers to leverage the Web Platform for their applications. And thanks to Open Source Web engines like WPE, it is now possible to build all kinds of products for embedded devices using Web-based technologies, from set-top boxes and smart home appliances to GPS devices and in-flight infotainment systems, to name a few.

Unfortunately, companies usually fall into the trap of applying one-off fixes to meet their immediate needs, accumulating technical debt and struggling to adapt to the evolving nature of the Open Source projects they heavily rely on. On top of that, it makes it difficult to ensure that the stable releases of such projects properly fit the needs of the products they intend to build, leading to spending too much time being reactive to integration-related problems instead of focusing on building a great product.

In this session, we will focus on explaining the best practices to unlock the full power of WPE without falling into such traps, so that you can focus on building a stronger foundation for your future embedded products with WPE, while keeping maintenance costs under control.

Speakers

Mario Sanchez-Prada

Software Engineer and WebKit Team coordinator at Igalia, Igalia

Software engineer and partner at Igalia with 19+ years of experience working on the development of Linux-based Operating Systems, the GNOME platform, Web engines (i.e. WebKit, Blink) and Web browsers (Epiphany, Chromium).Past experience includes work on the Maemo project, Litl OS... Read More →

20250624 UnlockingtheFullPotentialOfWPE pdf

Tuesday June 24, 2025 4:20pm - 5:00pm MDT
Bluebird Ballroom 2A

Embedded Linux Conference

Audience Experience Level Any
Session Slides Yes