Matt Porter

This tutorial will briefly introduce the Linux IIO and Input subsystems to students. The focus of the tutorial will be a guided hands-on lab where the students write a new driver that leverages the IIO and Input kernel subsystems. The lab will be conducted using the E-ALE hardware kit.  All the Embedded Apprentice Linux Engineer classes will involve using embedded hardware during the hands-on labs.

The Serial Peripheral Interface (SPI) bus is a ubiquitous de facto standard found in many embedded systems produced today. The Linux kernel has long supported this bus via a comprehensive framework which supports both SPI master and slave devices. The session will explore the abstractions the framework provides to expose this hardware to both kernel and userspace clients. In addition, we will discuss subtle features of the SPI subsystem that may be used to satisfy hardware and performance requirements in an embedded Linux system.

This session is intended to bring together anybody that debugs the Linux kernel to share best practices and brainstorm new ideas. Topics may range from .config testing, module/built-in drivers, hardware/software tools and test methods for testing specific driver subsystems, VM/scheduler/interrupt stress testing, and beyond. The discussion is targeted at Linux kernel developers, QA/test engineers, and Linux product engineers with the goal of testing Linux kernel integrity.

Device Tree is a hardware data abstraction currently in widespread use in the Linux kernel. In this session, Matt Porter will guide an exploration of Device Tree from the origins of DT all the way to an analysis of applications of DT in the Linux kernel. Focus will be placed upon understanding the fundamentals of DT and demonstrating use via relevant examples of common community board DT source files in the kernel. Matt will also introduce the new dynamic DT overlay feature, explaining the driving use cases for this feature, concepts, syntax, and how overlays may be used in a system.