Explore the intricacies of USB Type-C implementation in this informative conference talk by Diana Zigterman and Samuel Hurst from Google. Gain insights into the USB Implementers Forum specifications for creating USB Type-C systems and learn how to leverage the Zephyr USB-C subsystem to achieve your goals. Delve into topics such as port role recap, accessing specifications, understanding various USB Type-C states, power delivery support, and the three-step process for creating a USB Type-C device. Discover Zephyr's USB Type-C port perspective, including devicetree descriptions, port controller drivers, and minimum sink policy callbacks. Follow the power delivery negotiation process step-by-step and learn about power role swaps. Familiarize yourself with registering application data structures, starting the Zephyr USB Type-C stack, and explore available samples and boards for practical implementation.
USB Type-C Implementation in Zephyr: Features, Requirements, and Development
Overview
Syllabus
Intro
Port Role Recap
Accessing the Specifications
Roles: Which of these USB Type-C states apply to me?
Roles: Do I have to source Vconn?
Do I need Power Delivery support?
Which PD messages do I have to support?
Three Steps to create a USB Type-C Device
Zephyr's USB Type-C Port perspective
Devicetree USB Type-C Sink Port description
Type-C Port Controller (TCPC) Driver
VBUS Driver
Minimum Sink Policy Callbacks
Power Delivery Negotiation (Step 1)
Power Delivery Negotiation (Step 2)
Power Delivery Negotiation (Step 3)
Power Delivery Negotiation (Step 4)
Power Role Swap to Source
Register the Application's data structure
Start the Zephyr USB Type-C stack
Zephyr USB Type-C Samples
Zephyr USB Type-C Boards
Taught by
Linux Foundation
