Re: GSoC 2022: Add S3 resume support to MinPlatform
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I'm looking for feedback on a proposal for a large project. I intend to implement S3 resume for MinPlatform (medium project) and develop closed chassis debug over an HDMI cable as an additional project to assist the bringup work. Commonly, serial ports in laptops are either difficult to access or missing entirely. As Nate has previously addressed (https://github.com/nate-desimone/Bus_Pirate#closed-chassis-debug-over-hdmi), HDMI's DDC pins offer a connection to an I2C controller available early in the boot process, making it a good candidate as early, accessible debug port.
On Intel chipsets, the GMBUS implements the I2C controller. It has registers inside the iGFX MMIO and is documented in Intel's iGFX PRMs. I plan to use the register definitions and the documentation of EDID access, along with the I2C specification, to develop this project.
Would this make for a good project proposal? I'd appreciate any feedback. Thanks.
On Tue, 22 Mar 2022 at 17:14, Benjamin Doron <benjamin.doron00@...> wrote: