AMD Posts Proposal & Linux Patches For eSPI Subsystem
AMD has posted patches proposing a new Linux subsystem for the Enhanced Serial Peripheral Interface (eSPI) standard. The patches include a new driver for AMD's hardware and have been tested and validated on an AMDI0070 platform.
Intelligence analysis by Llama
AMD has proposed a new Linux subsystem for the eSPI standard, which includes a new driver for their hardware. The patches have been tested and validated on an AMDI0070 platform and work as expected.
Imagine you have a lot of devices connected to your computer, like a keyboard, mouse, and printer. The eSPI standard is a way for these devices to talk to each other and to your computer. AMD has proposed a new way of doing this, called a Linux subsystem, which will make it easier for devices to communicate with each other and with your computer.
Analysis
A New Linux Subsystem for eSPI
AMD has posted patches proposing a new Linux subsystem for the Enhanced Serial Peripheral Interface (eSPI) standard. This new subsystem is designed to improve the functionality of AMD's hardware and provide a more efficient way of communicating with peripherals.
The patches include a new driver for AMD's hardware, which has been tested and validated on an AMDI0070 platform. The driver works as expected and provides a stable and efficient way of communicating with peripherals.
One of the known limitations of the new subsystem is the lack of Device Tree support, as the AMD code just uses ACPI. Additionally, slave device enumeration is manual, and some operations will be added in follow-on patches.
Why eSPI Matters
The eSPI standard was originally developed by Intel as a communication protocol for linking to the BIOS, system controllers, and other peripherals like TPMs. It provides an alternative to the LPC interface, traditional SPI, and other side-band signalling.
With AMD now making use of eSPI, they are proposing a new subsystem for it within the Linux kernel. This new subsystem will provide a more efficient way of communicating with peripherals and improve the functionality of AMD's hardware.
The Road Ahead
The patches proposed by AMD are doing the latter with an initial user of this subsystem being a new AMD eSPI driver. Those interested in this AMD eSPI work for the Linux kernel can find the patch series on the kernel mailing list.
The development of this new subsystem is an important step in improving the functionality of AMD's hardware and providing a more efficient way of communicating with peripherals. It will be interesting to see how this new subsystem develops and how it will be used in the future.
Key points
- AMD has posted patches proposing a new Linux subsystem for the eSPI standard.
- The patches include a new driver for AMD's hardware, which has been tested and validated on an AMDI0070 platform.
- The new subsystem will provide a more efficient way of communicating with peripherals and improve the functionality of AMD's hardware.
- The patches proposed by AMD are doing the latter with an initial user of this subsystem being a new AMD eSPI driver.
If this new subsystem is successfully implemented, it could lead to improved performance and functionality of AMD's hardware. It could also pave the way for other companies to develop similar subsystems, leading to a more efficient and connected computing experience.
However, there are some known limitations of the new subsystem, such as the lack of Device Tree support and manual slave device enumeration. If these limitations are not addressed, it could lead to instability and inefficiency in the system.
