Synopsys DesignWare MIPI DSI Host Controller

Target hardware

The Synopsys DesignWare MIPI DSI Host Controller IP block is used on the following SoCs:

• AMLogic A311D (G12B) - on Khadas VIM3
• AMLogic S905D3 (SM1) - on Nelson
• AMLogic T931 (G12B) - on Sherlock
• AMLogic S905D2 (G12B) - on Astro

Hardware Model

The DesignWare MIPI DSI Host Controller contains the following I/O interfaces:

• An extended MIPI DPI-2 (Display Pixel Interface) to read pixels in video mode.
• A MIPI DBI (Display Binary Interface) for command request and response transmission.
• A MIPI D-PHY interface that connects to a PHY transmitter to transmit output signals to a display peripheral.

The DSI Host Controller takes in requests / pixels from the DBI and DPI interfaces, converts them into packets and sends the encoded packets over the D-PHY.

References

The code contains references to the following documents:

• Synopsys DesignWare Cores MIPI DSI Host Controller Databook
  • version 1.51a, dated May 2021; available from Synopsys. Referenced as “DSI Host Databook”.
• Synopsys DesignWare Cores MIPI DSI Host Controller User Guide
  • version 1.31a, dated May 2015; available from Synopsys. Referenced as “DSI Host User Guide”.
• MIPI Alliance Specification for Display Serial Interface 2 (DSI-2) - Version 2.1, dated 21 December 2022, referenced as “DSI spec”
• MIPI Alliance Specification for D-PHY - Version 3.5, dated 29 March 2023, referenced as “D-PHY spec”