Lup Yuen Lee 李立源 @lupyuen@qoto.org

For details on MIPI Display Serial Interface, check out the BL808 Reference Manual

https://lupyuen.github.io/articles/dsi?18#notes

Experimenting with #PinePhone Display ... On Apache #NuttX RTOS 🤔

https://gist.github.com/lupyuen/ee3adf76e76881609845d0ab0f768a95

MIPI DPHY is the Physical Layer for #PinePhone's MIPI DSI Display ... Doesn't seem to be documented in Allwinner A64 🤔

https://lupyuen.github.io/articles/dsi?18#appendix-mipi-dphy

Apache #NuttX Display Driver for #PinePhone ... Here's how we'll create the driver

https://lupyuen.github.io/articles/dsi?17#nuttx-display-driver-for-pinephone

#PinePhone p-boot has helpful code for Allwinner A64's Display Engine and Timing Controller

https://lupyuen.github.io/articles/dsi?16#render-display

Rendering on #PinePhone's MIPI DSI Display gets complicated ... We need Allwinner A64's Display Engine and Timing Controller

https://lupyuen.github.io/articles/dsi?16#render-display

How #PinePhone transmits Long Packets over the MIPI Display Serial Interface

https://lupyuen.github.io/articles/dsi?15#transmit-packet-over-mipi-dsi

#PinePhone sends Long Packets to the MIPI Display Serial Interface ... To init the ST7703 LCD Controller

https://lupyuen.github.io/articles/dsi?12#long-packet-for-mipi-dsi

How #PinePhone initialises the MIPI Display Serial Interface

https://lupyuen.github.io/articles/dsi?11#initialise-mipi-dsi

#PinePhone's MIPI DSI Registers are actually documented in Allwinner A31 ... Which is a 32-bit SoC!

https://lupyuen.github.io/articles/dsi?10#a64-registers-for-mipi-dsi

New #RISCV #BL602 products by Ai-Thinker

https://docs.ai-thinker.com/en/wb2

#PinePhone's MIPI DSI Interface uses Data Types to differentiate Display Commands and Pixel Data

https://lupyuen.github.io/articles/dsi?9#video-mode-only-for-mipi-dsi

#PinePhone's ST7703 LCD Controller only works in MIPI DSI Video Mode (not Command Mode)

https://lupyuen.github.io/articles/dsi?9#video-mode-only-for-mipi-dsi

#PinePhone controls its LCD Display by sending DCS Commands to ST7703

https://lupyuen.github.io/articles/dsi?8#display-command-set-for-mipi-dsi

#PinePhone must send these (mysterious) commands to ST7703 LCD Controller at startup

https://lupyuen.github.io/articles/dsi?7#initialise-lcd-controller

Inside #PinePhone's Display is Sitronix ST7703 LCD Controller ... Yep the super-sized sibling of PineTime's LCD Controller!

https://lupyuen.github.io/articles/dsi?6#sitronix-st7703-lcd-controller

BL808 has a 64-bit #RISCV CPU for "security monitoring, intelligent audio processing, and intelligent video processing"

https://github.com/sipeed/sipeed2022_autumn_competition/blob/main/assets/BL808_RM_en.pdf

#PinePhone is connected to the Xingbangda XBD599 LCD Panel ... Says the Linux Device Tree

https://lupyuen.github.io/articles/dsi?5#xingbangda-xbd599-lcd-panel

#PinePhone's MIPI Display Serial Interface has 4 Data Lanes ... And uses Differential Signalling (similar to HDMI and USB)

https://lupyuen.github.io/articles/dsi?4#connector-for-mipi-dsi

#PinePhone Schematic says that the Allwinner A64 SoC is connected to the LCD Display via a MIPI Digital Serial Interface (DSI)

https://lupyuen.github.io/articles/dsi?3#pinephone-schematic