#PinePhone’s mysterious LCD Display and its MIPI Digital Serial Interface ... All secrets shall be revealed in this article
#PinePhone's LCD Display works like a super-sized PineTime Display ... We'll find out why
https://lupyuen.github.io/articles/dsi?2#from-pinetime-to-pinephone
#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
#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
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
#PinePhone must send these (mysterious) commands to ST7703 LCD Controller at startup
https://lupyuen.github.io/articles/dsi?7#initialise-lcd-controller
#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'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'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 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
How #PinePhone initialises the MIPI Display Serial Interface
https://lupyuen.github.io/articles/dsi?11#initialise-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 transmits Long Packets over the MIPI Display Serial Interface
https://lupyuen.github.io/articles/dsi?15#transmit-packet-over-mipi-dsi
Rendering on #PinePhone's MIPI DSI Display gets complicated ... We need Allwinner A64's Display Engine and Timing Controller
#PinePhone p-boot has helpful code for Allwinner A64's Display Engine and Timing Controller
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
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
For details on MIPI Display Serial Interface, check out the BL808 Reference Manual
How does #PinePhone @PINE64 control its LCD Display? Let's uncover all the secrets about PinePhone's mysterious LCD Display and its MIPI Display Serial Interface...
@lupyuen thank you, Prof!
@ademalsasa Thanks for reading :-)
#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