The Dock is internally called "Cradle"(strings/symbols in system-titles).

Components

Function Component Notes
MyDP -> HDMI Converter MegaChips STDP2550 "Mystique" 2Mb flash contains firmware
Based on STMicroelectronics Mystique family of DP converters.
USB Hub VIA Labs VL210 USB 3.0 Hub Controller 512Kb flash is configuration storage
USB Device Cortex-M0 based (STM32F0-ish)
"32P048"
SWD clearly labelled and enabled
Provides control of the Mystique
Dumps (fw-1.0.0):
flash
sysmem
SRAM
Relevant manual
Flash Macronix MX25L512E 512Kb CMOS dump (fw-1.0.0)
Macronix MX25V2006E 2Mb CMOS dump (fw-1.0.0)
USB-PD ROHM BM92T17 One at i2c addr 0x18, the other at 0x1a
bm92t1x datasheet
bm92t5x datasheet
ROHM BM92T55

Other Resources

  1. List of compatible USB devices
  2. iFixit's Nintendo Switch teardown
  3. dekuNukem's Reverse Engineering