linux-chenxing.org
IDO-SBC2D86-V1A
Thiny ssd202d based board with a 4 inch screen.
Hardware
- SigmaStar SSD202D
- TG040H02-CT-V 4 inch 720 x 720 LCD module.
- FRD720X720BK 4 inch LCD
- Goodix touchpanel controller
- Init code
- HYM8563 RTC, connected to i2c0
- On the boards I have at least this requires rework to make work:
- The RTC battery is shorted, it needs to be removed and replaced
- i2c sda and scl signals are swapped.
- On the boards I have at least this requires rework to make work:
- ES7243 - “High Performance Stereo Audio ADC”, connected to i2c0
- Unisound US516P6
- LPA4871(?) mono amp
- FS35ND02G - SPI NAND
- SSW101B - Crappy WiFi
- WT5105 - BLE (phyplus62xx series?)
- NS4150B - Audio amp
- SY7201 (DQCRA) - LED driver
- SY6280 (COCPK) - Power switch
Pins
- GPIO4 - backlight control?
- GPIO5 - backlight control?
- GPIO47?? - vbus control for external usb
- GPIO11 - external usb power control
Connectors
- J4 i2c is i2c0, shared with RTC and ES7243
Notes
# gpioset 0 16=0
[ 1099.114719] usb 1-1: USB disconnect, device number 2
# gpioset 0 16=1
# [ 1177.169962] usb 1-1: new high-speed USB device number 3 using fotg210-hcd
[ 1177.371156] usb 1-1: Dual-Role OTG device on non-HNP port