#StackBounty: #raspbian #display #windows-iot #dsi #android-things Raspberry Pi 3 Smartphone LCD

Bounty: 50

Recently I was trying to connect RPI3 to a smartphone LCD which supporting MIPI DSI interface. I choose Huawei Y320 LCD (800×480) because of its documents availability and of course the price,
This is the related LCD connector schematics:

Y320-Sch1

Y320-Sch2

2 various schematic sources make us sure that’s correct.
Then I have designed a PCB like images blow:
SCH-RPI3-DSI

Y320 LCD PCB

Backlight voltage is 28V and I think it’s OK.
VCI: 3.3V
IOVCC: 1.8V
All other connections from Lcd pin to RPI board triple checked !!! quite sure no interconnection and disconnection.
In config.txt file I have added these lines:

ignore_lcd=0
display_default_lcd=1

I tried this for windows 10 iot core, Anroid Thing, Raspbian jessie. But nothing happened! just a white backlight. I even tried this code but nothing changed.

lcd_rotate=2 

and resolution setting.
I have checked all DSI pins with oscilloscope but no waveform. changing LCD didn’t work too.
HDMI connection is working perfectly but DSI …
I will be so grateful if you correct me if you find any mistakes,
Thanks,

Here is files if you need to take a look at:
Y320 SCH1

Y320 SHC2

Designed sch-pcb


Get this bounty!!!

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