kedei 3.5 inch spi tft lcd for raspberry pi price

The scaler chip don"t accept as proper HDMI signal when this one have around 12MHz (this is a pixel clock frequency for 480x320RGB - I think the scaler have lower-limit around 20-few MHz) and this exact frequency is calculated by xrandr .

But WHY it works with hdmi_cvt, well hdmi_cvt actually make the hardware to generate 47MHz pixel clock with 4-pixels-data per one physical pixel, the scaler chip detect this and display only every 4th pixel... (so the transferred image have actually 1920x320 resolution / 4x480=1920! )

I had in plans to create a custom driver but I decided this is not worth my time. I"m going to "re-interface" this lcd to be supported by fbtft. I have a prototype pcb with fbtft-spi interface ready (I have to send this project to pcb prototype service).

Unfortunatly, because of my "spider-circuit" I"ve broken my lcd (I"ve made a some short