kedei 3.5 inch spi tft lcd for raspberry pi manufacturer

While googling for any info about lcd controller I came across this page: http://heikki.virekunnas.fi/2015/raspberry-pi-tft/, author managed to get from manufacturer patch file for kernel sources and tested it with 4.1.y - on which lcd worked. But still LCD replace HDMI, but I want to use this screen as additional for user interaction, while the bigger on HDMI as presentation monitor.

Since, fbtft has been merged with rpi kernel, so the fb drivers (including ili9341.c) was moved to fbtft_device driver (so the author of page can"t compile latest kernel with driver+patch).

So something about hardware, which I reverse engineered by the "hard way" - "grab multimeter and run through all LCD FPC pins and shift register pins"

Now I noticed there is "9486L" which can suggest that LCD screen is controlled by ILI9486L, I found this LCD on taobao too but I can"t contact seller.

I"m pretty sure about D/C (Pin 37 on LCD) and Reset (Pin 19 on LCD) pins by looking into driver code, but I can"t identify other signals (WR/RD/CS/etc...)

[ 0.000000] Kernel command line: dma.dmachans=0x7f35 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2709.boardrev=0xa01041 bcm2709.serial=0x2938b030 smsc95xx.macaddr=B8:27:EB:38:B0:30 bcm2708_fb.fbswap=1 bcm2709.disk_led_gpio=47 bcm2709.disk_led_active_low=0 sdhci-bcm2708.emmc_clock_freq=250000000 vc_mem.mem_base=0x3dc00000 vc_mem.mem_size=0x3f000000 dwc_otg.lpm_enable=0 console=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait

[ 4.838806] input: MOSART Semi. Rapoo 2.4G Wireless Touch Desktop as /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3:1.0/0003:24AE:1000.0001/input/input1

[ 4.902783] input: MOSART Semi. Rapoo 2.4G Wireless Touch Desktop as /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3:1.1/0003:24AE:1000.0002/input/input2

- Controller is not ILI9341/ILI9325 - those are for smaller displays (320x240, etc...), I guess this might be ILI9486/9488 because they are for 480x320 displays. But when I compared init with DS it does not fit right so LCD can have a clone of ILI9486/9488 ...

- Module use only SPI interface and two CE signals (CE0 for touch controller, CE1 for LCD shift registers - compared to others lcd modules, in KeDei module this is swapped),

So I just purchased a KeDei 3.5" TFT Display (v6.3) for my Raspberry Pi 3, and I have found out that the display only works with premade Raspbian / Ubuntu / Kali images. This wouldn"t be a problem, but those modified images don"t seem to work with HDMI. What I want is to be able to use HDMI with my TV/Monitor, and when I take my Pi to go, I"d like to just be able to plug the display into the Pi. I installed the drivers on Raspbian Pixel, when booting up the Pi with the KeDei display after installing the drivers, it just froze on the console. I plugged in an HDMI monitor (while the display was still plugged in) and rebooted my Pi, and it went past the console and booted to the Desktop on the HDMI monitor, but not on the LCD Display.

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