Author Topic: Controller/processor with MIPI DSI  (Read 6724 times)

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Offline davorin

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Controller/processor with MIPI DSI
« on: June 16, 2015, 04:02:56 pm »
Does anyone know which CPU/controller has a built-in MIPI DSI interface for connecting a small TFT?

I know that the Broadcom CPUs used on the Raspberry Pi have DSI, but there is still no driver available after all these years...

It should be able to run a Linux system as I would like to build a small clock like mini computer with BT and WLAN...
The other option is to hook my round TFT to a FPGA which connects to a small Intel Edison module.
 

Offline nctnico

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Re: Controller/processor with MIPI DSI
« Reply #1 on: June 16, 2015, 05:05:36 pm »
Freescale iMX6
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline Ribster

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Offline Scrts

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Re: Controller/processor with MIPI DSI
« Reply #3 on: June 16, 2015, 07:31:13 pm »
You can find RGB to MIPI DSI chips fairly cheap.
 

Offline davorin

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Re: Controller/processor with MIPI DSI
« Reply #4 on: June 17, 2015, 06:18:45 am »
Hmm..i.MX6 is a little overkill with its graphic capabilities for a small 320x320 round TFT display (o;

STM32F4 series looks nice...as I already have a board running a Linux distro....

Another option would be to use a Cyclone V SoC FPGA, as their hard wired core has a really good performance...and DSI interface could be integrated in same chip as well....

First I need to do a small PCB for interfacing the small 0.4mm Mezzanine connector of the display to my Cyclone V SoC board and start experimenting with the timing and the capacitive touch controller...
 

Offline Ribster

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Re: Controller/processor with MIPI DSI
« Reply #5 on: June 19, 2015, 05:33:41 am »
hey davorin,

I'm quite interested in your implementation of the MIPI DSI.
Over at mike's electronic stuff, you can find a reverse engineering effort succes of an ipod LCD.
That uses the same MIPI-DSI interface, and can come in handy.

You can also take a look here. There is code posted on his github as well.
https://hackaday.io/project/364-mipi-dsi-display-shieldhdmi-adapter

As i said, i'm interested in doing the same thing in the future.. So feel free to post an update somewhere ;)
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Offline Yansi

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Re: Controller/processor with MIPI DSI
« Reply #6 on: June 19, 2015, 06:11:42 am »
ST also has new STM32F7 series MCUs, these are Cortex M7,  should run 200MHz, has MIPI.
 

Offline Scrts

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Re: Controller/processor with MIPI DSI
« Reply #7 on: June 19, 2015, 10:52:16 pm »
ST also has new STM32F7 series MCUs, these are Cortex M7,  should run 200MHz, has MIPI.

Which particular device? Is it going to be CSI and DSI?
 

Offline Yansi

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Re: Controller/processor with MIPI DSI
« Reply #8 on: June 20, 2015, 02:42:45 am »
Isn't the manual available on ST pages? (I don't know, I have access to internal stuff :-) )
I can't tell now, bcs I don't know. I haven't toyed much with F7 yet, last time I toy with L4 mostly.

And I think that the new F469 should also have the MIPI and the DS and RM should be available on the web.

//EDIT: Saidly, no manuals available for public, only NDA. But it is MIPI DSI. Both F479 and F746. (these two should share the same peripherals).
« Last Edit: June 20, 2015, 02:44:32 am by Yansi »
 

Offline davorin

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Re: Controller/processor with MIPI DSI
« Reply #9 on: June 20, 2015, 02:50:49 am »
Does this mean the STM32F7 manuals will never be publicly available because it contains a display interface normally used for mobile devices?
 

Offline Yansi

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Re: Controller/processor with MIPI DSI
« Reply #10 on: June 20, 2015, 06:43:44 am »
Ofcourse not, sorry if it wasn't clear. But with our company policy it's quite not sure "when or where". I tried to ask, but even internal people couldn't give me any specific answer about that. We must only wait. And wait... The F7's are imho still in test-production.
 

Offline Scrts

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Re: Controller/processor with MIPI DSI
« Reply #11 on: June 21, 2015, 11:57:52 pm »
Ofcourse not, sorry if it wasn't clear. But with our company policy it's quite not sure "when or where". I tried to ask, but even internal people couldn't give me any specific answer about that. We must only wait. And wait... The F7's are imho still in test-production.

Do you know if any of F7 will be automotive qualified?
 

Offline Yansi

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Re: Controller/processor with MIPI DSI
« Reply #12 on: June 22, 2015, 12:12:01 am »
Dont know anything about that, but possibly not. No STM32 has automotive certificate as I know. But I can ask tommorow.
 


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