Hi,
Am 27.02.2014 um 01:39 schrieb Michael Mrozek:
Okay, so I took a look at all that MIPI stuff tonight and hope I can be a bit of help.
As we know, MIPI only gives out specifications if you become a member (which is horribly expensive).
Unfortunatley...
OculusVR is a member, so I could get more needed details from Palmer if we need them.
Ah, that may be really helpful!
Additionally, TI is a founder of the MIPI alliance, so they might be able to help us out with further documentation as well.
However, I was able to find PDF copies of the MIPI Specifications, that might be of help. The most important one is probably the DCS command set documentation. It tells us a lot about how to speak to the display, and even request diagnostic information back!
I already have studied those documents except that one. I had tried to find it a while ago (it is referenced in other documents) but without success.
Great thanks!
Unfortunately it turns out that it is not the newest release. E.g. the backlight commands are not described. And of course the manufacturer specific commands of the R63311 aren't as well.
Maybe in there there's the hidden clue to get it working - maybe after you initialize it, you need to send a DCS to tell it to become active... who knows.
Yes. We are doing everything as described in the DCS command and the responses we can read (power mode etc.) are as expected (I have tested that a while ago).
Well, I attached all these documents, together with a copy of "DSI Demystified" by TI - which seems to give more information about MIPI and the OMAP as well.
Yes (it is part of the package we did FTP download from TI). Our signals look exactly as described there - at least as much as we can see (the problem may also be hidden in some invisible detail).
I hope that helps. Let me know if there's anything else I can look for.
I'll phone up Renesas about the IC driver datasheet as well (though as far as I understood, MIPI DCS is standard, so I'm not sure we learn more about that here).
I think I described it several times: there are Renesas defined commands that go beyond any spec by MIPI. MIPI-DCS only defines that they can exist but not what they do. E.g. the commands to control voltage converters on the panel.
BR, Nikolaus