AnsweredAssumed Answered

About IPU preview performance in i.MX6DQ.

Question asked by Keita Nagashima on May 21, 2015
Latest reply on May 22, 2015 by igorpadykov

Dear All,

 

I'd like to know the preview performance in i.MX6DQ.

In the case of input 1080p@60fps video data from MIPI-CSI2, is it possible to use the preview function?

 

<Q1>

[Data] : 1920(W) * 1080(H) * 60(fps) * 1.35(Blanking) * 24(bit) = 3,844 Mbit/s = 480 MByte/s

[MIPI-CSI2] : 800Mbps/lane for four data lanes configuration = 400 MBytes/s

--> [Data] > [MIPI-CSI2]

 

From the above results, I consider i.MX6DQ (MIPI-CSI2 I/F) cannot support 1080p@60fps.

Is my understanding correct?

 

<Q2>

[Data] : 1920(W) * 1080(H) * 60(fps) * 1.35(Blanking) * 16(bit) = 2,563 Mbit/s = 320 MByte/s

-->  [Data] < [MIPI-CSI2]

 

In this case, is it possible to use the preview function?

I worried about CPU load, data transfer internal IPU, and CSI performance(CSI2IPU gasket: MIPI to CSI),etc.

 

Please give me advice.

 

Best Regards,
Keita

Outcomes