Hi ,
Its not analog video as such.
It will get encoded into h264 at the Slave Davinci and Audio also in the
same fashion.
Then transfer it into Host Davinci thur PCI. thats the moto.
So here ,
Davinci slave: (Capture Chip):-
------------------------------------------------
4 Video in h264 Encoded
4 Audios in Compressed
Davinci Host(Display/Streamer Chip):-
-------------------------------------------------------------
Stream 4 Channel (A+V)
Decode/Display 4 Channel
This is the situation. So, Rather than 4 Analog video, here we have 4 Video
+ 4 Audio (Both encoded) to be transfered in PCI. So its more than 30Mbps
for all video and Audio.
but we think of using ata-hdd with PCI for saving the stream again. so
altogether purpose we need PCI to be used in this manner.
If the DVEVM can be connected as a PCI device to Normal Linux PC and at the
same time it can support PCI interface as a Host , can thi sbe achieved ?
I'm worried about , if Davinci PCI driver can support both at same time, ie
support PCI slace davinci and support ATA HD slave at PCI ?
Regards,
Renjith.
On Wed, Aug 6, 2008 at 5:12 AM, Albert Burbea <[EMAIL PROTECTED]> wrote:
> hi guys
> analog video is around 27 mbytes/sec, so 4 video will be 108 mb/sec
> I do not know if the pci is 66 or 33 mhz. if it is 66 it can be done, at 33
> no
> I can also remember of some errata on pci bus and you can not get full
> speed there
> also, i am not really sure one davinci can handle four channels.
> maybe a better way would be to have two davinci compressing/decompressing 2
> channels each, and put them behind a pci bridge. Seems more logical to me
> To have the davinci communicate you can use usb host/slave, but using my
> solution you may not need to do that
> Albert
>
> On 8/6/08, Tonald DL <[EMAIL PROTECTED]> wrote:
>>
>> Hi,
>>
>> To comunication two Danvinci, I thought normally use CAN interface. I
>> remember there is a document said the can was supposed to provide the
>> communication for multiple danvinci device.
>>
>>
>>
>>
>> 2008/8/5 Subbrathnam, Swaminathan <[EMAIL PROTECTED]>
>>
>>> Renjith,
>>>
>>>
>>>
>>> Just wanted to know whether you have considered any other options.
>>>
>>>
>>>
>>> What is your bandwidth requirement ? Is it say 1-20MB/s, >20MB/s
>>>
>>>
>>>
>>> Regards
>>>
>>> Swami
>>>
>>> PSP downloads at :
>>> http://software.ti.com/swcoe/intranet/reports/pds/PSP_releases.php
>>>
>>> Office : +91-80-25048629
>>> ------------------------------
>>>
>>> *From:* renjith kumar [mailto:[EMAIL PROTECTED]
>>> *Sent:* Tuesday, August 05, 2008 3:10 PM
>>> *To:* Subbrathnam, Swaminathan
>>> *Cc:* [email protected]
>>> *Subject:* Re: Davinci PCI module
>>>
>>>
>>>
>>>
>>> Is it some thing wrong in this ?
>>> Or any other suggestions ?
>>>
>>> I need more bandwidth, so thinking of using PCI.
>>> Does mvl-linux support driver for Host-davinci and target davinci.
>>> Any suggestion is appreciated ..
>>> Regards,
>>> Renjith
>>>
>>> On Tue, Aug 5, 2008 at 9:04 AM, renjith kumar <[EMAIL PROTECTED]>
>>> wrote:
>>>
>>>
>>> Hi swami,
>>>
>>> Many thanks for the mail.
>>> Let me tell you the requirement first.
>>> We are looking into, process 4 Video/Audio Channels (capture, encode,
>>> save,stream to Net, decode/display).
>>> So one Davinci may not be sufficient.
>>>
>>> So planning for 2 Davinci , whereas Slave (pci) Davinci chip will
>>> 1. Capture and encode 4 Videos (720x480) and 4 Audios, and encode to
>>> compression.
>>> 2. The Second (Host) Davinci will get it through PCI (as we thought as
>>> first plan) or Other Interface &
>>> 3 . The Host will save the streams, stream 4-AVs thru Network, Decode
>>> and Display 4-Ch at TV-Out with Quad mode.
>>> As we need more band width for the interface , initial thought was to use
>>> Davinci s PCI interface.
>>>
>>> have not think about USB yet. Which one does normally preferred.
>>>
>>> If it is PCI interconnection , does linux support both configuration for
>>> PCI at either side. ?
>>> If it is USB interface , does linux support this at either side ?
>>>
>>>
>>> Thanks and Regards,
>>> Renjith
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Many
>>>
>>>
>>>
>>> On Tue, Aug 5, 2008 at 8:21 AM, Subbrathnam, Swaminathan <
>>> [EMAIL PROTECTED]> wrote:
>>>
>>> Renjith,
>>>
>>>
>>>
>>> Is there any fundamental reason that you have chosen PCI as the means for
>>> communicating between the 2 DM6467's ?
>>>
>>>
>>>
>>> What are your needs w.r.t throughput, latency etc. in such a
>>> communication.
>>>
>>>
>>>
>>> Have you looked at using other means such as USB.
>>>
>>>
>>>
>>> swami
>>> ------------------------------
>>>
>>> *From:* davinci-linux-open-source-bounces+swami.iyer=ti.com@
>>> linux.davincidsp.com [davinci-linux-open-source-bounces+swami.iyer=
>>> [EMAIL PROTECTED] On Behalf Of renjith kumar [
>>> [EMAIL PROTECTED]
>>> *Sent:* Tuesday, August 05, 2008 6:19 AM
>>> *To:* [email protected]
>>> *Subject:* Davinci PCI module
>>>
>>>
>>> Hi ,
>>>
>>>
>>> I have a requirement on making 2 Davinci Chips (6467 x2), one for
>>> decoding purpose and the other for encoding multiple channels.
>>>
>>> Here out intension is to connect both the Chips with PCI interface , One
>>> as master and the other as slave. Have anybody done like this before ?
>>> What is the Driver configuration that we need to select in Linux ?
>>> Just selecting the Davinci PCI driver module for both device will do the
>>> needed.
>>> Or Is there special drivers we need to use for both separately ? Most of
>>> the Hardware Pins looks Bi-Directional, and is there any additional Glue
>>> Logic needs to be used for interconnecting the Slave and Master (Both in h/w
>>> and S/w) ?
>>> I am a newbie in this. ANY suggestions appreciated.
>>>
>>>
>>> --
>>> Thanks'n Regards,
>>> Renjith.
>>>
>>>
>>>
>>> --
>>> Thanks'n Regards,
>>> Renjith.
>>>
>>>
>>>
>>>
>>> --
>>> Thanks'n Regards,
>>> Renjith.
>>>
>>> _______________________________________________
>>> Davinci-linux-open-source mailing list
>>> [email protected]
>>> http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
>>>
>>>
>>
>>
>> --
>> -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>
>> Best Regards
>> Tonald DL
>> WebSite: http://dhcodec.quikstream.com.au/
>>
>>
>> _______________________________________________
>> Davinci-linux-open-source mailing list
>> [email protected]
>> http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
>>
>>
>
>
> --
> Albert Burbea
> Harishonim 8
> Ramat Gan 52502, Israel
> Tel/Fax + 972-3-7526016
> Mobile: +972-52-3541842
--
Thanks'n Regards,
Renjith.
_______________________________________________
Davinci-linux-open-source mailing list
[email protected]
http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
