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=ti.com >> @linux.davincidsp.com] 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
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