I missed one information. Did you set the bootargs correctly ? The jumper setting is read by the bootloader and is updated in the videostd environment variable. Now for the driver to use this variable, bootargs need to have the following settings.
video=dm355fb:output=\$(videostd) Now based on Jumper settings, following will be passed to kernel (and to driver) video=dm355fb:output=pal or video=dm355fb:output=ntsc depending on the jumper settings ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Karicheri, Muralidharan Sent: Wednesday, March 26, 2008 12:56 PM To: Jammy Dane; Diego Dompe Cc: davinci-linux-open-source@linux.davincidsp.com Subject: RE: PAL and NTSC problem on dm355 It means, the linux driver is detecting it as PAL, but application is trying to select a NTSC camera. Check the demo code to see why it is selecting a NTSC camera and fix it. ________________________________ From: Jammy Dane [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 26, 2008 12:02 PM To: Diego Dompe; Karicheri, Muralidharan Cc: davinci-linux-open-source@linux.davincidsp.com Subject: Re: PAL and NTSC problem on dm355 Hi, what problem i mentioned is that when i connect the pal camera to the evm and run the encode or encodedecode demo supplied by the DVSDK, it said: PAL camera connect but NTSC camera selected. it did not work though i have set the J1 to select the pal camera. what 's wrong with it ? can you say more? Regards Jammy ----- Original Message ----- From: Karicheri, Muralidharan <mailto:[EMAIL PROTECTED]> To: Diego Dompe <mailto:[EMAIL PROTECTED]> ; Jammy Dane <mailto:[EMAIL PROTECTED]> Cc: davinci-linux-open-source@linux.davincidsp.com Sent: Wednesday, March 26, 2008 9:24 PM Subject: RE: PAL and NTSC problem on dm355 Hi, TVP5146 has autodetect feature. To turn it on, you need to invoke a S_STD ioctl to the V4L2 capture driver (choose TVP5146 as the capture driver in bootargs) which will detect PAL standard if you feed a PAL source output to the composite/S-video input of the tvp. Hope this helps. Murali From: [EMAIL PROTECTED] om [mailto:[EMAIL PROTECTED] ncidsp.com] On Behalf Of Diego Dompe Sent: Wednesday, March 26, 2008 8:36 AM To: Jammy Dane Cc: davinci-linux-open-source@linux.davincidsp.com Subject: Re: PAL and NTSC problem on dm355 Hi, The framebuffer driver should support PAL output (but I don't have hardware to verify it). Could you elaborate on the problem you have? Do you mean programming the video capture driver to capture on PAL? The video capture driver works over raw YUV data received on digital format from the video codec used on the DM355 EVM (TVP5146), so its the TVP how is responsible to encode from PAL signal, so is probably a matter of performing an ioctl over the video driver to ask the driver to signal the CODEC the PAL format over the i2c. Let me know if this is what you are looking for, I'm not at my desktop right now so I can't grep on the files. Diego Dompe RidgeRun Engineering On Mar 26, 2008, at 6:12 AM, Jammy Dane wrote: Hi,all I am developing the dm355 evm, and as u knows, the dm355 evm does not support pal camera, how should we do for supporting the pal standard. can u give me some advice? thanks Jammy Dane _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
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