It is very strange,I think it is because the DM6446 EVM has a default 256M bytes DDR,and my dm355 board has only 128M.This my result in there is no so much continous memory when the VPBE intializing.
2008-09-28 Pavel Han Oplinx Co.,Ltd Address:Hanggang Fuchun Business Mansion 2116# Futian, Shenzhen 518041,PRC Tel: (086)0755-88359865 Website:www.oplinx.com.cn E-mail: [EMAIL PROTECTED] 发件人： Brad Bitterman 发送时间： 2008-09-27 21:06:02 收件人： pavelhan 抄送： davinci-linux-open-source 主题： Re: Can't allocate DMA memory greater than 4M in the dm355 vpbe driver I'm using the DM6446 but the driver is mostly the same. I can allocate 5MBytes with no problems. Are you using the EVM with the default memory map? - Brad On Sep 27, 2008, at 2:06 AM, pavelhan wrote: Hi,ALL I want to output HD signal(I means 720P) using dm355 vpbe Ycc16 interface.The default VPBE resolution is 720x480 or 720x576,so I need to change this resolution to be 1280x720,and this will result a problem:I can't allocate enough DMA memory in the dm355 vpbe driver.That is I can't allocate DMA memory greater than 4M,but If I want use 720P in the vpbe,I need about 6M for one window.Is the allocation function dma_alloc_coherent limit(In the drivers/video/dm355fb.c vpbe_mem_alloc_max function) the memory to be samller than 4M?So what should I do next? My sdk version is 1_30_00_40. Any help will be appreciated! 2008-09-27 Pavel Han Oplinx Co.,Ltd Address:Hanggang Fuchun Business Mansion 2116# Futian, Shenzhen 518041,PRC Tel: (086)0755-88359865 Website:www.oplinx.com.cn E-mail: [EMAIL PROTECTED] _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source __________ NOD32 3470 (20080925) Information __________ This message was checked by NOD32 antivirus system. http://www.nod32cn.com
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