sample_embedding_folder2/0822782.txt

Ticket Name: Linux/TDA2SX: About the TDA2 memory adjustment on Dual OS (Linux & RTOS)

Query Text:
Part Number: TDA2SX Tool/software: Linux Our system does not have enough shared memory to do more algorithm, So we want to adjust the memory block position & size for increasing the SR1 size. After reading the URL http://processors.wiki.ti.com/index.php/VSDK/VisionSDK_UserGuide_MemoryMap#Memory_Map_of_the_Application, our adjustments are still fail. Even we only move the IPU1 & IPU2 position & size. ( not out of 0xA0000000 ) Could you help us ? Thank you very much. Regards, Eten

Responses:
Hi Eten, If you don't intend M4 to perform a CPU access and all operations happen using DMA, you can add a carveout between 0xA0000000 - 0xC0000000 and use this as shared memory (refer the dra7-evm-infoadas.dts in kernel on how to add a reserved memory node). You then need to add the corresponding entry OSA_memInit to mmap this reserved region to userspace. Regards Shravan