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Original question:

TIDEP-01002: DRA711 custom board: VisionSDK earlyboot kernel panic

TIDEP-01002: linux CMA memory and VisionSDK reserved memory SR2_MEM

fanok
Expert 2400 points
Part Number: TIDEP-01002

hi all experts,

i am now confused about Linux kernel CMA and VisionSDK SR2_MEM.

what the different between linux kernel CMA memory and VisionSDK reserved memory SR2_MEM?

The definition of SR2_MEM in VisionSDK_UserGuide_MemoryMap.pdf as following:

SR2_MEM: Used only with VSDK Linux reserving memory for CMEM allocations (contiguous memory for Linux)

Does it not the same to CMA?

best regards!

  • 0
    TI__Mastermind 30480 points

    Hi Fanok,

    SR2_MEM is the shared memory reserved for all links running on different processing units like IPU, DSP, A15 etc for sharing the buffers created by each link.

    CMA is contiguous memory allocated/reserved  from linux for a specific reason where contigious memory is required.

    Thanks

    RamPrasad