Re: [PATCH 6/6] arm64: dts: qcom: sdm845-db845c-navigation-mezzanine: Add cma heap for libcamera softisp support

[Bryan O'Donoghue]

On 01/11/2024 15:18, Kieran Bingham wrote:
> Presently with SoftISP being CPU only - physically contiguous memory is
> not required.

Yes, I've misinterpreted what we discussed, udmabuf should be enough on 
qcom.

> Bryan, will this still be true when you have a GPU based ISP ? Will that
> require physically contiguous memory ? Or will the mapping into the GPU
> handle any required translations?

I believe it should be fine because we do glTexImage2D on the way in ATM 
and have support for eglCreateImageKHR(.., .., .., .., .., 
  EGL_DMA_BUF_PLANE0_FD_EXT, dma_fd); but in either case phys contig 
doesn't matter.

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bod