topic [IMX8MP][DWE] Dewarp Engine clarification in i.MX Processors

[IMX8MP][DWE] Dewarp Engine clarification

ms_emsys — Wed, 18 Aug 2021 10:19:01 GMT

From IMX8MPRM, Rev. 1, 06/2021:

The Dewarp Engine cannot be used as a standalone module.

1. Is this a hardware limitation (shared clock control etc)?

2. Is this a software limitation because the userspace stack (isp-imx) does not support this usecase?

2. Would it be possitble to use the isi_0 or isp_0 to do the format conversion from RAW8 GRAYSCALE into a format compatible with the dwe?

Re: [IMX8MP][DWE] Dewarp Engine clarification

joanxie — Sat, 28 Aug 2021 03:20:09 GMT

I have mailed to you and give you detailed answer, pls check your mailbox

Re: [IMX8MP][DWE] Dewarp Engine clarification

malik_cisse — Fri, 01 Apr 2022 13:58:31 GMT

From iMX8MP_CAMERA_DISPLAY_GUIDE.pdf Figure 17 (see below). it appears that dewarp output is a separate output from ISP and one should be able to access it in parallel to accessing ISP output on /dev/video0 device node.
Is this understanding correct? If yes, how can I access Dewarp output? I have activated Dewarp but I only see /dev/video0 device node.

Any usage example of Dewarp will be welcome.
THX

Re: [IMX8MP][DWE] Dewarp Engine clarification

jeroenvanderlaa — Tue, 20 Jan 2026 10:06:19 GMT

I would also like to use the normal and dewarped video simultaneously. Can You help me with this issue?