Re: MIPI DSI driver for imx8mn in linux-fslc

Fabio Estevam

Hi Peter,

On Fri, Mar 26, 2021 at 11:34 AM Peter Bergin <> wrote:


I did a try to bring up mainline-bsp on a i.Mx8mn EVK (imx8mn-ddr4-evk)
to try graphics. My EVK has a IMX-MIPI-HDMI adapter attached. When
booting this setup with mainline-bsp (Linux imx8mn-ddr4-evk
5.10.25+g07073b4e6808) I get no drm device in the system. Digging in to
this I can not find any mips-dsi on the aips4 bus in the device-tree and
I can not find any driver for it in the kernel tree for linux-fslc
(branch 5.10.x+fslc).

In linux-imx there is a driver in
drivers/gpu/drm/imx/sec_mipi_dsim-imx.c that defines '.compatible =
"fsl,imx8mn-mipi-dsim",' I can not find its counterpart in linux-fslc.
My conclusion at the moment is that MIPI-DSI support for imx8mn is not
ready upstream. Is this a correct conclusion or have I missed something?
Yes, you are correct. There is no i.MX8MM MIPI DSI support in mainline yet.

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