Greetings everyone, I'm running Linux 4.14.31 on an IMX6 QuadPlus based Phytec board (PCM-058). I have connected an mt9p031 sensor to ipu1_csi0. The problem is that I am not seeing the /dev/media0 node. I have already read the fix mentioned in a previous discussion: https://www.spinics.net/lists/linux-media/msg121965.html and that does not seem to be the problem in my case as I do get the "ipu1_csi0_mux" registered. Running a grep on dmesg I get: [ 3.235383] imx-media: Registered subdev ipu1_vdic [ 3.241134] imx-media: Registered subdev ipu2_vdic [ 3.246830] imx-media: Registered subdev ipu1_ic_prp [ 3.252115] imx-media: Registered subdev ipu1_ic_prpenc [ 3.266991] imx-media: Registered subdev ipu1_ic_prpvf [ 3.280228] imx-media: Registered subdev ipu2_ic_prp [ 3.285580] imx-media: Registered subdev ipu2_ic_prpenc [ 3.299335] imx-media: Registered subdev ipu2_ic_prpvf [ 3.350034] imx-media: Registered subdev ipu1_csi0 [ 3.363017] imx-media: Registered subdev ipu1_csi1 [ 3.375523] imx-media: Registered subdev ipu2_csi0 [ 3.388615] imx-media: Registered subdev ipu2_csi1 [ 3.560351] imx-media: Registered subdev ipu1_csi0_mux [ 3.566151] imx-media: Registered subdev ipu2_csi1_mux [ 10.525497] imx-media: Registered subdev mt9p031 0-0048 [ 10.530816] imx-media capture-subsystem: Entity type for entity mt9p031 0-0048 was not initialized! [ 10.569201] mt9p031 0-0048: MT9P031 detected at address 0x48 [ 10.582895] imx-media: Registered subdev mt9p031 0-005d [ 10.588335] imx-media capture-subsystem: Entity type for entity mt9p031 0-005d was not initialized! [ 10.618795] mt9p031 0-005d: MT9P031 not detected, wrong version 0xfffffffa Also my config does appear to have the required options activated; running "zcat /proc/config.gz | egrep 'VIDEO_MUX|MUX_MMIO|VIDEO_IMX'" I get: # CONFIG_MDIO_BUS_MUX_MMIOREG is not set CONFIG_VIDEO_MUX=y CONFIG_VIDEO_IMX_VDOA=m CONFIG_VIDEO_IMX_MEDIA=y CONFIG_VIDEO_IMX_CSI=y CONFIG_MUX_MMIO=y I would really appreciate if anyone could help me trying to find out what went wrong and why the /dev/media0 node is not showing up. Many thanks and best regards, Ibtsam Haq
