Hi Tim,
On 09/15/2017 02:26 PM, Tim Harvey wrote:
Greetings,
I'm testing Linux master built with imx_v6_v7_defconfig on a GW51xx
which has an ADV7180 analog video decoder and am not seeing the imx6
/dev/media node get created:
[ 0.000000] OF: fdt: Machine model: Gateworks Ventana i.MX6
Dual/Quad GW51XX
...
[ 6.089039] imx-media: Registered subdev ipu1_vdic
[ 6.094505] imx-media: Registered subdev ipu2_vdic
[ 6.099851] imx-media: Registered subdev ipu1_ic_prp
[ 6.105074] imx-media: Registered subdev ipu1_ic_prpenc
[ 6.111346] ipu1_ic_prpenc: Registered ipu1_ic_prpenc capture as
/dev/video0
[ 6.119007] imx-media: Registered subdev ipu1_ic_prpvf
[ 6.124733] ipu1_ic_prpvf: Registered ipu1_ic_prpvf capture as
/dev/video1
[ 6.131867] imx-media: Registered subdev ipu2_ic_prp
[ 6.137125] imx-media: Registered subdev ipu2_ic_prpenc
[ 6.142921] ipu2_ic_prpenc: Registered ipu2_ic_prpenc capture as
/dev/video2
[ 6.150226] imx-media: Registered subdev ipu2_ic_prpvf
[ 6.155934] ipu2_ic_prpvf: Registered ipu2_ic_prpvf capture as
/dev/video3
[ 6.164011] imx-media: Registered subdev ipu1_csi0
[ 6.169768] ipu1_csi0: Registered ipu1_csi0 capture as /dev/video4
[ 6.176281] imx-media: Registered subdev ipu1_csi1
[ 6.181681] ipu1_csi1: Registered ipu1_csi1 capture as /dev/video5
[ 6.188189] imx-media: Registered subdev ipu2_csi0
[ 6.193680] ipu2_csi0: Registered ipu2_csi0 capture as /dev/video6
[ 6.200108] imx-media: Registered subdev ipu2_csi1
[ 6.205577] ipu2_csi1: Registered ipu2_csi1 capture as /dev/video7
...
[ 96.981117] adv7180 2-0020: chip found @ 0x20 (21a8000.i2c)
[ 97.019674] imx-media: Registered subdev adv7180 2-0020
[ 97.019712] imx-media capture-subsystem: Entity type for entity
adv7180 2-0020 was not initialized!
I suspect the failure of the adv7180 is causing the issue. Steve
mentioned some time ago that this was an error that needed to be fixed
upstream but I'm not clear if that is still the case.
That does need fixing but is not the cause.
I haven't looked at IMX media drivers since they were accepted to
mainline a few months back. Perhaps I'm simply forgetting to enable
something in the kernel that imx_v6_v7_defconfig doesn't turn on?
Yes, it looks like you are missing the video-mux. Enable CONFIG_VIDEO_MUX
and CONFIG_MUX_MMIO.
Steve
