On 01/30/2017 04:45 PM, Russell King - ARM Linux wrote:
Hi, Trying this driver with an imx219 camera (which works with Philipp's driver) results in not much happening... no /dev/media* node for it, no subdevs, no nothing. No clues as to what's missing either. Only messages from imx-media are from registering the various subdevs. [ 37.444877] imx-media: Registered subdev imx6-mipi-csi2 [ 37.444973] imx-media: Registered subdev imx219 0-0010 [ 38.868740] imx-media: Registered subdev ipu1_ic_prpenc [ 38.869265] imx-media: Registered subdev ipu1_ic_prpvf [ 38.869425] imx-media: Registered subdev ipu1_ic_pp0 [ 38.870086] imx-media: Registered subdev ipu1_ic_pp1 [ 38.871510] imx-media: Registered subdev ipu2_ic_prpenc [ 38.871743] imx-media: Registered subdev ipu1_smfc0 [ 38.873043] imx-media: Registered subdev ipu1_smfc1 [ 38.873225] imx-media: Registered subdev ipu2_ic_prpvf [ 38.875027] imx-media: Registered subdev ipu2_smfc0 [ 38.875320] imx-media: Registered subdev ipu2_ic_pp0 [ 38.877148] imx-media: Registered subdev ipu2_smfc1 [ 38.877436] imx-media: Registered subdev ipu2_ic_pp1 [ 38.932089] imx-media: Registered subdev camif0 [ 38.956538] imx-media: Registered subdev camif1 [ 38.959148] imx-media: Registered subdev camif2 [ 38.964353] imx-media: Registered subdev camif3 [ 206.502077] imx-media: Registered subdev ipu1_csi0 [ 206.503304] imx-media: Registered subdev ipu1_csi1 [ 206.503814] imx-media: Registered subdev ipu2_csi0 [ 206.504281] imx-media: Registered subdev ipu2_csi1 I also get: [ 37.200072] imx6-mipi-csi2: data lanes: 2 [ 37.200077] imx6-mipi-csi2: flags: 0x00000200 and from what I can see, all modules from drivers/staging/media/imx/ are loaded (had to load imx-csi by hand because of the brokenness in the drivers/gpu/ipu code attaching an device_node pointer after registering the platform device, which changes what userspace sees in the modalias file.) Any clues at what to look at?
Hi Russell, I'm not familiar with IMX219, can you send me the source for the imx219 subdev? I don't see it in 4.10-rc1. I'm also having trouble finding a datasheet for it, but from what I've read, it has a MIPI CSI-2 interface. It should work fine as long as it presents a single source pad, registers asynchronously, and sets its entity function to MEDIA_ENT_F_CAM_SENSOR. Since I see it was registered asynchronously from the above, it must have been added to the device tree. But given that there is no /dev/media? node, the media driver is probably waiting for another subdev to register, I don't know what that would be. Can you send me the full patch on top of the v3 driver and I'll try to find what's missing. Edit: I see a subdev that is missing: the video mux. Did you enable CONFIG_VIDEO_MULTIPLEXER? Finally, what platform does this IMX219 sensor module plug into? Steve -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
