topic Re: question about AR0144 driver in i.MX Processors

question about AR0144 driver

xu_ji1 — Mon, 11 Nov 2019 01:05:53 GMT

Hello，

From doc AR0144 and ov9284 drivers for I.MX8QM/QXP. on community，about On imx8qm/qxp the data will be recieved as raw 16bit and the valid data bit start from bit[13] to LSB.

That means i.MX8 only can received 16 bit raw data? 12bit data can not support?

and when AR0144 gives 12bit data the other 4bit is filled by i.MX8 ISI or max96705?

0bxxdd_dddd_dddd_ddxx the 'x' means the filled data?

And about the tool vulkan-v4l2,when run it happened error:

error: XDG_RUNTIME_DIR not set in the environment.
vulkan-v4l2: /home/nxf47746/data/project/glfw/src/window.c:955: glfwSetWindowUserPointer: Assertion `window != NULL' failed.
Aborted (core dumped)

How to fixed it?

Thanks

Re: question about AR0144 driver

nxf47746 — Mon, 11 Nov 2019 01:41:15 GMT

i.MX8qm/qxp raw data type only support 16bit, 'x' will be zero filled by isi.
The tool depends on wayland, it is only used to preview the mono raw image, you can also write your own capturing program to preview the image.

Re: question about AR0144 driver

xu_ji1 — Mon, 11 Nov 2019 01:56:23 GMT

Thanks for reply,and from ov9284 patch that isi:

+ .name = "Y10",
+ .fourcc = V4L2_PIX_FMT_Y10,
+ .depth = { 16 },
+ .color = MXC_ISI_OUT_FMT_RAW16,
+ .memplanes = 1,
+ .colplanes = 1,
+ .mbus_code = MEDIA_BUS_FMT_Y10_1X10,

and driver is + max9286_data->format.code = MEDIA_BUS_FMT_Y10_1X10;

from ar0144 patch isi:

+ .name = "BYR2",
+ .fourcc = V4L2_PIX_FMT_SBGGR16,
+ .depth = { 16 },
+ .color = MXC_ISI_OUT_FMT_RAW16,
+ .memplanes = 1,
+ .colplanes = 1,
+ .mbus_code = MEDIA_BUS_FMT_SBGGR16_1X16,

and driver is + max9286_data->format.code = MEDIA_BUS_FMT_Y12_1X12;

why ar0144 is V4L2_PIX_FMT_SBGGR16 not V4L2_PIX_FMT_Y10 ?

Thanks

Re: question about AR0144 driver

nxf47746 — Mon, 11 Nov 2019 02:02:01 GMT

V4L2_PIX_FMT_SBGGR16 should be modified to V4L2_PIX_FMT_Y12, I will update the patch later.

Re: question about AR0144 driver

xu_ji1 — Mon, 11 Nov 2019 03:31:52 GMT

hello,

does 96705 cross bar set must need?what is the function?

If want to get correct data all the 9286 and 96705 register config need from the patch driver?

Thanks

Re: question about AR0144 driver

nxf47746 — Mon, 11 Nov 2019 06:47:17 GMT

cross bar is not mandatory, as the document mentioned, it is only needed when the data bit is reversed.

The register config in the patch driver is just for reference, it's working on my platform, the register should be configured according to the "dbl bws PXL_CRC/edc hven hibw lccen him" on your platform.

Re: question about AR0144 driver

xu_ji1 — Mon, 11 Nov 2019 06:58:04 GMT

hello,

The platform means i.MX8QXP or i.MX8QM or sensor module?

How to make clear about "dbl bws PXL_CRC/edc hven hibw lccen him"?

thanks

Re: question about AR0144 driver

nxf47746 — Mon, 11 Nov 2019 07:02:12 GMT

platform means 8qxp/qm and sensor module.

for the dbl bws... please see the doc of max9286 and max96705.

Re: question about AR0144 driver

xu_ji1 — Sat, 30 Nov 2019 02:40:38 GMT

Which AR0144 sensor module of producer that you used?