ov13850 address

acidpero

I refer to here
https://drive.google.com/drive/f ... aXNTOHIxSDRGOFV4RDA

and here
https://github.com/rockchip-linu ... 9-firefly-linux.dts

1. 
   
2. ...
   
3. camera0: ov13850@10 {
   
4.                 status = "okay";
   
5.                 compatible = "omnivision,ov13850-v4l2-i2c-subdev";
   
6.                 reg = < 0x10 >;
   
7.                 device_type = "v4l2-i2c-subdev";
   
8. ...
   

Copy the code

According to the reference,
0x20 or 0x6C is used, and the camera address in dts is defined as 0x10.

how can it be work?

penguin

In my experience, if the SCCB_ID is 0x20, the i2c address is SCCB_ID / 2 = 0x10.

acidpero

penguin Posted at 12/29/2018 08:54
In my experience, if the SCCB_ID is 0x20, the i2c address is SCCB_ID / 2 = 0x10.

Happy new year and thanks for your reply

Every time I analyze this product, I feel like fall into the maze.
why address divided by 2?

penguin

SCCB is different from i2c. I do not dwell deep into it.

In case you need, here's the spec I find:

http://www4.cs.umanitoba.ca/~jac ... ingList/ov-sccb.pdf

The divided by 2 is from experience. Hope you find the answer in the doc.

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