How to enable csi camera mclk?

Robotics & Edge Computing Jetson & Embedded Systems Jetson TK1
1

Hi everyone

I have a CSI-2 4-lane camera module, currently I can manually

  1. enable ldo voltage: +1.8V_RUN_CAM (LDO_1), +2.8V_RUN_CAM (LDO_4), +1.05V_RUN_CAM_REAR (LDO7)
  2. use i2cdetect to check camera connection
  3. pull up reset pin
    but I don’t know how to enable mclk, I still studying imx135 driver for reference from released r21.3 source.

Does anyone can give me some idea?
Thanks.

2

It seem to setting default mclk in pinmux dtsi file.
But it still not work after modify cam_mclk_pcc0 content.
So I checked some gpio pin like GPIO_PBB0(CAM2_MCLK) by GPIO Tutorial, the gpio pin always 0, but GPIO_PH1 and GPIO_PU0 can pull up. It’s strange!

3

Hi,

Were you able to resolve this problem? I am having the same problem with Cam2_mclk

-David

4

https://devtalk.nvidia.com/default/topic/936727/about-csi-camera-master-clock/?offset=7#4942146