Jetson TX2 Camera GPIOs for 3 cameras

Hi there,

Would like to get feedback on the following GPIO situation.

I would like to make a carrier board which houses 3 cameras.

For camera controls, ideally I would like to route the following signals to each camera.

  • RST_L
  • TRIGGER (just think of it as some random signal)

I was looking at three documents.

  • JETSON carrier board schematic.
  • Jetson_Camera_Module_Hardware_Design_Guide
  • Jetson TX2 OEM Product Design Guide

b The schematic for the JETSON carrier board has the following signals on the camera connector:[/b]
CAM0_RST_L (pin 96)
CAM1_RST_L (pin 92)
CAM2_RST (pin 98)

CAM0_PWDN (pin 93)
CAM1_PWDN (pin 90)
CAM2_PWDN (pin 96)

b However: on the “Jetson_Camera_Module_Hardware_Design_Guide”, on “Chapter 3 - JETSON CAMERA CONNECTOR PINOUT TABLE”…[/b]

Pins 96 & pins 98 are not documented.

b In “Jetson TX2 OEM Product Design Guide” pg 45 Table 48 - “Jetson TX2 Camera Miscellaneous Pin Descriptions”…[/b]

The signals for CAM2 are not included here.


So question is:

(Q1) Can I use pins 96 & 98 for GPIO?

(Q2) And can I set CAM#_PWDN as inputs instead of output?

hello cwz9000,

(Q1) Can I use pins 96 & 98 for GPIO?
please check tc358840 kernel drivers for example,

sources/kernel/kernel-4.4/drivers/media/i2c/tc358840.c

(Q2) And can I set CAM#_PWDN as inputs instead of output?
its default settings is output, you should customize this by configure this in the pinmux spreadsheet,
thanks