SD card on Jetson Nano

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

Hi,

I wanted to know the mechanism in Jetson modules for SD card, When CD pin is triggered then the driver gets loaded or driver will be loaded already and it detects SD card once CD is triggered? is it possible to trigger it manually with software?

We wanted our carrier board to be used with a daughter board. but on the daughter board SDIO CD signal is not routed this is the issue we are facing.

3

The driver will be loaded already and parse the cd-gpios from the device tree. Once the gpio has the input, it will trigger the driver to do the next steps.

4

Thanks for the info, is it possible to trigger it manually with software? for our use case - We wanted our carrier board to be used with a daughter board. but on the daughter board SDIO CD signal is not routed this is the issue we are facing.

5

You can check and learn the usage of gpio sysfs. But I would still suggest you to fix your hardware design.

6

Sure, Thanks for that.