M.2 SSD with Custom Carrier board

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hi,

I want to connect a M.2 (key m) PCIe SSD to our custom carrier board, but the TX2 doesn’t seem to see the drive. The kernel has “CONFIG_BLK_DEV_NVME” set (“CONFIG_NVMEM” is not set but I don’t think that’s relevant). The custom hardware interface is pretty simple. The only components are 3 pull-up resistors and a 32.7kHz crystal, and obviously the connector itself. We verified the soldering and polarity of the crystal so it doesn’t seem to be a hardware issue. At the same time with the same kernel config the SSD drivers work on the Nvidia Carrier so I don’t believe is a kernel configuration issue either. These M.2 SSDs seem to be just plug and play on the Nvidia Carrier, but do I have to change something in the device-tree to get this to work? Or am I just missing something else?

Thanks

2

Hi, did you check the table 15 in OEM DG for corresponding lane mapping configuration? Which config do you choose?

3

It turns out the hardware engineer didn’t crossover RX and TX. So that’s the first thing that needs to be fixed. Hopefully it’ll just work after that fix.

4

Hello,

Did you ever get this to work? I have been trying to accomplish the same thing for months.