LayerscapeのトピックM.2 SSD in LS1046 custom board

M.2 SSD in LS1046 custom board

Ellu24 — Mon, 13 Feb 2023 23:53:12 GMT

I am designing a hardware using LS1046. In our design, we are planning to use M.2 SSD PCIe3.0x4 instead of eMMC or SDcard. We are planning to connect M.2 SSD using USB -PCIe bridge. My questions are:

1) Can I use M.2 SSD instead of eMMC or SDcard and will the processor support the same?

2) Is it compatible for the processor to use the USB -PCIe bridge?

Thanking you in advance

Re: M.2 SSD in LS1046 custom board

mrudangshelat-13 — Mon, 20 Feb 2023 03:42:26 GMT

Hi @Ellu24,

LS1046A can boot from SD/eMMC. It cannot boot from SSD. So if you use SSD, you need to use some other boot source.

You are planning to use USB-PCIe bridge. I'm not sure why you do not plan to connect M.2 SSD directly to PCIe controller of LS1046A. This will give you very high throughput.

The USB controller of LS1046A complies with USB specification rev 3.0. You can plug-in anything that complies to the specification.

Regards,
Mrudang

Re: M.2 SSD in LS1046 custom board

Ellu24 — Tue, 21 Feb 2023 23:01:59 GMT

Thank you very much for your reply.