Rock 5B PCIe 4x1 Bifurcation Configuration Guide

[Spartan86]

Hi,

I intend to do a 4x1 PCIe bifurcation configuration on my Rock 5B. Is there any English version documentation guide on the PCIe bifucation or PCIe developers guide?

Regards,
Spartan86

[Dante4]

Hello, tl;dr
As far as we know you can’t do x1x1x1x1

Long version:

Radxa M.2 E key to SATA breakout card

Without pcie switch, two 2x 2-lane PCIe is possible on current 5B. Nice work indeed. @Semi

Radxa M.2 E key to SATA breakout card

Radxa used available clocks for different peripheral. Rk3588 supports 4, 2-2, 2-1-1, 1-1-1-1, but Rock5b only 4, 2-2. (i may be wrong)