Banana Pi BPI-RV2 - Dual Band (B key WiFi)

Banana PI RISC-V Design BPI-RV2 (Siflower SF21H8898)
1

Hi,

if you want to use dual band WiFi with the BPI-RV2 you can use a second WiFi module in the B key slot. It works using this adapter:

image

Tested with AC and N Atheros WiFi, 5 antennas

# lspci
0000:00:00.0 PCI bridge: Device 1a0a:abcd (rev 01)
0000:01:00.0 Network controller: Qualcomm Atheros QCA986x/988x 802.11ac Wireless Network Adapter
0001:00:00.0 PCI bridge: Device 1a0a:abcd (rev 01)
0001:01:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)

Hope that helps anyone!

2

Hi! Unfortunately I was unable to create a separate topic, so I had to answer here.

Banana Pi BPI-RV2 Some mPCIE cards not detected by board

This effect enabled on original firmware on snapshot OpenWrt Image an custom builds. I have more mPCIe cards, but work only somes.

Cards works and detect by board:

Realtek RTL8111 Wired GBps network adapter
Atheros AR9435 802.11b/g/n wireless network adapter
MediaTek MT7612 802.11b/g/n/ac wireless network adapter

Cards not works and not detect by board:

Wallys DR7915 (MediaTek MT7915) 802.11b/g/n/ac/ax DBDC network adapter
Banana BPI-MT7615 (MediaTek MT7615) 802.11b/g/n/ac network adapter

Not working cards perfectly work on another boards: MT7621 with PCIe, Marwell Feroceon 88FR131 and x86 boards. What different PCB desigh RV2 board or software bug?

If possible, please separate this message into another discussion. Thanks.

3

Maybe its due to power draw ? Some cards have higher power requirement than others. Some issues were observed with certain NVMe because of that on the B key slot. I suppose the same may apply to the mPCIE slot, but not sure. The mPCIE cards I tested all worked fine.

Make sure your OpenWrt build has the right firmware / drivers enabled !

4

Are there any improvements in the situation over time?

5

I want to share my experience with Wi-Fi chips on the Banana Pi BPI-RV2, in case it is useful to someone else. I used OpenWRT 25.12.5 with Linux kernel 6.12.94.

Did NOT work: MediaTek MT7925, via Mini PCIe. The device could be seen in lsusb, but did not show up in lspci. There was no error in dmesg. The log was the same as for the other (currently empty) M.2 slot, meaning that I did not have any useful logs to debug.

Worked: MediaTek MT7612E, via Mini PCIe.