brcmfmac firmware regression. #7186
Description
Describe the bug
Hope this is the right forum to report this issue.
There's been a regression in the wifi firmware between these versions
Firmware: BCM4345/6 wl0: Apr 15 2021 03:03:20 version 7.45.234 (4ca95bb CY) FWID 01-996384e2
and
Firmware: BCM4345/6 wl0: Aug 29 2023 01:47:08 version 7.45.265 (28bca26 CY) FWID 01-b677b91b
Some valid 5GHz wifi channels have become unusable with the newer firmware. (I have tested/confirmed with channel 165 but other adjacent channels are affected too.)
The last set of non-DFS 5Ghz channels are shown in the output of iw reg get and iw phy phy0 channels but iw dev wlan0 scan doesn't show any AP/SSID on channel 165 with the new firmware.
# iw reg get
global
country IN: DFS-UNSET
(2402 - 2482 @ 40), (N/A, 30), (N/A)
(5150 - 5250 @ 80), (N/A, 30), (N/A)
(5250 - 5350 @ 80), (N/A, 24), (0 ms), DFS
(5470 - 5725 @ 160), (N/A, 24), (0 ms), DFS
(5725 - 5875 @ 80), (N/A, 30), (N/A)
phy#0
country 99: DFS-UNSET
(2402 - 2482 @ 40), (6, 20), (N/A)
(2474 - 2494 @ 20), (6, 20), (N/A)
(5140 - 5360 @ 160), (6, 20), (N/A)
(5460 - 5860 @ 160), (6, 20), (N/A)
# iw phy phy0 channels
----snip---
* 5745 MHz [149]
Maximum TX power: 20.0 dBm
Channel widths: 20MHz HT40+ VHT80
* 5765 MHz [153]
Maximum TX power: 20.0 dBm
Channel widths: 20MHz HT40- HT40+ VHT80
* 5785 MHz [157]
Maximum TX power: 20.0 dBm
Channel widths: 20MHz HT40- HT40+ VHT80
* 5805 MHz [161]
Maximum TX power: 20.0 dBm
Channel widths: 20MHz HT40- HT40+ VHT80
* 5825 MHz [165]
Maximum TX power: 20.0 dBm
Channel widths: 20MHz HT40- VHT80
iw dev wlan0 scan |egrep 'primary channel: 165' returns no output with the new firmware.
But after I manually downgraded the firmware to the older version... it started detecting them.
[ 20.094035] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Aug 29 2023 01:47:08 version 7.45.265 (28bca26 CY) FWID 01-b677b91b
[ 914.033341] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Apr 15 2021 03:03:20 version 7.45.234 (4ca95bb CY) FWID 01-996384e2
# iw dev wlan0 scan |egrep 'primary channel: 165'
* primary channel: 165
* primary channel: 165
Steps to reproduce the behaviour
See above.
Device (s)
Raspberry Pi 3 Mod. B+
System
This behaviour with the new firmware exists in both Libreelec 12.2 (kernel 6.12.56) and Alpine Linux 3.23.2 (kernel 6.12.60-0-rpi) on Raspberry Pi 3B+.
Logs
No response
Additional context
No response