Hi Folks, I'm seeing a regression in the brcmfmac driver which appeared in the 6.1 dev cycle, I didn't pick it up until around rc8 but with deadlines and travel I've not had a chance to bisect it but wanted to report it to make people aware. I've seen in on a number of devices with brcmfmac wifi over SDIO including at least the Raspberry Pi (zero2w, rpi4, rpi400, rpi3B+) and other devices like the Rock960, Pinebook Pro etc. A quick look at brcmfmac shows arounf 26 changes for 6.1 and it seems like it's an issue around firmware loading where it looks for a device specific firmware but doesn't fall back to loading the more generic one, or tries to load one ending in .txt, but then doesn't load the NVRAM. Anyway I wanted to report it as atm I haven't had time to actually debug/bisect it more. a dmesg snippet for the RPi3B+ is: [ 24.541576] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6 [ 24.551460] usbcore: registered new interface driver brcmfmac [ 24.559669] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43455-sdio.raspberrypi,3-model-b-plus-Raspberry Pi 3 Model B Plus Rev 1.3.bin failed with error -2 [ 24.693853] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43455-sdio.txt failed with error -2 [ 25.717596] brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50 Regards, Peter