Rock3 compute Module WiFi Not work

#1

I downloaded kernel version 4.19.193 from the link

https://github.com/radxa/kernel/tree/stable-4.19-rock3

recompiled the kernel, the wifi no longer works

dmesg | grep brcm
[ 3.117186] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 3.122172] brcmfmac mmc2:0001:1: Direct firmware load for brcm/brcmfmac43455-sdio.bin failed with error -2
[ 4.146777] brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50
what is missing?

#2

something to check:
1.which is your using image version?
2.is it ok before change the kernel?
3.what the wifi module on the cm3?

#3

1:kernel version 4.19.193
2:yes, OK
3:model is : AW-CM256SM

#4

Where did you download the image

#5

I have not downloaded image, but recompiled the kernel