Comment # 1 on bug 1201112 from Michal Suchanek

Working:

[   10.820944] brcmfmac: F1 signature read @0x18000000=0x15294345
[   10.832139] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43456-sdio
for chip BCM4345/9
[   10.838431] usbcore: registered new interface driver brcmfmac
[   10.842063] brcmfmac mmc0:0001:1: Direct firmware load for
brcm/brcmfmac43456-sdio.pine64,pinebook-pro.bin failed with error -2
[   10.845575] Bluetooth: hci0: BCM4345C5 'brcm/BCM4345C5.hcd' Patch
[   10.871870] brcmfmac mmc0:0001:1: Direct firmware load for
brcm/brcmfmac43456-sdio.pine64,pinebook-pro.txt failed with error -2
[   10.991404] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43456-sdio
for chip BCM4345/9
[   11.004341] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/9 wl0: Feb 11
2020 11:54:51 version 7.45.96.61 (be7af2d@shgit) (r745790)

TW:

[   37.332597] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43456-sdio
for chip BCM4345/9
[   37.333058] usbcore: registered new interface driver brcmfmac
[   37.414714] brcmfmac mmc3:0001:1: Direct firmware load for
brcm/brcmfmac43456-sdio.pine64,pinebook-pro.bin failed with error -2
[   37.440457] brcmfmac mmc3:0001:1: Direct firmware load for
brcm/brcmfmac43456-sdio.bin failed with error -2
[   37.807740] Bluetooth: hci0: BCM: 'brcm/BCM4345C5.hcd'
[   37.809426] Bluetooth: hci0: BCM: 'brcm/BCM.hcd'
[   38.442070] brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl
0x50

looks like the firmware is missing