[REGRESSION][BISECTED] wifi broken on pinebook pro

[Jan Palus]

WiFi no longer works on Pinebook Pro after upgrade to kernel 6.18. It
appears firmware fails to load:

...
mmc_host mmc0: card is non-removable.
mmc_host mmc0: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
Bluetooth: hci0: BCM: features 0x0f
Bluetooth: hci0: BCM4345C5 Ampak_CL1 UART 37.4 MHz BT 5.0 [Version: Version: 0039.0089]
Bluetooth: hci0: BCM4345C5 (003.006.006) build 0089
mmc_host mmc0: Bus speed (slot 0) = 148500000Hz (slot req 150000000Hz, actual 148500000HZ div = 0)
dwmmc_rockchip fe310000.mmc: Successfully tuned phase to 55
mmc0: new UHS-I speed SDR104 SDIO card at address 0001
brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43456-sdio for chip BCM4345/9
usbcore: registered new interface driver brcmfmac
brcmfmac mmc0:0001:1: Direct firmware load for brcm/brcmfmac43456-sdio.pine64,pinebook-pro.bin failed with error -2
brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
ieee80211 phy0: brcmf_bus_started: failed: -110
ieee80211 phy0: brcmf_attach: dongle is not responding: err=-110
brcmfmac: brcmf_sdio_firmware_callback: brcmf_attach failed

compared to 6.17 instead of last 4 lines with errors there's single one
with info about loaded firmware:

brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/9 wl0: May 14 2020 17:26:08 version 7.84.17.1 (r871554) FWID 01-3d9e1d87

Bisected to:

6d54d935062e2d4a7d3f779ceb9eeff108d0535d is the first new commit
commit 6d54d935062e2d4a7d3f779ceb9eeff108d0535d (HEAD)
Author: Peter Robinson <pbrobinson at gmail.com>
Date:   Wed Aug 27 16:30:37 2025

    arm64: dts: rockchip: Further describe the WiFi for the Pinebook Pro
    
    Update the wake-up pin and associated interupt details for the
    Pinebook Pro WiFi module.
    
    Signed-off-by: Peter Robinson <pbrobinson at gmail.com>
    Link: https://lore.kernel.org/r/20250827143040.1644867-1-pbrobinson@gmail.com
    Signed-off-by: Heiko Stuebner <heiko at sntech.de>

 arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)


With this commit reverted on top of 6.18.1 wireless connection works
fine.

Not sure what could be relevant but:
- it's an early model, I think second batch, delivered end of 2019
- mainline uboot 2025.10 is used


#regzbot introduced: 6d54d93506