[REGRESSION][BISECTED] wifi broken on pinebook pro

[Peter Robinson]

On Wed, 17 Dec 2025 at 11:26, Jan Palus <jpalus at fastmail.com> wrote:
>
> 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

Is it the Synoptics or the Cypress/Infineon module? What firmware are you using?

> - mainline uboot 2025.10 is used
>
>
> #regzbot introduced: 6d54d93506