[REGRESSION][BISECTED] wifi broken on pinebook pro

[Jan Palus]

On 03.02.2026 11:42, Thorsten Leemhuis wrote:
> On 1/14/26 14:03, Thorsten Leemhuis wrote:
> > [top-posting to facilitate processing]
> > 
> > Peter, Heiko, what's the deal here? This looks stalled. Is temporarily
> > reverting an option, or would that cause regressions for other users
> > that already benefit from the change that is causing the problem?
> 
> I assume this wasn't fixed yet (Jan, please correct me if I'm wrong!):

Just to make it clear in case anyone is waiting for confirmation: the
issue is still present.
 
> Heiko, could you maybe submit a revert? Fixing this is long overdue
> afaics, as Linus just recently wrote ""rule of thumb [to get
> user-reported regressions fixed] should generally be "within a week",
> preferably before the next rc.""[1] – we are way past that.
> 
> Note, I assume this will break things for people where the change in
> question improved things. But I suspect he in a situation like this
> Linus prefers to go back to what was "normal" before the culprit was
> merged. If we are unsure about this I guess we should get him involved
> to clean this up.
> 
> Ciao, Thorsten
> 
> [1]
> https://lore.kernel.org/all/CAHk-%3Dwi86AosXs66-yi54%2BmpQjPu0upxB8ZAfG%2BLsMyJmcuMSA@mail.gmail.com/
> 
> 
> > On 12/29/25 07:23, Peter Robinson wrote:
> >> 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
>