[REGRESSION][BISECTED] wifi broken on pinebook pro

[Thorsten Leemhuis]

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!):

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