Hi Luiz,
On Sat, Nov 16, 2024 at 07:49:23AM -0800, Zijun Hu wrote:
> For WCN6855, board ID specific NVM needs to be downloaded once board ID
> is available, but the default NVM is always downloaded currently, and
> the wrong NVM causes poor RF performance which effects user experience.
>
> Fix by downloading board ID specific NVM if board ID is available.
>
> Cc: Bjorn Andersson <bjorande@xxxxxxxxxxx>
> Cc: Aiqun Yu (Maria) <quic_aiquny@xxxxxxxxxxx>
> Cc: Cheng Jiang <quic_chejiang@xxxxxxxxxxx>
> Cc: Johan Hovold <johan@xxxxxxxxxx>
> Cc: Jens Glathe <jens.glathe@xxxxxxxxxxxxxxxxxxxxxx>
> Cc: Steev Klimaszewski <steev@xxxxxxxx>
> Cc: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
> Fixes: 095327fede00 ("Bluetooth: hci_qca: Add support for QTI Bluetooth chip wcn6855")
> Cc: stable@xxxxxxxxxxxxxxx # 6.4
> Reviewed-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
> Tested-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
> Tested-by: Steev Klimaszewski <steev@xxxxxxxx>
> Tested-by: Jens Glathe <jens.glathe@xxxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
> I will help to backport it to LTS kernels ASAP once this commit
> is mainlined.
> ---
> Changes in v2:
> - Correct subject and commit message
> - Temporarily add nvm fallback logic to speed up backport.
> — Add fix/stable tags as suggested by Luiz and Johan
> - Link to v1: https://lore.kernel.org/r/20241113-x13s_wcn6855_fix-v1-1-15af0aa2549c@xxxxxxxxxxx
The board-specific NVM configuration files have now been included in the
linux-firmware-20241210 release and are making their way into the
distros (e.g. Arch Linux ARM and Fedora now ship them).
Could we get this merged for 6.13-rc (and backported) so that Lenovo
ThinkPad X13s users can finally enjoy excellent Bluetooth range? :)
Johan
