Re: [PATCH] Bluetooth: hci_bcm: Default to 4 Mbps

[Luiz Augusto von Dentz]

Hi Paul,

On Sat, Aug 29, 2026 at 6:02 AM Paul Cercueil <paul@xxxxxxxxxxxxxxx> wrote:
>
> The ACPI path already did default to 4000000 baud, while the OF path did
> not, for some reason. This meant that unless overridden with the
> 'max-speed' OF property, the serial port would stay at the init speed of
> 115200 bps, making it unsuitable with high-speed Bluetooth devices like
> audio equipment.
>
> Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
> ---
>  drivers/bluetooth/hci_bcm.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
> index 9a103db7e355..c44d552f9ad5 100644
> --- a/drivers/bluetooth/hci_bcm.c
> +++ b/drivers/bluetooth/hci_bcm.c
> @@ -1224,6 +1224,7 @@ static int bcm_acpi_probe(struct bcm_device *dev)
>
>  static int bcm_of_probe(struct bcm_device *bdev)
>  {
> +       bdev->oper_speed = 4000000;
>         bdev->use_autobaud_mode = device_property_read_bool(bdev->dev,
>                                                             "brcm,requires-autobaud-mode");
>         device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed);
> --
> 2.53.0

Sashiko flagged a problem with this:

https://sashiko.dev/#/patchset/20260829100205.113655-1-paul%40crapouillou.net

-- 
Luiz Augusto von Dentz