Re: [PATCH v2 5/5] Bluetooth: hci_bcm: Increase host baudrate for CYW55572 in autobaud mode

Linus Walleij
2022-07-11T08:35:54Z

On Thu, Jun 30, 2022 at 2:55 PM Hakan Jansson
<hakan.jansson@infineon.com> wrote:

> Add device specific data for max baudrate in autobaud mode. This allows the
> host to use a baudrate higher than "init speed" when loading FW in autobaud
> mode.
>
> The device specific max baudrate in autobaud mode for CYW55572 is set to
> 921600 bps. Devices without device specific max baudrate in autobaud mode
> will use init speed as before. If no device specific init speed has been
> specified, it will default to the bcm_proto default 115200 bps.
>
> The increased baud rate improves FW load time. The exact load time will
> depend on the specific system and FW being used. As a rough indication,
> the FW load time dropped from ~9s @ 115.2kbps to ~1.7s @ 921.6kbps in one
> test.
>
> Signed-off-by: Hakan Jansson <hakan.jansson@infineon.com>

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Yours,
Linus Walleij