Re: [PATCH v1 1/2] dt-bindings: net: bluetooth: ti: Add property for enhanced SCO setup erratum

[Krzysztof Kozlowski <krzk@kernel.org>]

On 23/02/2026 12:52, Stefano Radaelli wrote:
> From: Stefano Radaelli <stefano.r@variscite.com>
> 
> Some Bluetooth controller/firmware combinations advertise support for the

Which ones?

> HCI Enhanced Setup Synchronous Connection command but do not handle it
> correctly for SCO setup in certain configurations (e.g.
> BT_VOICE_TRANSPARENT/mSBC). This results in SCO audio not working unless
> the enhanced setup path is avoided.
> 
> Add an optional boolean property, ti,no-enhanced-setup-sync-conn, to
> describe this controller limitation.
> 
> Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
> ---
>  .../devicetree/bindings/net/bluetooth/ti,bluetooth.yaml    | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/bluetooth/ti,bluetooth.yaml b/Documentation/devicetree/bindings/net/bluetooth/ti,bluetooth.yaml
> index 290abc22e18a..92ed443cb427 100644
> --- a/Documentation/devicetree/bindings/net/bluetooth/ti,bluetooth.yaml
> +++ b/Documentation/devicetree/bindings/net/bluetooth/ti,bluetooth.yaml
> @@ -71,6 +71,13 @@ properties:
>      items:
>        - const: bd-address
>  
> +  ti,no-enhanced-setup-sync-conn:
> +    type: boolean
> +    description:
> +      Indicates that the Bluetooth controller/firmware does not correctly
> +      handle the HCI Enhanced Setup Synchronous Connection command for SCO
> +      setup, despite advertising support for it.

This looks a lot like controller issue, thus deducible from the
compatible. And even if particular firmware has problem, how do you see
changing static DTS on linux-firmware update?

Best regards,
Krzysztof