Re: [PATCH v4 1/4] dt-bindings: bluetooth: add 'qcom,local-bd-address-broken'

[Rob Herring <robh@kernel.org>]

On Wed, 20 Mar 2024 08:55:51 +0100, Johan Hovold wrote:
> Several Qualcomm Bluetooth controllers lack persistent storage for the
> device address and instead one can be provided by the boot firmware
> using the 'local-bd-address' devicetree property.
> 
> The Bluetooth bindings clearly states that the address should be
> specified in little-endian order, but due to a long-standing bug in the
> Qualcomm driver which reversed the address some boot firmware has been
> providing the address in big-endian order instead.
> 
> The only device out there that should be affected by this is the WCN3991
> used in some Chromebooks.
> 
> Add a 'qcom,local-bd-address-broken' property which can be set on these
> platforms to indicate that the boot firmware is using the wrong byte
> order.
> 
> Note that ChromeOS always updates the kernel and devicetree in lockstep
> so that there is no need to handle backwards compatibility with older
> devicetrees.
> 
> Reviewed-by: Douglas Anderson <dianders@chromium.org>
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>  .../devicetree/bindings/net/bluetooth/qualcomm-bluetooth.yaml | 4 ++++
>  1 file changed, 4 insertions(+)
> 

Reviewed-by: Rob Herring <robh@kernel.org>