linux-kernel - Re: [PATCH v3 1/5] dt-bindings: bluetooth: add 'qcom,local-bd-address-broken'

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Message-Id: <171087317847.5394.2197018705200988833.robh@kernel.org>
Date: Tue, 19 Mar 2024 15:02:08 -0500
From: Rob Herring <robh@...nel.org>
To: Johan Hovold <johan+linaro@...nel.org>
Cc: Balakrishna Godavarthi <quic_bgodavar@...cinc.com>, 
 Matthias Kaehlcke <mka@...omium.org>, devicetree@...r.kernel.org, 
 netdev@...r.kernel.org, Konrad Dybcio <konrad.dybcio@...aro.org>, 
 Rob Herring <robh+dt@...nel.org>, Rocky Liao <quic_rjliao@...cinc.com>, 
 linux-bluetooth@...r.kernel.org, Douglas Anderson <dianders@...omium.org>, 
 Luiz Augusto von Dentz <luiz.dentz@...il.com>, 
 Johan Hedberg <johan.hedberg@...il.com>, 
 Marcel Holtmann <marcel@...tmann.org>, cros-qcom-dts-watchers@...omium.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, 
 Bjorn Andersson <andersson@...nel.org>, linux-kernel@...r.kernel.org, 
 Conor Dooley <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v3 1/5] dt-bindings: bluetooth: add
 'qcom,local-bd-address-broken'

On Tue, 19 Mar 2024 16:29:22 +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.
> 
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
> ---
>  .../devicetree/bindings/net/bluetooth/qualcomm-bluetooth.yaml  | 3 +++
>  1 file changed, 3 insertions(+)
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:
/Documentation/devicetree/bindings/net/bluetooth/qualcomm-bluetooth.yaml:98:16: [error] syntax error: mapping values are not allowed here (syntax)

dtschema/dtc warnings/errors:
make[2]: *** Deleting file 'Documentation/devicetree/bindings/net/bluetooth/qualcomm-bluetooth.example.dts'
Documentation/devicetree/bindings/net/bluetooth/qualcomm-bluetooth.yaml:98:16: mapping values are not allowed in this context
make[2]: *** [Documentation/devicetree/bindings/Makefile:26: Documentation/devicetree/bindings/net/bluetooth/qualcomm-bluetooth.example.dts] Error 1
make[2]: *** Waiting for unfinished jobs....
/Documentation/devicetree/bindings/net/bluetooth/qualcomm-bluetooth.yaml:98:16: mapping values are not allowed in this context
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/bluetooth/qualcomm-bluetooth.yaml: ignoring, error parsing file
make[1]: *** [/builds/robherring/dt-review-ci/linux/Makefile:1428: dt_binding_check] Error 2
make: *** [Makefile:240: __sub-make] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20240319152926.1288-2-johan+linaro@kernel.org

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.