6.6-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan+linaro@kernel.org
commit e12e28009e584c8f8363439f6a928ec86278a106 upstream.
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 boot firmware in SC7180 Trogdor Chromebooks is known to be affected so mark the 'local-bd-address' property as broken to maintain backwards compatibility with older firmware when fixing the underlying driver bug.
Note that ChromeOS always updates the kernel and devicetree in lockstep so that there is no need to handle backwards compatibility with older devicetrees.
Fixes: 7ec3e67307f8 ("arm64: dts: qcom: sc7180-trogdor: add initial trogdor and lazor dt") Cc: stable@vger.kernel.org # 5.10 Cc: Rob Clark robdclark@chromium.org Reviewed-by: Douglas Anderson dianders@chromium.org Signed-off-by: Johan Hovold johan+linaro@kernel.org Acked-by: Bjorn Andersson andersson@kernel.org Reviewed-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 2 ++ 1 file changed, 2 insertions(+)
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi @@ -970,6 +970,8 @@ ap_spi_fp: &spi10 { vddrf-supply = <&pp1300_l2c>; vddch0-supply = <&pp3300_l10c>; max-speed = <3200000>; + + qcom,local-bd-address-broken; }; };