From patchwork Tue Mar 19 15:29:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 13596781 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AD132657BE; Tue, 19 Mar 2024 15:29:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710862193; cv=none; b=Hga3DdTiuMqDLCrhGeuHd0rbiXGj0hUCd+CTXIWhQAuMOLNH5QZ2yjzX7HiiVugBjl4bevuQEHz7+TY5eO5rAZfeDns05Z8LYlwLzY1T20sCUzr/sW0C0/koEIYrKzLQ8n5EN3ql/iVXnNkmvTut9YIV9eexOD7O/E2HtIxrQ9o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710862193; c=relaxed/simple; bh=8/BAOgM7/E4Oo/lzhVSkfOrC0gVN60IoirdUeSlLQpk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sUgYcZcQ0NWP/o45wR8H1ja/QCTBDJVG/axzfQKrK81SiSLl1NY6S4jUyhV2erv8E4zEvCBOWePEtcsLeWDr5+Fb24yifiPu+ZpNZ+PpTuaaK8PypRpW1uukECIe1vIr/ATKgcqD5/hXV0EY0YYzg/BgMAwbYuelZONgoOTWzMQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FZEu/ANV; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="FZEu/ANV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4E101C433C7; Tue, 19 Mar 2024 15:29:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710862193; bh=8/BAOgM7/E4Oo/lzhVSkfOrC0gVN60IoirdUeSlLQpk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FZEu/ANVOCScrmFrRpYhb6lv9kfcI1MRolgnPAxDfUrvI856KNELYC3gAS8nuBngd M9XRLrl7h90EkRCEN7dMkycWmKdksVc5h+jviA+dvCsF6khX3idFQrM08mbr/zFiH0 uB30woKsESP10flPIy9Es48hqFbbAc8uRLc4JmkUiN+zkmTmEOeepDeBh68U0qROlK epUIiwqvdOWJeQTxGFdJIQ7w37pcOzYQEFJDNIsFdzyVgbc//n2AEKPzQYeZgANrb1 q545wrbYA5yREvFDOuo80nyciU2H/jCDmRWOvqvj0GJBaYCxZRVgtqlYOR+KQusKHI 8ACqk3BgRQhGw== Received: from johan by xi.lan with local (Exim 4.97.1) (envelope-from ) id 1rmbPc-000000000LO-0cIK; Tue, 19 Mar 2024 16:30:00 +0100 From: Johan Hovold To: Marcel Holtmann , Luiz Augusto von Dentz , Bjorn Andersson Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , cros-qcom-dts-watchers@chromium.org, Konrad Dybcio , Johan Hedberg , Balakrishna Godavarthi , Matthias Kaehlcke , Douglas Anderson , Rocky Liao , Dmitry Baryshkov , linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , stable@vger.kernel.org, Rob Clark Subject: [PATCH v3 5/5] arm64: dts: qcom: sc7180-trogdor: mark bluetooth address as broken Date: Tue, 19 Mar 2024 16:29:26 +0100 Message-ID: <20240319152926.1288-6-johan+linaro@kernel.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240319152926.1288-1-johan+linaro@kernel.org> References: <20240319152926.1288-1-johan+linaro@kernel.org> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 Signed-off-by: Johan Hovold Reviewed-by: Douglas Anderson --- arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi index 46aaeba28604..ebe37678102f 100644 --- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi @@ -943,6 +943,8 @@ bluetooth: bluetooth { vddrf-supply = <&pp1300_l2c>; vddch0-supply = <&pp3300_l10c>; max-speed = <3200000>; + + qcom,local-bd-address-broken; }; };