Message ID | 1677490575-29092-1-git-send-email-quic_krichai@quicinc.com |
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Mon, 27 Feb 2023 09:36:29 +0000 Received: from pps.filterd (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 31R9aOeS026273; Mon, 27 Feb 2023 09:36:24 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 3nybdkafcc-1; Mon, 27 Feb 2023 09:36:24 +0000 Received: from APBLRPPMTA02.qualcomm.com (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 31R9aO1R026268; Mon, 27 Feb 2023 09:36:24 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-krichai-hyd.qualcomm.com [10.213.110.37]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 31R9aOMS026267; Mon, 27 Feb 2023 09:36:24 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 4058933) id 65E4147AF; Mon, 27 Feb 2023 15:06:23 +0530 (+0530) From: Krishna chaitanya chundru <quic_krichai@quicinc.com> To: helgaas@kernel.org Cc: linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, mka@chromium.org, quic_vbadigan@quicinc.com, quic_hemantk@quicinc.com, quic_nitegupt@quicinc.com, quic_skananth@quicinc.com, quic_ramkri@quicinc.com, manivannan.sadhasivam@linaro.org, swboyd@chromium.org, dmitry.baryshkov@linaro.org, svarbanov@mm-sol.com, agross@kernel.org, andersson@kernel.org, konrad.dybcio@somainline.org, lpieralisi@kernel.org, robh@kernel.org, kw@linux.com, bhelgaas@google.com, linux-phy@lists.infradead.org, vkoul@kernel.org, kishon@ti.com, mturquette@baylibre.com, linux-clk@vger.kernel.org, Krishna chaitanya chundru <quic_krichai@quicinc.com>, Konrad Dybcio <konrad.dybcio@linaro.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS) Subject: [PATCH V1] arm64:dts:qcom:sc7280: mark memory of PCIe as cache coherent Date: Mon, 27 Feb 2023 15:06:15 +0530 Message-Id: <1677490575-29092-1-git-send-email-quic_krichai@quicinc.com> X-Mailer: git-send-email 2.7.4 X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: hv5wk8APxsiR4odzxFP3I-ezSliRXOvh X-Proofpoint-ORIG-GUID: hv5wk8APxsiR4odzxFP3I-ezSliRXOvh X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-26_22,2023-02-24_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 bulkscore=0 clxscore=1011 phishscore=0 mlxscore=0 mlxlogscore=653 priorityscore=1501 impostorscore=0 suspectscore=0 spamscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302270074 X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_LOW,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1758977380187815396?= X-GMAIL-MSGID: =?utf-8?q?1758977380187815396?= |
Series |
[V1] arm64:dts:qcom:sc7280: mark memory of PCIe as cache coherent
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Commit Message
Krishna chaitanya chundru
Feb. 27, 2023, 9:36 a.m. UTC
Mark the PCIe node as dma-coherent as the devices on PCIe bus are
cache coherent.
Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
---
arch/arm64/boot/dts/qcom/sc7280.dtsi | 2 ++
1 file changed, 2 insertions(+)
Comments
Please fix the subject as: arm64: dts: qcom: sc7280: Mark PCIe controller as cache coherent On Mon, Feb 27, 2023 at 03:06:15PM +0530, Krishna chaitanya chundru wrote: > Mark the PCIe node as dma-coherent as the devices on PCIe bus are > cache coherent. > But this is a bug fix actually. If the controller is not marked as cache coherent, then kernel will try to ensure coherency during dma-ops and that may cause data corruption. So please add fixes tag and CC stable. Thanks, Mani > Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com> > --- > arch/arm64/boot/dts/qcom/sc7280.dtsi | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi > index bdcb749..8f4ab6b 100644 > --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi > +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi > @@ -2131,6 +2131,8 @@ > pinctrl-names = "default"; > pinctrl-0 = <&pcie1_clkreq_n>; > > + dma-coherent; > + > iommus = <&apps_smmu 0x1c80 0x1>; > > iommu-map = <0x0 &apps_smmu 0x1c80 0x1>, > -- > 2.7.4 >
diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi index bdcb749..8f4ab6b 100644 --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi @@ -2131,6 +2131,8 @@ pinctrl-names = "default"; pinctrl-0 = <&pcie1_clkreq_n>; + dma-coherent; + iommus = <&apps_smmu 0x1c80 0x1>; iommu-map = <0x0 &apps_smmu 0x1c80 0x1>,