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Thu, 15 Oct 2026 22:20:51 -0700 (PDT) Received: from hu-parihar-hyd.qualcomm.com ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-36083283478sm2997220eec.29.2026.10.15.22.20.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Oct 2026 22:20:51 -0700 (PDT) From: Abhinav Parihar To: srinivas.kandagatla@linaro.org, linux-arm-msm@vger.kernel.org Cc: Abhinav Parihar , gregkh@linuxfoundation.org, quic_bkumar@quicinc.com, ekansh.gupta@oss.qualcomm.com, linux-kernel@vger.kernel.org, quic_chennak@quicinc.com, dri-devel@lists.freedesktop.org, arnd@arndb.de Subject: [PATCH v1] arm64: dts: qcom: Remove FastRPC compute CB9 entries Date: Fri, 16 Oct 2026 10:50:42 +0530 Message-Id: <20261016052042.3755352-1-abhinav.parihar@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: AB_4qujP0_L7ExjdiSR1JsCE_rf42w91 X-Authority-Analysis: v=2.4 cv=ff04WEQF c=1 sm=1 tr=0 ts=6ad1b435 cx=c_pps a=SvEPeNj+VMjHSW//kvnxuw==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=EUspDBNiAAAA:8 a=zYYqb8WEuwc2w2ptBsEA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=Kq8ClHjjuc5pcCNDwlU0:22 X-Proofpoint-GUID: AB_4qujP0_L7ExjdiSR1JsCE_rf42w91 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE2MDAyMSBTYWx0ZWRfX1Zzj72L27P/9 0aputGI3hKrk4+DkABn2wbJBNr1dzAMHZ/CiRb0koSSq56iCBD484ZzRz2o/2/LgEd5ONuKbyHU khKlyG3hQsIX/ipvkONeanfrMLwMrOYhziair8Ae0GLrTQVSTUT2iYfYwnxC6kOThT+P2wN1DLp CBP0GTYtNO7KTYusPD3wvRr1GESflh05rP2w/Bc4eLjGdiIAXgXfcZFly8J7loT/8/ch6UAVwKD Jfre3FHlt0UvJjSfj1QgM61G7M8GFnV47/1A52/baEQuD8wLFBdmGt0ZsCF0e6RhyWcvbBbsaIX y8xl0dm4W2ndASQyVqUKIC+kfJTxkgX0SYVuN/QJbOXQw2cEYxvopOWn/Gp6s+X5srUaE07s81Z iKWinO6jm71WHYegZ7tgGdTuXcIvW3ph95ah1h0h680KyQyRT4fGePq0OW8cP7DXhihVKq4CmaC u4sXxkdkwJQ9xGo7Ogw== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE2MDAyMSBTYWx0ZWRfX0VQKc+iqfEEr NX3MFLrjCzUk5oGCDJKKilxFijjfurA053PFt5Lna6DSWigAqc+Q/A7vpB9YWDxxgFnze/1Hg6f L9O4GppYeRTd/QFgRK/bQY4oIdUlayo= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-14_01,2026-10-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 clxscore=1011 lowpriorityscore=0 malwarescore=0 spamscore=0 phishscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610160021 Context bank 9 is reserved for secure use cases and must not be exposed as a FastRPC compute context bank for non-secure offloading.   Remove the compute-cb@9 nodes from the Lemans and Monaco device trees to prevent clients from selecting a secure context bank for normal FastRPC workloads. Secure use case support is not currently implemented upstream. Signed-off-by: Abhinav Parihar --- arch/arm64/boot/dts/qcom/lemans.dtsi | 16 ---------------- arch/arm64/boot/dts/qcom/monaco.dtsi | 7 ------- 2 files changed, 23 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/lemans.dtsi b/arch/arm64/boot/dts/qcom/lemans.dtsi index 695eae1b7256..5481dfb73454 100644 --- a/arch/arm64/boot/dts/qcom/lemans.dtsi +++ b/arch/arm64/boot/dts/qcom/lemans.dtsi @@ -7861,14 +7861,6 @@ compute-cb@8 { dma-coherent; }; - compute-cb@9 { - compatible = "qcom,fastrpc-compute-cb"; - reg = <9>; - iommus = <&apps_smmu 0x2149 0x04a0>, - <&apps_smmu 0x2189 0x0400>; - dma-coherent; - }; - compute-cb@11 { compatible = "qcom,fastrpc-compute-cb"; reg = <11>; @@ -8000,14 +7992,6 @@ compute-cb@8 { dma-coherent; }; - compute-cb@9 { - compatible = "qcom,fastrpc-compute-cb"; - reg = <9>; - iommus = <&apps_smmu 0x2949 0x04a0>, - <&apps_smmu 0x2989 0x0400>; - dma-coherent; - }; - compute-cb@10 { compatible = "qcom,fastrpc-compute-cb"; reg = <10>; diff --git a/arch/arm64/boot/dts/qcom/monaco.dtsi b/arch/arm64/boot/dts/qcom/monaco.dtsi index cfe39f923224..e73a735f2f13 100644 --- a/arch/arm64/boot/dts/qcom/monaco.dtsi +++ b/arch/arm64/boot/dts/qcom/monaco.dtsi @@ -7822,13 +7822,6 @@ compute-cb@8 { dma-coherent; }; - compute-cb@9 { - compatible = "qcom,fastrpc-compute-cb"; - reg = <9>; - iommus = <&apps_smmu 0x19c9 0x0400>; - dma-coherent; - }; - compute-cb@11 { compatible = "qcom,fastrpc-compute-cb"; reg = <0xb>; -- 2.34.1