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Thu, 18 Jun 2026 20:38:36 -0700 (PDT) X-Received: by 2002:a05:6a00:1ac6:b0:842:72af:b3b7 with SMTP id d2e1a72fcca58-845508bbcf2mr1852144b3a.33.1781840315903; Thu, 18 Jun 2026 20:38:35 -0700 (PDT) Received: from [192.168.29.100] ([49.43.194.141]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8455364c24esm697557b3a.12.2026.06.18.20.38.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 18 Jun 2026 20:38:35 -0700 (PDT) Message-ID: <264b10a3-26bb-645d-d594-b73f50b91879@oss.qualcomm.com> Date: Fri, 19 Jun 2026 09:08:27 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH v3 1/3] dt-bindings: media: qcom,qcm2290-venus: document shikra Iris compatible To: Vikash Garodia , Bryan O'Donoghue , Dikshita Agarwal , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jorge Ramirez-Ortiz , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260618-shikra_vpu-v3-0-1a32e26a35a1@oss.qualcomm.com> <20260618-shikra_vpu-v3-1-1a32e26a35a1@oss.qualcomm.com> Content-Language: en-US From: Vishnu Reddy In-Reply-To: <20260618-shikra_vpu-v3-1-1a32e26a35a1@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Info: AW1haW4tMjYwNjE5MDAyOSBTYWx0ZWRfX94Q8OY/a39UQ 6w+32siV6E+1ywbWxyJ6bapaYLS3B0kmdu096yg8q95cOhntR3Q67B+R+01BdmNmIfkc3oy15SU WfEDRydx7cgPKDTOules2Ea8TWc/Xts= X-Proofpoint-ORIG-GUID: AKwN6hKYyB4ze5fKkKakQ8VWLexzX1WH X-Authority-Analysis: v=2.4 cv=dL2WXuZb c=1 sm=1 tr=0 ts=6a34b9bd cx=c_pps a=m5Vt/hrsBiPMCU0y4gIsQw==:117 a=LrD0L7TPytbPiIQqxktYyw==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8 a=gomYnHnAK4kzn5urjScA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=IoOABgeZipijB_acs4fv:22 X-Proofpoint-GUID: AKwN6hKYyB4ze5fKkKakQ8VWLexzX1WH X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjE5MDAyOSBTYWx0ZWRfX0iou36C8/GjI EU1o9QGUrMIGym96Ge3j2FSsftxXAZztIjpoMepiUVdTiW1QK+GMCillXWyu81FFuhxHSPoteLE kJEAjPt8kl2sV42ccwUBRSBmpUtgnfoz1EUrH/Ge9P1VYDDP3JeLhYHAufwYP/DZrBYSER+A8KX phmCJ1p87EHrlmp9e80vMYVH4zOhz6Qax7Gg4lPmsGISSVbX8TMAN6vC4jPBymb6tpn6RB2sQWv 9sPHfdFwMbynKBPSWn8DjjxKMROamYThSJodB0flPHrWXwXV1t+kH7H5QSN9jKWmrPObJi+3My/ vRLoaD4dzEUmC8iWl9ZKZ1jW3B1EQfTHRYV+1gp9Sg5v6CZLn7akdw9TutPqTOLSFTO8fHMrTAk Y0pVZalz80Obf1CJJNtFJROULMVKxABPECgEe2SWRkFx0QFFu2BReROGOT/fz3WvEtjPZYh6fwR 6lfsNshfPtPZi2LNeFA== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-19_01,2026-06-18_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 spamscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 malwarescore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606190029 On 6/18/2026 4:09 PM, Vikash Garodia wrote: > Document the iris video accelerator used on shikra platforms by adding > the qcom,shikra-iris compatible. > > Although QCM2290 and shikra share the same video hardware and overall > integration, their SMMU programming differs. QCM2290 exposes separate > stream IDs for the video hardware and the Xtensa path, requiring two > explicit IOMMU entries, whereas shikra uses a masked SMR to collapse > equivalent stream IDs into a single mapping. Due to QCM2290’s SID layout > and Xtensa isolation requirements, such SMR masking is not applicable on > QCM2290 platforms. > Since shikra uses the same video hardware as QCM2290 and shares the same > programming model and capabilities, it is added as a fallback compatible > to qcom,qcm2290-venus, with conditional handling to allow either one or > two IOMMU entries. > > Signed-off-by: Vikash Garodia > --- > .../bindings/media/qcom,qcm2290-venus.yaml | 26 ++++++++++++++++------ > 1 file changed, 19 insertions(+), 7 deletions(-) > > diff --git a/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml b/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml > index 5977e7d0a71b4fb5681f1c2094439c251366f01f..b27899ebf164229ceff1ca5cda50ee30d875e953 100644 > --- a/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml > +++ b/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml > @@ -13,14 +13,13 @@ description: > The Venus AR50_LITE IP is a video encode and decode accelerator present > on Qualcomm platforms. > > -allOf: > - - $ref: qcom,venus-common.yaml# > - > properties: > compatible: > oneOf: > - items: > - - const: qcom,sm6115-venus > + - enum: > + - qcom,shikra-venus > + - qcom,sm6115-venus > - const: qcom,qcm2290-venus > - const: qcom,qcm2290-venus > > @@ -45,9 +44,6 @@ properties: > - const: vcodec0_core > - const: vcodec0_bus > > - iommus: > - maxItems: 2 > - > interconnects: > maxItems: 2 > > @@ -65,6 +61,22 @@ required: > - power-domain-names > - iommus > > +allOf: > + - $ref: qcom,venus-common.yaml# > + - if: > + properties: > + compatible: > + contains: > + const: qcom,shikra-venus > + then: > + properties: > + iommus: > + maxItems: 1 > + else: > + properties: > + iommus: > + maxItems: 2 > + > unevaluatedProperties: false > > examples: Reviewed-by: Vishnu Reddy