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Tue, 28 Apr 2026 01:08:35 -0700 (PDT) X-Received: by 2002:a17:90b:2e88:b0:35d:9c32:6219 with SMTP id 98e67ed59e1d1-36491fda867mr2410709a91.9.1777363714720; Tue, 28 Apr 2026 01:08:34 -0700 (PDT) Received: from [10.206.105.200] ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-36490c4f3edsm976224a91.6.2026.04.28.01.08.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 28 Apr 2026 01:08:33 -0700 (PDT) Message-ID: <97aa5f18-d1d5-f082-9075-a385255f2e97@oss.qualcomm.com> Date: Tue, 28 Apr 2026 13:38:25 +0530 Precedence: bulk X-Mailing-List: linux-media@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 From: Vishnu Reddy Subject: Re: [PATCH v3 02/12] dt-bindings: media: qcom,glymur-iris: Add glymur video codec To: Krzysztof Kozlowski Cc: Vikash Garodia , Dikshita Agarwal , Abhinav Kumar , Bryan O'Donoghue , Mauro Carvalho Chehab , Hans Verkuil , Stefan Schmidt , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Stanimir Varbanov , Joerg Roedel , Will Deacon , Robin Murphy , Bjorn Andersson , Konrad Dybcio , linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, iommu@lists.linux.dev References: <20260428-glymur-v3-0-8f28930f47d3@oss.qualcomm.com> <20260428-glymur-v3-2-8f28930f47d3@oss.qualcomm.com> <20260428-nifty-quaint-hoatzin-6de65d@quoll> Content-Language: en-US In-Reply-To: <20260428-nifty-quaint-hoatzin-6de65d@quoll> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDI4MDA3NCBTYWx0ZWRfX8XnwTv5uNTzA 0Hfz4/QdWkPZgfpu8UpVr3wRLbwOot0CLTzbaqXZecLWnBjdtr6InlPwiPiwPPYKImCnO1h/hzu awWhUIV8V6PsafcThcRns6mOU/k3A/WhsFD5kUoUw4qNcoHR8M4rOo/qNtcw7MolBmMmF0wdpMQ TZ2nrLfSDOlgyZH1KkxV72F7gE0gMBVDnmXhxWY1bd89m8GwUKT1wMLRjaG7OX9O41ZT1fomi32 fZpIp9rZ5U1T3Id2CE99K1XKWoya2lbxncCwD9TvTbMeHzq8ByGsE23X9PP6EHRWGiOSkeatoiD FUxDRzfm+v4roMo16YN+XXvC2FdVuGvjSZxK7RuBugeJdpw/gauWBC022rgl+POOYXyOqXyJIlR Qz8TGjKjKsAJxHqpyHRAF0M4kbS3fi9uW1rJuvYrTV1d4+KDEkBx0tCj9vkipcRZU8OotH5sUFe W2oR15N4bVxaJjHtKkA== X-Authority-Analysis: v=2.4 cv=JoDBas4C c=1 sm=1 tr=0 ts=69f06b04 cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=HCVpI3b-1_oNncJzd4sA:9 a=QEXdDO2ut3YA:10 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-GUID: 1dlLcfXS-twrEHI2kvZdFjAT01evNp1P X-Proofpoint-ORIG-GUID: 1dlLcfXS-twrEHI2kvZdFjAT01evNp1P X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-28_02,2026-04-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 spamscore=0 bulkscore=0 clxscore=1015 adultscore=0 phishscore=0 malwarescore=0 suspectscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2604280074 On 4/28/2026 11:44 AM, Krzysztof Kozlowski wrote: > On Tue, Apr 28, 2026 at 09:24:08AM +0530, Vishnu Reddy wrote: >> Add device tree binding for the Qualcomm Glymur Iris video codec. Glymur >> is a new generation of video IP that introduces a dual-core architecture. >> The second core brings its own power domain, clocks, and reset lines, >> requiring additional power domains and clocks in the power sequence. >> >> To accommodate glymur clock and power resources requirement, the maxItems >> constraints in qcom,venus-common.yaml are relaxed. This allows the glymur > This is a very confusing part of commit msg. You cannot relax the > constraints. Each device MUST have a specific, fixed constraint. It is > your task to be sure they are not relaxed. > > >> binding to inherit from the common venus schema without duplicating shared >> properties. > That's obvious. Why would new iris device schema not use common venus > schema? What is different here then that such possibility exists? Glymur platform has a dual-core video codec architecture (vcodec0 + vcodec1), requiring 9 clocks and 5 power domains. The stricter maxItems from the qcom,venus-common.yaml takes precedence, making it impossible to accommodate glymur requirements without updating the common schema. The same thing I mentioned in our earlier discussion here, https://lore.kernel.org/all/6d5516ab-f693-e605-77ad-e3f7d0bf579e@oss.qualcomm.com/ Alternatively, I can drop the $ref and use additionalProperties: false. Please let me know your preferred approach. Thanks, Vishnu Reddy. > Best regards, > Krzysztof >