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[188.141.3.146]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4538233bd14sm230508525e9.2.2025.07.02.05.06.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 02 Jul 2025 05:06:18 -0700 (PDT) Message-ID: Date: Wed, 2 Jul 2025 13:06:17 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 0/5] Introduce "non-pixel" sub node within iris video node To: Vikash Garodia , Krzysztof Kozlowski , Dikshita Agarwal , Abhinav Kumar , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250627-video_cb-v3-0-51e18c0ffbce@quicinc.com> <5f90547d-945a-4e26-b36c-75f2d8a1af97@kernel.org> <5ad418d9-8199-43c9-a477-1e3b939c054c@kernel.org> <7b6db4fa-2f73-376d-4eb3-64c1c7e6cda3@quicinc.com> Content-Language: en-US From: Bryan O'Donoghue In-Reply-To: <7b6db4fa-2f73-376d-4eb3-64c1c7e6cda3@quicinc.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 02/07/2025 13:01, Vikash Garodia wrote: >> Anyway, in other messages I explained what is missing. You are changing >> existing hardware and you clearly must explain how existing hardware is >> affected, how can we reproduce it, how users are affected. > Exactly all of these i have explained in the commit message. The limitation with > existing hardware binding usage and how my new approach mitigates that limition. > > Coming to usecase, i made a generic comment saying usecases which needs higher > IOVA, i can add the explicit detail about usecase like 8k or higher > concurrencies like 32 or higher concurrent sessions. Why not make this change for a new SoC, instead of an existing ? That way you don't have to make the argument for retrospective ABI changes. --- bod