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Thu, 12 Nov 2026 03:40:59 -0800 (PST) Received: from DESKTOP-NM9EKIA ([180.67.33.100]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-375212ec002sm29245380eec.26.2026.11.12.03.40.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Nov 2026 03:40:59 -0800 (PST) From: Joonhoe Kim <26rote@gmail.com> To: Vikash Garodia Cc: Dikshita Agarwal , Abhinav Kumar , Bryan O'Donoghue , Mauro Carvalho Chehab , Hans Verkuil , Vishnu Reddy , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Stanimir Varbanov , Bjorn Andersson , Konrad Dybcio , Abel Vesa , linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Krzysztof Kozlowski , devicetree@vger.kernel.org Subject: Re: [PATCH v4 4/6] media: iris: add platform data for kaanapali Date: Thu, 12 Nov 2026 20:40:58 +0900 Message-ID: <20261112114058.428-1-26rote@gmail.com> X-Mailer: git-send-email 2.55.0.windows.5 In-Reply-To: <20261001-kaanapali-iris-v4-4-642f9ac5e699@oss.qualcomm.com> References: <20261001-kaanapali-iris-v4-0-642f9ac5e699@oss.qualcomm.com> <20261001-kaanapali-iris-v4-4-642f9ac5e699@oss.qualcomm.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On Thu, 01 Oct 2026 20:47:24 +0530, Vikash Garodia wrote: > + .inst_caps = &platform_inst_cap_sm8550, I ran 8K streams on the Lenovo Y700 Gen 5 (TB323FU, Kaanapali), on v7.3 with an earlier version of this platform data that also uses platform_inst_cap_sm8550, plus local line buffer fixes for 10-bit output. Streams of 7680x4320, 30 frames, made with ffmpeg's testsrc2 and software encoders; decoded output compared against the software decoders: - HEVC 8-bit, VP9, AV1 8-bit and AV1 10-bit decode: bit-exact. - H.264 decode: 2 of 30 frames output, nothing in the kernel log. - H.264 encode: 3 of 30 frames decodable; HEVC encode: no output. - HEVC Main10 decode: reset the board until I applied commit 200473c198b2 ("media: iris: Fix iova allocation from restrict region", not in v7.3); with it, the session fails with -ENOMEM: the 222 MiB co-located MV buffer finds no contiguous IOVA range after the 11 capture buffers. At 1080p and 4K, H.264 and HEVC decode and encode pass, and HEVC Main10 decodes bit-exact. With the SM8550 instance caps, VIDIOC_ENUM_FRAMESIZES reports 96x96 - 8192x8192 on the decoder and on the encoder. If H.264 decode and H.264/HEVC encode are limited below 8K on this SoC, could the platform data advertise the limit per codec, so that userspace gets an error at S_FMT instead of a silent failure? Thanks, Joonhoe Kim