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[104.48.214.220]) by smtp.gmail.com with ESMTPSA id 5614622812f47-46d90447177sm4485675b6e.7.2026.04.03.20.31.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Apr 2026 20:31:46 -0700 (PDT) From: Steev Klimaszewski To: dmitry.baryshkov@oss.qualcomm.com Cc: abhinav.kumar@linux.dev, andersson@kernel.org, bod@kernel.org, bryan.odonoghue@linaro.org, conor+dt@kernel.org, david@ixit.cz, devicetree@vger.kernel.org, dikshita.agarwal@oss.qualcomm.com, johan+linaro@kernel.org, konrad.dybcio@oss.qualcomm.com, konradybcio@kernel.org, krzk+dt@kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, mchehab@kernel.org, robh@kernel.org, stanimir.varbanov@linaro.org, threeway@gmail.com, vikash.garodia@oss.qualcomm.com Subject: Re: media: iris: enable SM8350 and SC8280XP support Date: Fri, 3 Apr 2026 22:31:45 -0500 Message-ID: <20260404033145.10625-1-threeway@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Bryan, Dmitry, Vikash, > > > But these logs don't capture, which buffers are causing the IOMMU error. > > > > I'd be interested to see if we can run this test on venus - instead of iris. > At least when I tried testing it, venus wouldn't even boot the > firmware on SC8280XP, citing UC_REGION error: > 2026-04-03T01:51:05.376407+03:00 rohan kernel: qcom-venus > aa00000.video-codec: non legacy binding > 2026-04-03T01:51:05.437232+03:00 rohan kernel: qcom-venus > aa00000.video-codec: invalid setting for UC_REGION > 2026-04-03T01:51:05.437838+03:00 rohan kernel: qcom-venus > aa00000.video-codec: failed to reset venus core > 2026-04-03T01:51:05.437850+03:00 rohan kernel: qcom-venus > aa00000.video-codec: probe with driver qcom-venus failed with error > -22 The same is observed on the X13s, so venus doesn't load. > I think it was captured by Steev: > > This is much better than the previous venus patchset where accessing the > > hardware decoding would cause the machine to hard reset at least! Indeed, the older venus patches would simply force the system to hard reset in EL1, and in EL2 there is a fault (but the system recovers without the hard reset.) I do have a further question, isn't the information we need somewhere inside a TZ managed context bank? Can we even see in there from userspace? I really am out of my league here, but I'm willing to do any testing needed on the hardware and I can use b4 with the best of them ;) -- steev