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ALIAS_RESOLVED(0.00)[]; ASN(0.00)[asn:22843, ipnet:205.220.180.0/24, country:US]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[] X-Rspamd-Server: lists.trustedfirmware.org X-Rspamd-Queue-Id: 831AE409FE X-Spamd-Bar: ---- Message-ID-Hash: 7XWZHKHXZEHV2UD47JNNQLCE7DTXF3OM X-Message-ID-Hash: 7XWZHKHXZEHV2UD47JNNQLCE7DTXF3OM X-MailFrom: jorge.ramirez@oss.qualcomm.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-op-tee.lists.trustedfirmware.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Sumit Garg , Jorge Ramirez , vikash.garodia@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-media@vger.kernel.org, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, ath12k@lists.infradead.org, linux-remoteproc@vger.kernel.org, andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, robin.clark@oss.qualcomm.com, sean@poorly.run, akhilpo@oss.qualcomm.com, lumag@kernel.org, abhinav.kumar@linux.dev, jesszhan0024@gmail.com, marijn.suijten@somainline.org, airlied@gmail.com, simona@ffwll.ch, dikshita.agarwal@oss.qualcomm.com, bod@kernel.org, mchehab@kernel.org, elder@kernel.org, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, jjohnson@kernel.org, mathieu.poirier@linaro.org, mukesh.ojha@oss.qualcomm.com, pavan.kondeti@oss.qualcom m.com, tonyh@qti.qualcomm.com, vignesh.viswanathan@oss.qualcomm.com, srinivas.kandagatla@oss.qualcomm.com, amirreza.zarrabi@oss.qualcomm.com, op-tee@lists.trustedfirmware.org, apurupa@qti.qualcomm.com, skare@qti.qualcomm.com, harshal.dev@oss.qualcomm.com, linux-kernel@vger.kernel.org, Sumit Garg X-Mailman-Version: 3.3.5 Precedence: list List-Id: Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: Jorge Ramirez via OP-TEE Reply-To: Jorge Ramirez On 07/04/26 15:14:22, Trilok Soni wrote: > On 4/6/2026 4:42 AM, Sumit Garg wrote: > > Hi Jorge, > > > > On Fri, Apr 03, 2026 at 11:37:07AM +0200, Jorge Ramirez wrote: > >> On 27/03/26 18:40:39, Sumit Garg wrote: > >>> From: Sumit Garg > >>> > >>> Switch qcom media client drivers over to generic PAS TZ APIs. Generic PAS > >>> TZ service allows to support multiple TZ implementation backends like QTEE > >>> based SCM PAS service, OP-TEE based PAS service and any further future TZ > >>> backend service. > >> > >> OP-TEE based PAS service relies on the linux driver to configure the > >> iommu (just as it is done on the no_tz case). This generic patch does > >> not cover that requirement. > > > > That's exactly the reason why the kodiak EL2 dtso disables venus by > > default in patch #1 due to missing IOMMU configuration. > > > >> > >> Because of that, it is probably better if the commit message doesnt > >> mention OP-TEE and instead maybe indicate that PAS wll support TEEs that > >> implement the same restrictions that QTEE (ie, iommu configuration). > > > > The scope for this patch is to just adopt the generic PAS layer without > > affecting the client functionality. the patchset cover letter + the commit message + the OP-TEE pull request being referenced gives the ilusion to users that with the current set they will get something functional (they will get a broken video platform instead if they try to use OP-TEE). That was the point I was making: IMO the commit message walks on a thin line of "completeness" QTEE and OP-TEE at this time implement different use cases (Venus with QTEE runs with Linux on EL1 , OP-TEE runs with Linux on EL2). So maybe worth mentioning this divergence. > > > >> > >> I can send an RFC for OP-TEE support based on the integration work being > >> carried out here [1] > > > > @Vikash may know better details about support for IOMMU configuration > > for venus since it's a generic functionality missing when Linux runs in > > EL2 whether it's with QTEE or OP-TEE. > > > > However, feel free to propose your work to initiate discussions again. > > Vikas and team depends on some of the IOMMU patches to get accepted > before they enable the EL2 venus support. Please reach out to him > and Prakash Gupta at Qualcomm. isn't Vikash in this thread, he can ping me too no :) ? but sure, we'll synch later