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 <[email protected]> > > > > 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. > > 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. > > [1] https://github.com/OP-TEE/optee_os/pull/7721#discussion_r3016923507 -Sumit
