From: Trilok Soni <trilokkumar.soni@oss.qualcomm.com>
To: Sumit Garg <sumit.garg@kernel.org>,
Jorge Ramirez <jorge.ramirez@oss.qualcomm.com>,
vikash.garodia@oss.qualcomm.com
Cc: 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,
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linux-remoteproc@vger.kernel.org, andersson@kernel.org,
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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,
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mathieu.poirier@linaro.org, mukesh.ojha@oss.qualcomm.com,
pavan.kondeti@oss.qualcomm.com, tonyh@qti.qualcomm.com,
vignesh.viswanathan@oss.qualcomm.com,
srinivas.kandagatla@oss.qualcomm.com,
amirreza.zarrabi@oss.qualcomm.com, jens.wiklander@linaro.org,
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 <sumit.garg@oss.qualcomm.com>
Subject: Re: [PATCH v3 11/15] media: qcom: Switch to generic PAS TZ APIs
Date: Tue, 7 Apr 2026 15:14:22 -0700 [thread overview]
Message-ID: <439f9bbf-1ba1-465f-b5af-01ba0ebb86d4@oss.qualcomm.com> (raw)
In-Reply-To: <adOcMsk8a_Clb4WZ@sumit-xelite>
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 <sumit.garg@oss.qualcomm.com>
>>>
>>> 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.
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.
>
>>
>> [1] https://github.com/OP-TEE/optee_os/pull/7721#discussion_r3016923507
>
> -Sumit
next prev parent reply other threads:[~2026-04-07 22:14 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-27 13:10 [PATCH v3 00/15] firmware: qcom: Add OP-TEE PAS service support Sumit Garg
2026-03-27 13:10 ` [PATCH v3 01/15] arm64: dts: qcom: kodiak: Add EL2 overlay Sumit Garg
2026-03-27 13:10 ` [PATCH v3 02/15] firmware: qcom: Add a generic PAS service Sumit Garg
2026-03-27 13:10 ` [PATCH v3 03/15] firmware: qcom_scm: Migrate to " Sumit Garg
2026-03-27 13:10 ` [PATCH v3 04/15] firmware: qcom: Add a PAS TEE service Sumit Garg
2026-03-30 10:36 ` Harshal Dev
2026-04-02 6:23 ` Sumit Garg
2026-03-27 13:10 ` [PATCH v3 05/15] remoteproc: qcom_q6v5_pas: Switch over to generic PAS TZ APIs Sumit Garg
2026-03-27 13:10 ` [PATCH v3 06/15] remoteproc: qcom_q6v5_mss: Switch " Sumit Garg
2026-03-27 13:10 ` [PATCH v3 07/15] soc: qcom: mdtloader: " Sumit Garg
2026-03-27 13:10 ` [PATCH v3 08/15] remoteproc: qcom_wcnss: " Sumit Garg
2026-03-27 13:10 ` [PATCH v3 09/15] remoteproc: qcom: Select QCOM_PAS generic service Sumit Garg
2026-03-27 13:10 ` [PATCH v3 10/15] drm/msm: Switch to generic PAS TZ APIs Sumit Garg
2026-03-27 13:10 ` [PATCH v3 11/15] media: qcom: " Sumit Garg
2026-04-03 9:37 ` Jorge Ramirez
2026-04-06 11:42 ` Sumit Garg
2026-04-07 22:14 ` Trilok Soni [this message]
2026-04-08 7:32 ` Jorge Ramirez
2026-03-27 13:10 ` [PATCH v3 12/15] net: ipa: " Sumit Garg
2026-03-27 13:10 ` [PATCH v3 13/15] wifi: ath12k: " Sumit Garg
2026-03-27 13:10 ` [PATCH v3 14/15] firmware: qcom_scm: Remove SCM PAS wrappers Sumit Garg
2026-03-27 13:10 ` [PATCH v3 15/15] MAINTAINERS: Add maintainer entry for Qualcomm PAS TZ service Sumit Garg
2026-04-06 15:09 ` [PATCH v3 00/15] firmware: qcom: Add OP-TEE PAS service support Bjorn Andersson
2026-04-07 4:54 ` Sumit Garg
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