linux-kernel - Re: [PATCH v3] arm64: defconfig: Enable QCOMTEE on Qualcomm SM8650+

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Message-ID: <a27tcbxmv4pwwvtxddeerrps6nasqpah35mzypz3p5ju2awigg@owrhgvasvuhe>
Date: Fri, 2 Jan 2026 12:23:29 -0600
From: Bjorn Andersson <andersson@...nel.org>
To: Harshal Dev <harshal.dev@....qualcomm.com>
Cc: Sumit Garg <sumit.garg@...nel.org>, 
	Bjorn Andersson <bjorn.andersson@....qualcomm.com>, Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>, 
	Krzysztof Kozlowski <krzk@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>, 
	Jens Wiklander <jens.wiklander@...aro.org>, Amirreza Zarrabi <amirreza.zarrabi@....qualcomm.com>, 
	Arnd Bergmann <arnd@...db.de>, Geert Uytterhoeven <geert+renesas@...der.be>, 
	op-tee@...ts.trustedfirmware.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] arm64: defconfig: Enable QCOMTEE on Qualcomm SM8650+

On Fri, Jan 02, 2026 at 02:21:57PM +0530, Harshal Dev wrote:
[..]
> 
> 
> I agree that the defconfig change effectively enables the driver for all arm64
> boards, not just Qualcomm SoC based ones. To clarify this in the commit message,
> let me explicitly state the following:
> - Why we are enabling it for all arm64 boards.
> - From which Qualcomm SoC onwards the driver is applicable to.
> - What functionality the driver provides.
> - How it's functionality has been tested and on which board.
> 
> "
> arm64: defconfig: Enable QCOMTEE module for QTEE-enabled Qualcomm SoCs
> 
> All Qualcomm SoCs starting from SM8650 provide access to the Qualcomm Trusted
> Execution Environment (QTEE) through the SMCInvoke interface, implemented by
> the QCOMTEE driver. QTEE runs in the Secure World domain on ARM64 CPUs and
> exposes secure services to Linux running in the Normal World domain.
> 
> This change enables the QCOMTEE driver as a module to support communication
> with QTEE.
> 
> QCOMTEE has been tested on a Qualcomm RB3Gen2 board by loading and executing
> a Trusted Application via tests hosted at github.com/qualcomm/minkipc.
> "

This commit message looks good to me.

It also makes it clear that all platforms up to (not including) SM8650
_only_ supports QSEECOM, and hence makes it clear that we have reason to
support both mechanisms.

Thank you,
Bjorn