From: Rob Herring <robh@kernel.org>
To: Sumit Garg <sumit.garg@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
andersson@kernel.org, konradybcio@kernel.org, krzk+dt@kernel.org,
conor+dt@kernel.org, akhilpo@oss.qualcomm.com,
vikash.garodia@oss.qualcomm.com,
dikshita.agarwal@oss.qualcomm.com, robin.clark@oss.qualcomm.com,
lumag@kernel.org, loic.poulain@oss.qualcomm.com,
jorge.ramirez@oss.qualcomm.com, linux-kernel@vger.kernel.org,
Sumit Garg <sumit.garg@oss.qualcomm.com>
Subject: Re: [PATCH v3 0/3] arm64: dts: qcom: agatti: Fix IOMMU DT properties
Date: Thu, 22 Jan 2026 11:22:22 -0600 [thread overview]
Message-ID: <20260122172222.GA2670019-robh@kernel.org> (raw)
In-Reply-To: <20260122121042.579270-1-sumit.garg@kernel.org>
On Thu, Jan 22, 2026 at 05:40:39PM +0530, Sumit Garg wrote:
> From: Sumit Garg <sumit.garg@oss.qualcomm.com>
>
> Fix IOMMU DT propeties for GPU, display and video peripherals via
> dropping SMMU stream IDs which relates to secure context bank.
>
> This problem only surfaced when the Gunyah based firmware stack is
> ported on Agatti replacing the legacy QHEE based firmware stack. Assigning
> Linux kernel (HLOS) VMID to secure context bank stream IDs is treated
> as a fault by Gunyah hypervisor which were previously ignored by QHEE
> hypervisor.
>
> The DT changes should be backwards compatible with legacy QHEE based
> firmware stack too.
To avoid intermittent warnings, Bjorn should pick up the whole series.
Rob
next prev parent reply other threads:[~2026-01-22 17:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-22 12:10 [PATCH v3 0/3] arm64: dts: qcom: agatti: Fix IOMMU DT properties Sumit Garg
2026-01-22 12:10 ` [PATCH v3 1/3] dt-bindings: display: msm: qcm2290-mdss: Fix iommus property Sumit Garg
2026-01-22 17:22 ` Rob Herring (Arm)
2026-01-22 12:10 ` [PATCH v3 2/3] dt-bindings: media: venus: " Sumit Garg
2026-01-22 17:22 ` Rob Herring (Arm)
2026-01-22 12:10 ` [PATCH v3 3/3] arm64: dts: qcom: agatti: Fix IOMMU DT properties Sumit Garg
2026-01-22 17:22 ` Rob Herring [this message]
2026-03-02 12:53 ` [PATCH v3 0/3] " Sumit Garg
2026-03-04 19:09 ` Bjorn Andersson
2026-03-05 6:34 ` Sumit Garg
2026-03-24 3:42 ` Bjorn Andersson
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