linux-kernel - Re: [PATCH V7 4/4] arm64: dts: nvidia: Add nodes for CMDQV

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Message-ID: <aUB7zz8wMJoPSVf7@Asurada-Nvidia>
Date: Mon, 15 Dec 2025 13:21:19 -0800
From: Nicolin Chen <nicolinc@...dia.com>
To: Ashish Mhetre <amhetre@...dia.com>
CC: <will@...nel.org>, <robin.murphy@....com>, <joro@...tes.org>,
	<robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
	<thierry.reding@...il.com>, <jonathanh@...dia.com>, <vdumpa@...dia.com>,
	<jgg@...pe.ca>, <linux-arm-kernel@...ts.infradead.org>,
	<iommu@...ts.linux.dev>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH V7 4/4] arm64: dts: nvidia: Add nodes for CMDQV

On Mon, Dec 15, 2025 at 06:48:19AM +0000, Ashish Mhetre wrote:
> The Command Queue Virtualization (CMDQV) hardware is part of the
> SMMUv3 implementation on NVIDIA Tegra SoCs. It assists in
> virtualizing the command queue for the SMMU.
> 
> Update SMMU compatible strings to use nvidia,tegra264-smmu to enable
> CMDQV support. Add device tree nodes for the CMDQV hardware and enable
> them on the tegra264-p3834 platform where SMMUs are enabled. Each SMMU
> instance is paired with its corresponding CMDQV instance via the
> nvidia,cmdqv property.
> 
> Signed-off-by: Ashish Mhetre <amhetre@...dia.com>

Acked-by: Nicolin Chen <nicolinc@...dia.com>