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[66.90.144.107]) by smtp.gmail.com with ESMTPSA id g8-20020a056830160800b0060548e5f69csm4344925otr.2.2022.04.25.17.56.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Apr 2022 17:56:26 -0700 (PDT) Received: (nullmailer pid 659909 invoked by uid 1000); Tue, 26 Apr 2022 00:56:25 -0000 Date: Mon, 25 Apr 2022 19:56:25 -0500 From: Rob Herring To: Sven Peter Cc: linux-arm-kernel@lists.infradead.org, linux-nvme@lists.infradead.org, Christoph Hellwig , Krzysztof Kozlowski , Alyssa Rosenzweig , Rob Herring , Marc Zyngier , Hector Martin , Sagi Grimberg , Jens Axboe , Keith Busch , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Arnd Bergmann Subject: Re: [PATCH v2 1/6] dt-bindings: iommu: Add Apple SART DMA address filter Message-ID: References: <20220415142055.30873-1-sven@svenpeter.dev> <20220415142055.30873-2-sven@svenpeter.dev> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220415142055.30873-2-sven@svenpeter.dev> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220425_175628_129791_FFBAFB26 X-CRM114-Status: GOOD ( 13.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 15 Apr 2022 16:20:50 +0200, Sven Peter wrote: > Apple SoCs such as the M1 come with a simple DMA address filter called > SART. Unlike a real IOMMU no pagetables can be configured but instead > DMA transactions can be allowed for up to 16 paddr regions. The consumer > also needs special support since not all DMA allocations have to be > added to this filter. > > Signed-off-by: Sven Peter > --- > v1 -> v2: > - Moved to bindings/iommu since it is "Close enough to an IOMMU in > terms of its purpose" (Rob Herring) > > .../devicetree/bindings/iommu/apple,sart.yaml | 52 +++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 53 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iommu/apple,sart.yaml > Reviewed-by: Rob Herring _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel