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[2003:e4:1f02:3e00:f22f:74ff:fe1f:3a53]) by smtp.gmail.com with ESMTPSA id r19sm1515005wrg.74.2021.07.14.00.30.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Jul 2021 00:30:52 -0700 (PDT) Date: Wed, 14 Jul 2021 09:32:51 +0200 From: Thierry Reding To: Vidya Sagar Cc: robh+dt@kernel.org, jonathanh@nvidia.com, devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, kthota@nvidia.com, mmaddireddy@nvidia.com, sagar.tv@gmail.com Subject: Re: [PATCH V2] arm64: tegra: Enable SMMU support for PCIe on Tegra194 Message-ID: References: <20210713044414.25536-1-vidyas@nvidia.com> <20210713113546.20286-1-vidyas@nvidia.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="BF9dEAmvU+kEpJVR" Content-Disposition: inline In-Reply-To: <20210713113546.20286-1-vidyas@nvidia.com> User-Agent: Mutt/2.1.1 (e2a89abc) (2021-07-12) Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org --BF9dEAmvU+kEpJVR Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jul 13, 2021 at 05:05:46PM +0530, Vidya Sagar wrote: > As of commit c7289b1c8a4e ("arm64: tegra: Enable SMMU support on > Tegra194"), SMMU support is enabled system-wide on Tegra194. However, > there was a bit of overlap between the SMMU enablement and the PCIe > support addition, so the PCIe device tree nodes are missing the iommus > and interconnects properties. This in turn leads to SMMU faults for > these devices, since by default the ARM SMMU will fault. >=20 > Add the iommus and interconnects properties to all the PCIe device > tree nodes to restore their functionality. >=20 > Fixes: c7289b1c8a4e ("arm64: tegra: Enable SMMU support on Tegra194") >=20 > Signed-off-by: Vidya Sagar > Reviewed-by: Jon Hunter > --- > V2: > * Changed interconnect-names from "dma-mem", "dma-mem" -> "dma-mem", "wri= te" > * Added Reviewed-by: Jon Hunter >=20 > arch/arm64/boot/dts/nvidia/tegra194.dtsi | 60 +++++++++++++++++++++--- > 1 file changed, 54 insertions(+), 6 deletions(-) Applied, thanks. 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