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[89.212.118.115]) by smtp.gmail.com with ESMTPSA id b6-20020aa7cd06000000b0042617ba63a9sm886885edw.51.2022.04.27.22.35.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Apr 2022 22:35:25 -0700 (PDT) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= To: Joerg Roedel , Will Deacon , iommu@lists.linux-foundation.org, Samuel Holland Cc: Heiko Stuebner , Palmer Dabbelt , linux-riscv@lists.infradead.org, Samuel Holland , Chen-Yu Tsai , Krzysztof Kozlowski , Maxime Ripard , Philipp Zabel , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev Subject: Re: [PATCH 5/5] iommu/sun50i: Ensure the IOMMU can be used for DMA Date: Thu, 28 Apr 2022 07:35:24 +0200 Message-ID: <1762951.8hzESeGDPO@jernej-laptop> In-Reply-To: <20220428010401.11323-6-samuel@sholland.org> References: <20220428010401.11323-1-samuel@sholland.org> <20220428010401.11323-6-samuel@sholland.org> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" Dne =C4=8Detrtek, 28. april 2022 ob 03:04:00 CEST je Samuel Holland napisal= (a): > So far, the driver has relied on arch/arm64/Kconfig to select IOMMU_DMA. > Unsurprisingly, this does not work on RISC-V, so the driver must select > IOMMU_DMA itself. >=20 > Signed-off-by: Samuel Holland Reviewed-by: Jernej Skrabec Best regards, Jernej > --- >=20 > drivers/iommu/Kconfig | 1 + > 1 file changed, 1 insertion(+) >=20 > diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig > index c79a0df090c0..70a0bfa6d907 100644 > --- a/drivers/iommu/Kconfig > +++ b/drivers/iommu/Kconfig > @@ -223,6 +223,7 @@ config SUN50I_IOMMU > depends on ARCH_SUNXI || COMPILE_TEST > select ARM_DMA_USE_IOMMU > select IOMMU_API > + select IOMMU_DMA > help > Support for the IOMMU introduced in the Allwinner H6 SoCs. 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