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ARM: dts: msm: Add iommu coherent test device for msm8998

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Added a new iommu test device which is dma-coherent. This
test device will be used for validating buffer coherency.

Change-Id: Iea1c57fd2cd5d71de2f26932d21cae8102fb918e
Signed-off-by: Sudarshan Rajagopalan <sudaraja@codeaurora.org>
This commit is contained in:
Sudarshan Rajagopalan 2017-04-27 13:38:21 -07:00 • committed by Gerrit - the friendly Code Review server
parent f1a10f1598
commit edeb290f5d
1 changed files with 12 additions and 0 deletions
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12
arch/arm/boot/dts/qcom/msm-arm-smmu-8998.dtsi
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@ -176,4 +176,16 @@
*/
iommus = <&mmss_smmu 42>;
};
iommu_coherent_test_device {
compatible = "iommu-debug-test";
/*
* 43 shouldn't be used by anyone on the mmss_smmu. We just
* need _something_ here to get this node recognized by the
* SMMU driver. Our test uses ATOS, which doesn't use SIDs
* anyways, so using a dummy value is ok.
*/
iommus = <&mmss_smmu 43>;
dma-coherent;
};
};