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| author | Sudarshan Rajagopalan <sudaraja@codeaurora.org> | 2017-04-27 13:38:21 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2017-05-01 17:14:20 -0700 |
| commit | edeb290f5dc82d581de36a1f4b78ef1497d0eafc (patch) | |
| tree | 8f320632668fe167537367e00c51092affda5cbb | |
| parent | f1a10f1598632dc7ab10b369083a21ff68b8398b (diff) | |
ARM: dts: msm: Add iommu coherent test device for msm8998
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>
| -rw-r--r-- | arch/arm/boot/dts/qcom/msm-arm-smmu-8998.dtsi | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/qcom/msm-arm-smmu-8998.dtsi b/arch/arm/boot/dts/qcom/msm-arm-smmu-8998.dtsi index ecfff13f9355..da28e56bc2df 100644 --- a/arch/arm/boot/dts/qcom/msm-arm-smmu-8998.dtsi +++ b/arch/arm/boot/dts/qcom/msm-arm-smmu-8998.dtsi @@ -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; + }; }; |