Add the sc7280 SMMU to the platforms that have TBUs. This will allow
to validate the DT files against the json schema.

Signed-off-by: Georgi Djakov <quic_c_gdjako@quicinc.com>
---
 Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
index a610af2c7e5e..e983660a8f31 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
@@ -337,7 +337,9 @@ allOf:
       properties:
         compatible:
           contains:
-            const: qcom,sdm845-smmu-500
+            enum:
+              - qcom,sc7280-smmu-500
+              - qcom,sdm845-smmu-500
     then:
       patternProperties:
         "^tbu@[0-9a-f]+":