--- zzzz-none-000/linux-4.4.271/Documentation/devicetree/bindings/iommu/arm,smmu.txt	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/Documentation/devicetree/bindings/iommu/arm,smmu.txt	2023-04-19 10:22:27.000000000 +0000
@@ -16,6 +16,7 @@
                         "arm,mmu-400"
                         "arm,mmu-401"
                         "arm,mmu-500"
+                        "cavium,smmu-v2"
 
                   depending on the particular implementation and/or the
                   version of the architecture implemented.
@@ -55,6 +56,14 @@
                   aliases of secure registers have to be used during
                   SMMU configuration.
 
+- qcom,skip-init : Disable resetting configuration for all context banks
+                  during device reset.  This is useful for targets where
+                  some context banks are dedicated to other execution
+                  environments outside of Linux and those other EEs are
+                  programming their own stream match tables, SCTLR, etc.
+                  Without setting this option we will trample on their
+                  configuration.
+
 Example:
 
         smmu {