diff --git a/llvm/.clang-tidy b/llvm/.clang-tidy
index 3186da43d43d..97fbe23333bd 100644
--- a/llvm/.clang-tidy
+++ b/llvm/.clang-tidy
@@ -1 +1,13 @@
-Checks: '-*,clang-diagnostic-*,llvm-*,misc-*'
+Checks: '-*,clang-diagnostic-*,llvm-*,misc-*,readability-identifier-naming'
+CheckOptions:
+  - key:             readability-identifier-naming.ClassCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.EnumCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.FunctionCase
+    value:           lowerCase
+  - key:             readability-identifier-naming.UnionCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.VariableCase
+    value:           CamelCase
+