dtoc: Add a comment about string replace in conv_name_to_c()

[u-boot] / tools / dtoc / dtb_platdata.py

diff --git a/tools/dtoc/dtb_platdata.py b/tools/dtoc/dtb_platdata.py
index 9923892dc359bf8cd21426b295b197e2c4812bf6..1f85343a9fd2de7532b5f032c7939e20ec5f5df2 100644 (file)
--- a/tools/dtoc/dtb_platdata.py
+++ b/tools/dtoc/dtb_platdata.py
@@ -46,6 +46,9 @@ VAL_PREFIX = 'dtv_'
 def conv_name_to_c(name):
     """Convert a device-tree name to a C identifier
 
+    This uses multiple replace() calls instead of re.sub() since it is faster
+    (400ms for 1m calls versus 1000ms for the 're' version).
+
     Args:
         name:   Name to convert
     Return: