scripts: simple-bus warning suppression

Single-bus warning in python parsing of device tree is suppressed if
this is also suppresed in the device tree compiler.

Signed-off-by: Andrei Gansari <[email protected]>

Author: agansari

scripts/dts/edtlib.py

@@ -82,6 +82,9 @@
                   TYPE_PHANDLE, TYPE_PHANDLES_AND_NUMS
 from grutils import Graph
 
+
+dtc_flags = ""
+
 #
 # Public classes
 #
@@ -776,6 +779,8 @@ class Node:
       The flash controller for the node. Only meaningful for nodes representing
       flash partitions.
     """
+    global dtc_flags
+
     @property
     def name(self):
         "See the class docstring"
@@ -797,9 +802,12 @@ def unit_addr(self):
 
         addr = _translate(addr, self._node)
 
-        if self.regs and self.regs[0].addr != addr:
-            self.edt._warn("unit-address and first reg (0x{:x}) don't match "
-                           "for {}".format(self.regs[0].addr, self.name))
+        # This code is redundant, it checks the same thing as simple_bus_reg in
+        # dtc, we disable it in python if it's suppressed in dtc.
+        if "-Wno-simple_bus_reg" not in dtc_flags:
+            if self.regs and self.regs[0].addr != addr:
+                self.edt._warn("unit-address and first reg (0x{:x}) don't match "
+                               "for {}".format(self.regs[0].addr, self.name))
 
         return addr
 

scripts/dts/gen_defines.py

@@ -45,6 +45,7 @@ def main():
     conf_file = open(args.conf_out, "w", encoding="utf-8")
     header_file = open(args.header_out, "w", encoding="utf-8")
     flash_area_num = 0
+    edtlib.dtc_flags = args.dtc_flags
 
     write_top_comment(edt)
 
@@ -89,6 +90,7 @@ def parse_args():
 
     parser = argparse.ArgumentParser()
     parser.add_argument("--dts", required=True, help="DTS file")
+    parser.add_argument("--dtc-flags", help="extra device tree parameters")
     parser.add_argument("--bindings-dirs", nargs='+', required=True,
                         help="directory with bindings in YAML format, "
                         "we allow multiple")