diff --git a/tools/dtoc/dtb_platdata.py b/tools/dtoc/dtb_platdata.py
index 23cfda2f88..0a54188348 100644
--- a/tools/dtoc/dtb_platdata.py
+++ b/tools/dtoc/dtb_platdata.py
@@ -141,17 +141,19 @@ class DtbPlatdata(object):
         _valid_nodes: A list of Node object with compatible strings
         _include_disabled: true to include nodes marked status = "disabled"
         _outfile: The current output file (sys.stdout or a real file)
+        _warning_disabled: true to disable warnings about driver names not found
         _lines: Stashed list of output lines for outputting in the future
         _aliases: Dict that hold aliases for compatible strings
         _drivers: List of valid driver names found in drivers/
         _driver_aliases: Dict that holds aliases for driver names
     """
-    def __init__(self, dtb_fname, include_disabled):
+    def __init__(self, dtb_fname, include_disabled, warning_disable):
         self._fdt = None
         self._dtb_fname = dtb_fname
         self._valid_nodes = None
         self._include_disabled = include_disabled
         self._outfile = None
+        self._warning_disable = warning_disable
         self._lines = []
         self._aliases = {}
         self._drivers = []
@@ -177,7 +179,8 @@ class DtbPlatdata(object):
             compat_c_old = compat_c
             compat_c = self._driver_aliases.get(compat_c)
             if not compat_c:
-                print('WARNING: the driver %s was not found in the driver list' % (compat_c_old))
+                if not self._warning_disable: # pragma: no cover
+                    print('WARNING: the driver %s was not found in the driver list' % (compat_c_old))
                 compat_c = compat_c_old
             else: # pragma: no cover
                 aliases_c = [compat_c_old] + aliases_c
@@ -623,7 +626,7 @@ class DtbPlatdata(object):
             nodes_to_output.remove(node)
 
 
-def run_steps(args, dtb_file, include_disabled, output):
+def run_steps(args, dtb_file, include_disabled, output, warning_disable = False):
     """Run all the steps of the dtoc tool
 
     Args:
@@ -635,7 +638,7 @@ def run_steps(args, dtb_file, include_disabled, output):
     if not args:
         raise ValueError('Please specify a command: struct, platdata')
 
-    plat = DtbPlatdata(dtb_file, include_disabled)
+    plat = DtbPlatdata(dtb_file, include_disabled, warning_disable)
     plat.scan_drivers()
     plat.scan_dtb()
     plat.scan_tree()
diff --git a/tools/dtoc/test_dtoc.py b/tools/dtoc/test_dtoc.py
index 8498e8303c..a9b605cac8 100755
--- a/tools/dtoc/test_dtoc.py
+++ b/tools/dtoc/test_dtoc.py
@@ -154,12 +154,12 @@ class TestDtoc(unittest.TestCase):
         """Test output from a device tree file with no nodes"""
         dtb_file = get_dtb_file('dtoc_test_empty.dts')
         output = tools.GetOutputFilename('output')
-        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         with open(output) as infile:
             lines = infile.read().splitlines()
         self.assertEqual(HEADER.splitlines(), lines)
 
-        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output, True)
         with open(output) as infile:
             lines = infile.read().splitlines()
         self.assertEqual(C_HEADER.splitlines() + [''], lines)
@@ -168,7 +168,7 @@ class TestDtoc(unittest.TestCase):
         """Test output from some simple nodes with various types of data"""
         dtb_file = get_dtb_file('dtoc_test_simple.dts')
         output = tools.GetOutputFilename('output')
-        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(HEADER + '''
@@ -193,7 +193,7 @@ struct dtd_sandbox_spl_test_2 {
 };
 ''', data)
 
-        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(C_HEADER + '''
@@ -272,7 +272,7 @@ U_BOOT_DEVICE(pmic_at_9) = {
         """Test output from a node containing a phandle reference"""
         dtb_file = get_dtb_file('dtoc_test_phandle.dts')
         output = tools.GetOutputFilename('output')
-        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(HEADER + '''
@@ -284,7 +284,7 @@ struct dtd_target {
 };
 ''', data)
 
-        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(C_HEADER + '''
@@ -344,7 +344,7 @@ U_BOOT_DEVICE(phandle_source2) = {
         """Test output from a node containing a phandle reference"""
         dtb_file = get_dtb_file('dtoc_test_phandle_single.dts')
         output = tools.GetOutputFilename('output')
-        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(HEADER + '''
@@ -360,7 +360,7 @@ struct dtd_target {
         """Test that phandle targets are generated before their references"""
         dtb_file = get_dtb_file('dtoc_test_phandle_reorder.dts')
         output = tools.GetOutputFilename('output')
-        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(C_HEADER + '''
@@ -390,7 +390,7 @@ U_BOOT_DEVICE(phandle_source2) = {
                                 capture_stderr=True)
         output = tools.GetOutputFilename('output')
         with self.assertRaises(ValueError) as e:
-            dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+            dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         self.assertIn("Cannot parse 'clocks' in node 'phandle-source'",
                       str(e.exception))
 
@@ -400,7 +400,7 @@ U_BOOT_DEVICE(phandle_source2) = {
                                 capture_stderr=True)
         output = tools.GetOutputFilename('output')
         with self.assertRaises(ValueError) as e:
-            dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+            dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         self.assertIn("Node 'phandle-target' has no '#clock-cells' property",
                       str(e.exception))
 
@@ -408,7 +408,7 @@ U_BOOT_DEVICE(phandle_source2) = {
         """Test output from a node with multiple compatible strings"""
         dtb_file = get_dtb_file('dtoc_test_aliases.dts')
         output = tools.GetOutputFilename('output')
-        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(HEADER + '''
@@ -419,7 +419,7 @@ struct dtd_compat1 {
 #define dtd_compat3 dtd_compat1
 ''', data)
 
-        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(C_HEADER + '''
@@ -438,7 +438,7 @@ U_BOOT_DEVICE(spl_test) = {
         """Test output from a node with a 'reg' property with na=2, ns=2"""
         dtb_file = get_dtb_file('dtoc_test_addr64.dts')
         output = tools.GetOutputFilename('output')
-        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(HEADER + '''
@@ -453,7 +453,7 @@ struct dtd_test3 {
 };
 ''', data)
 
-        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(C_HEADER + '''
@@ -490,7 +490,7 @@ U_BOOT_DEVICE(test3) = {
         """Test output from a node with a 'reg' property with na=1, ns=1"""
         dtb_file = get_dtb_file('dtoc_test_addr32.dts')
         output = tools.GetOutputFilename('output')
-        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(HEADER + '''
@@ -502,7 +502,7 @@ struct dtd_test2 {
 };
 ''', data)
 
-        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(C_HEADER + '''
@@ -530,7 +530,7 @@ U_BOOT_DEVICE(test2) = {
         """Test output from a node with a 'reg' property with na=2, ns=1"""
         dtb_file = get_dtb_file('dtoc_test_addr64_32.dts')
         output = tools.GetOutputFilename('output')
-        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(HEADER + '''
@@ -545,7 +545,7 @@ struct dtd_test3 {
 };
 ''', data)
 
-        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(C_HEADER + '''
@@ -582,7 +582,7 @@ U_BOOT_DEVICE(test3) = {
         """Test output from a node with a 'reg' property with na=1, ns=2"""
         dtb_file = get_dtb_file('dtoc_test_addr32_64.dts')
         output = tools.GetOutputFilename('output')
-        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(HEADER + '''
@@ -597,7 +597,7 @@ struct dtd_test3 {
 };
 ''', data)
 
-        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(C_HEADER + '''
@@ -636,7 +636,7 @@ U_BOOT_DEVICE(test3) = {
         dtb_file = get_dtb_file('dtoc_test_bad_reg.dts', capture_stderr=True)
         output = tools.GetOutputFilename('output')
         with self.assertRaises(ValueError) as e:
-            dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+            dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         self.assertIn("Node 'spl-test' reg property is not an int",
                       str(e.exception))
 
@@ -646,7 +646,7 @@ U_BOOT_DEVICE(test3) = {
         dtb_file = get_dtb_file('dtoc_test_bad_reg2.dts', capture_stderr=True)
         output = tools.GetOutputFilename('output')
         with self.assertRaises(ValueError) as e:
-            dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+            dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         self.assertIn("Node 'spl-test' reg property has 3 cells which is not a multiple of na + ns = 1 + 1)",
                       str(e.exception))
 
@@ -654,7 +654,7 @@ U_BOOT_DEVICE(test3) = {
         """Test that a subequent node can add a new property to a struct"""
         dtb_file = get_dtb_file('dtoc_test_add_prop.dts')
         output = tools.GetOutputFilename('output')
-        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(HEADER + '''
@@ -664,7 +664,7 @@ struct dtd_sandbox_spl_test {
 };
 ''', data)
 
-        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output, True)
         with open(output) as infile:
             data = infile.read()
         self._CheckStrings(C_HEADER + '''
@@ -692,12 +692,12 @@ U_BOOT_DEVICE(spl_test2) = {
         """Test output to stdout"""
         dtb_file = get_dtb_file('dtoc_test_simple.dts')
         with test_util.capture_sys_output() as (stdout, stderr):
-            dtb_platdata.run_steps(['struct'], dtb_file, False, '-')
+            dtb_platdata.run_steps(['struct'], dtb_file, False, '-', True)
 
     def testNoCommand(self):
         """Test running dtoc without a command"""
         with self.assertRaises(ValueError) as e:
-            dtb_platdata.run_steps([], '', False, '')
+            dtb_platdata.run_steps([], '', False, '', True)
         self.assertIn("Please specify a command: struct, platdata",
                       str(e.exception))
 
@@ -706,6 +706,6 @@ U_BOOT_DEVICE(spl_test2) = {
         dtb_file = get_dtb_file('dtoc_test_simple.dts')
         output = tools.GetOutputFilename('output')
         with self.assertRaises(ValueError) as e:
-            dtb_platdata.run_steps(['invalid-cmd'], dtb_file, False, output)
+            dtb_platdata.run_steps(['invalid-cmd'], dtb_file, False, output, True)
         self.assertIn("Unknown command 'invalid-cmd': (use: struct, platdata)",
                       str(e.exception))
