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authorSimon Glass <sjg@chromium.org>2017-06-13 21:10:06 -0600
committerSimon Glass <sjg@chromium.org>2017-07-11 10:08:19 -0600
commit2cce586651bbeb0489c6cc6f04489f65bd039b9e (patch)
treeb83684261b3ad2ecebc49ae37010e98a145c45af /tools
parent564cf25d5b1b90ae790e2b7619292935f40b13e6 (diff)
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dtoc: Support multiple compatible strings in a node
Sometimes a node will have multiple compatible strings. Drivers may use one or the other so the best approach seems to be to #define them to be equivalent. Update dtoc to support this. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'tools')
-rwxr-xr-xtools/dtoc/dtoc.py28
1 files changed, 21 insertions, 7 deletions
diff --git a/tools/dtoc/dtoc.py b/tools/dtoc/dtoc.py
index 08e35f1..c0ab13a 100755
--- a/tools/dtoc/dtoc.py
+++ b/tools/dtoc/dtoc.py
@@ -88,6 +88,7 @@ class DtbPlatdata:
self._phandle_node = {}
self._outfile = None
self._lines = []
+ self._aliases = {}
def SetupOutput(self, fname):
"""Set up the output destination
@@ -159,9 +160,10 @@ class DtbPlatdata:
C identifier for the first compatible string
"""
compat = node.props['compatible'].value
+ aliases = []
if type(compat) == list:
- compat = compat[0]
- return Conv_name_to_c(compat)
+ compat, aliases = compat[0], compat[1:]
+ return Conv_name_to_c(compat), [Conv_name_to_c(a) for a in aliases]
def ScanDtb(self):
"""Scan the device tree to obtain a tree of notes and properties
@@ -239,7 +241,7 @@ class DtbPlatdata:
"""
structs = {}
for node in self._valid_nodes:
- node_name = self.GetCompatName(node)
+ node_name, _ = self.GetCompatName(node)
fields = {}
# Get a list of all the valid properties in this node.
@@ -263,12 +265,17 @@ class DtbPlatdata:
upto = 0
for node in self._valid_nodes:
- node_name = self.GetCompatName(node)
+ node_name, _ = self.GetCompatName(node)
struct = structs[node_name]
for name, prop in node.props.items():
if name not in PROP_IGNORE_LIST and name[0] != '#':
prop.Widen(struct[name])
upto += 1
+
+ struct_name, aliases = self.GetCompatName(node)
+ for alias in aliases:
+ self._aliases[alias] = struct_name
+
return structs
def ScanPhandles(self):
@@ -327,13 +334,17 @@ class DtbPlatdata:
self.Out(';\n')
self.Out('};\n')
+ for alias, struct_name in self._aliases.iteritems():
+ self.Out('#define %s%s %s%s\n'% (STRUCT_PREFIX, alias,
+ STRUCT_PREFIX, struct_name))
+
def OutputNode(self, node):
"""Output the C code for a node
Args:
node: node to output
"""
- struct_name = self.GetCompatName(node)
+ struct_name, _ = self.GetCompatName(node)
var_name = Conv_name_to_c(node.name)
self.Buf('static struct %s%s %s%s = {\n' %
(STRUCT_PREFIX, struct_name, VAL_PREFIX, var_name))
@@ -384,8 +395,11 @@ class DtbPlatdata:
"""Generate device defintions for the platform data
This writes out C platform data initialisation data and
- U_BOOT_DEVICE() declarations for each valid node. See the
- documentation in README.of-plat for more information.
+ U_BOOT_DEVICE() declarations for each valid node. Where a node has
+ multiple compatible strings, a #define is used to make them equivalent.
+
+ See the documentation in doc/driver-model/of-plat.txt for more
+ information.
"""
self.Out('#include <common.h>\n')
self.Out('#include <dm.h>\n')