Provide easy helpers for reading integer, string and boolean values from device-tree properties.
Signed-off-by: Simon Glass sjg@chromium.org ---
tools/dtoc/fdt_util.py | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
diff --git a/tools/dtoc/fdt_util.py b/tools/dtoc/fdt_util.py index 32f41d7..3a10838 100644 --- a/tools/dtoc/fdt_util.py +++ b/tools/dtoc/fdt_util.py @@ -59,3 +59,28 @@ def EnsureCompiled(fname): args.append(dts_input) command.Run('dtc', *args) return dtb_output + +def GetInt(node, propname, default=None): + prop = node.props.get(propname) + if not prop: + return default + value = fdt32_to_cpu(prop.value) + if type(value) == type(list): + raise ValueError("Node '%s' property '%' has list value: expecting" + "a single integer" % (node.name, propname)) + return value + +def GetString(node, propname, default=None): + prop = node.props.get(propname) + if not prop: + return default + value = prop.value + if type(value) == type(list): + raise ValueError("Node '%s' property '%' has list value: expecting" + "a single string" % (node.name, propname)) + return value + +def GetBool(node, propname, default=False): + if propname in node.props: + return True + return default