Finding out how many cells a node's children use for addresses and sizes
currently requires calling the raw fdt_address_cells()/fdt_size_cells()
wrappers with the private FdtRo._fdt buffer, as the class exposes no
methods for them.
Add them to FdtRo alongside the other node accessors.
This is a backport of dtc commit 3750493c8b0f ("pylibfdt: Add
address_cells() and size_cells()").
Link: https://github.com/dgibson/dtc/pull/190
Signed-off-by: David Gibson <[email protected]>
Signed-off-by: Alexey Charkov <[email protected]>
---
scripts/dtc/pylibfdt/libfdt.i_shipped | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/scripts/dtc/pylibfdt/libfdt.i_shipped
b/scripts/dtc/pylibfdt/libfdt.i_shipped
index c00e74a46b76..1983ebaee335 100644
--- a/scripts/dtc/pylibfdt/libfdt.i_shipped
+++ b/scripts/dtc/pylibfdt/libfdt.i_shipped
@@ -306,6 +306,38 @@ class FdtRo(object):
check_err(val[0], quiet)
return val[1:]
+ def address_cells(self, nodeoffset, quiet=()):
+ """Return the number of address cells used by a node's children
+
+ Args:
+ nodeoffset: Offset of the node to check
+ quiet: Errors to ignore (empty to raise on all errors)
+
+ Returns:
+ Number of address cells used by the children of @nodeoffset
+
+ Raises:
+ FdtException if the node has an invalid #address-cells property,
+ or another error occurs
+ """
+ return check_err(fdt_address_cells(self._fdt, nodeoffset), quiet)
+
+ def size_cells(self, nodeoffset, quiet=()):
+ """Return the number of size cells used by a node's children
+
+ Args:
+ nodeoffset: Offset of the node to check
+ quiet: Errors to ignore (empty to raise on all errors)
+
+ Returns:
+ Number of size cells used by the children of @nodeoffset
+
+ Raises:
+ FdtException if the node has an invalid #size-cells property, or
+ another error occurs
+ """
+ return check_err(fdt_size_cells(self._fdt, nodeoffset), quiet)
+
def subnode_offset(self, parentoffset, name, quiet=()):
"""Get the offset of a named subnode
--
2.54.0
