diff options
| author | Simon Glass <sjg@chromium.org> | 2017-06-12 06:21:31 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2017-07-11 10:08:20 -0600 |
| commit | 878d68c0c357ff62120d5783d950f34ecd1065d9 (patch) | |
| tree | b10e1929ab5e2fefa1f786db8c3ce1df089f35a4 /include/dm/ofnode.h | |
| parent | f7d6fcf7aead384ea39bc7aba581e912c3759eaa (diff) | |
dm: core: Add functions to obtain node's address/size cells
The of_n_addr_cells() and of_n_size_cells() functions are useful for
getting the size of addresses in a node, but in a few places U-Boot needs
to obtain the actual property value for a node without walking up the
stack. Add functions for this and just the existing code to use it.
Add a comment to the existing ofnode functions which do not do the right
thing with a flat tree.
This fixes a problem reading PCI addresses.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1
Diffstat (limited to 'include/dm/ofnode.h')
| -rw-r--r-- | include/dm/ofnode.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h index d261a61e91..c3d8db5b16 100644 --- a/include/dm/ofnode.h +++ b/include/dm/ofnode.h @@ -562,6 +562,26 @@ int ofnode_read_addr_cells(ofnode node); int ofnode_read_size_cells(ofnode node); /** + * ofnode_read_simple_addr_cells() - Get the address cells property in a node + * + * This function matches fdt_address_cells(). + * + * @np: Node pointer to check + * @return value of #address-cells property in this node, or 2 if none + */ +int ofnode_read_simple_addr_cells(ofnode node); + +/** + * ofnode_read_simple_size_cells() - Get the size cells property in a node + * + * This function matches fdt_size_cells(). + * + * @np: Node pointer to check + * @return value of #size-cells property in this node, or 2 if none + */ +int ofnode_read_simple_size_cells(ofnode node); + +/** * ofnode_pre_reloc() - check if a node should be bound before relocation * * Device tree nodes can be marked as needing-to-be-bound in the loader stages |