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
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index b36ef33..4223040 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -766,9 +766,9 @@
prop = ofnode_read_prop(node, "ranges", &len);
if (!prop)
return -EINVAL;
- pci_addr_cells = ofnode_read_addr_cells(node);
- addr_cells = ofnode_read_addr_cells(parent_node);
- size_cells = ofnode_read_size_cells(node);
+ pci_addr_cells = ofnode_read_simple_addr_cells(node);
+ addr_cells = ofnode_read_simple_addr_cells(parent_node);
+ size_cells = ofnode_read_simple_size_cells(node);
/* PCI addresses are always 3-cells */
len /= sizeof(u32);