From 878d68c0c357ff62120d5783d950f34ecd1065d9 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 12 Jun 2017 06:21:31 -0600 Subject: 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 Tested-by: Marcel Ziswiler Tested-on: Beaver, Jetson-TK1 --- include/dm/of_access.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include/dm/of_access.h') diff --git a/include/dm/of_access.h b/include/dm/of_access.h index d2827001e2..c5ea391aec 100644 --- a/include/dm/of_access.h +++ b/include/dm/of_access.h @@ -60,6 +60,26 @@ int of_n_addr_cells(const struct device_node *np); */ int of_n_size_cells(const struct device_node *np); +/** + * of_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 of_simple_addr_cells(const struct device_node *np); + +/** + * of_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 of_simple_size_cells(const struct device_node *np); + /** * of_find_property() - find a property in a node * -- cgit v1.2.3