dm: core: Add address operations on device tree references
Add functions to add addresses in the device tree using ofnode references.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index e6c9a28..ac312d6 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -11,6 +11,7 @@
#include <fdt_support.h>
#include <libfdt.h>
#include <dm/of_access.h>
+#include <dm/of_addr.h>
#include <dm/ofnode.h>
#include <linux/err.h>
@@ -195,6 +196,32 @@
return -EINVAL;
}
+fdt_addr_t ofnode_get_addr_index(ofnode node, int index)
+{
+ if (ofnode_is_np(node)) {
+ const __be32 *prop_val;
+ uint flags;
+ u64 size;
+
+ prop_val = of_get_address(
+ (struct device_node *)ofnode_to_np(node), index,
+ &size, &flags);
+ if (!prop_val)
+ return FDT_ADDR_T_NONE;
+ return be32_to_cpup(prop_val);
+ } else {
+ return fdt_get_base_address(gd->fdt_blob,
+ ofnode_to_offset(node));
+ }
+
+ return FDT_ADDR_T_NONE;
+}
+
+fdt_addr_t ofnode_get_addr(ofnode node)
+{
+ return ofnode_get_addr_index(node, 0);
+}
+
int ofnode_stringlist_search(ofnode node, const char *property,
const char *string)
{
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
index e8b33c1..149622a 100644
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -245,7 +245,7 @@
const char *ofnode_read_string(ofnode node, const char *propname);
/**
- * ofnode_read_u32_array - Find and read an array of 32 bit integers
+ * ofnode_read_u32_array() - Find and read an array of 32 bit integers
*
* @node: valid node reference to read property from
* @propname: name of the property to read
@@ -317,6 +317,27 @@
int ofnode_read_size(ofnode node, const char *propname);
/**
+ * ofnode_get_addr_index() - get an address from a node
+ *
+ * This reads the register address from a node
+ *
+ * @node: node to read from
+ * @index: Index of address to read (0 for first)
+ * @return address, or FDT_ADDR_T_NONE if not present or invalid
+ */
+phys_addr_t ofnode_get_addr_index(ofnode node, int index);
+
+/**
+ * ofnode_get_addr() - get an address from a node
+ *
+ * This reads the register address from a node
+ *
+ * @node: node to read from
+ * @return address, or FDT_ADDR_T_NONE if not present or invalid
+ */
+phys_addr_t ofnode_get_addr(ofnode node);
+
+/**
* ofnode_stringlist_search() - find a string in a string list and return index
*
* Note that it is possible for this function to succeed on property values