fdt: Add device tree memory bindings
Support a default memory bank, specified in reg, as well as
board-specific memory banks in subtree board-id nodes.
This allows memory information to be provided in the device tree,
rather than hard-coded in, which will make it simpler to handle
similar devices with different memory banks, as the board-id values
or masks can be used to match devices.
Signed-off-by: Michael Pratt <mpratt@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
diff --git a/include/fdt_support.h b/include/fdt_support.h
index e6c43ea..a9a0078 100644
--- a/include/fdt_support.h
+++ b/include/fdt_support.h
@@ -283,6 +283,16 @@
int fdt_overlay_apply_verbose(void *fdt, void *fdto);
+/**
+ * fdt_get_cells_len() - Get the length of a type of cell in top-level nodes
+ *
+ * Returns the length of the cell type in bytes (4 or 8).
+ *
+ * @blob: Pointer to device tree blob
+ * @nr_cells_name: Name to lookup, e.g. "#address-cells"
+ */
+int fdt_get_cells_len(const void *blob, char *nr_cells_name);
+
#endif /* ifdef CONFIG_OF_LIBFDT */
#ifdef USE_HOSTCC