Merge branch 'master' of git://git.denx.de/u-boot-i2c

[project/bcm63xx/u-boot.git] / lib / fdtdec.c

diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index fd0ad6ea84cd9c10ab2e6a4b6fec55d62fbbbc93..09a7e133a539488bf1f01f96e4821ec362fb7a6a 100644 (file)
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -542,6 +542,39 @@ int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
        return -ENOENT;
 }
 
+int fdtdec_get_alias_highest_id(const void *blob, const char *base)
+{
+       int base_len = strlen(base);
+       int prop_offset;
+       int aliases;
+       int max = -1;
+
+       debug("Looking for highest alias id for '%s'\n", base);
+
+       aliases = fdt_path_offset(blob, "/aliases");
+       for (prop_offset = fdt_first_property_offset(blob, aliases);
+            prop_offset > 0;
+            prop_offset = fdt_next_property_offset(blob, prop_offset)) {
+               const char *prop;
+               const char *name;
+               int len, val;
+
+               prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
+               debug("   - %s, %s\n", name, prop);
+               if (*prop != '/' || prop[len - 1] ||
+                   strncmp(name, base, base_len))
+                       continue;
+
+               val = trailing_strtol(name);
+               if (val > max) {
+                       debug("Found seq %d\n", val);
+                       max = val;
+               }
+       }
+
+       return max;
+}
+
 const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
 {
        int chosen_node;