dm: core: Add ofnode function to read a 64-bit int

[u-boot] / drivers / core / of_access.c

diff --git a/drivers/core/of_access.c b/drivers/core/of_access.c
index 9a50f559de2d927c56e156076a2845c8fce210fc..0729dfcdb3b82e7d62d6fbb7a98a6e07035dfea9 100644 (file)
--- a/drivers/core/of_access.c
+++ b/drivers/core/of_access.c
@@ -457,6 +457,26 @@ int of_read_u32_array(const struct device_node *np, const char *propname,
        return 0;
 }
 
+int of_read_u64(const struct device_node *np, const char *propname, u64 *outp)
+{
+       const __be64 *val;
+
+       debug("%s: %s: ", __func__, propname);
+       if (!np)
+               return -EINVAL;
+       val = of_find_property_value_of_size(np, propname, sizeof(*outp));
+       if (IS_ERR(val)) {
+               debug("(not found)\n");
+               return PTR_ERR(val);
+       }
+
+       *outp = be64_to_cpup(val);
+       debug("%#llx (%lld)\n", (unsigned long long)*outp,
+              (unsigned long long)*outp);
+
+       return 0;
+}
+
 int of_property_match_string(const struct device_node *np, const char *propname,
                             const char *string)
 {