diff options
Diffstat (limited to 'include/dm/of_access.h')
-rw-r--r-- | include/dm/of_access.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/dm/of_access.h b/include/dm/of_access.h index 74f0606..dd1abb8 100644 --- a/include/dm/of_access.h +++ b/include/dm/of_access.h @@ -219,6 +219,22 @@ struct device_node *of_find_node_by_phandle(phandle handle); int of_read_u32(const struct device_node *np, const char *propname, u32 *outp); /** + * of_read_u64() - Find and read a 64-bit integer from a property + * + * Search for a property in a device node and read a 64-bit value from + * it. + * + * @np: device node from which the property value is to be read. + * @propname: name of the property to be searched. + * @outp: pointer to return value, modified only if return value is 0. + * + * @return 0 on success, -EINVAL if the property does not exist, + * -ENODATA if property does not have a value, and -EOVERFLOW if the + * property data isn't large enough. + */ +int of_read_u64(const struct device_node *np, const char *propname, u64 *outp); + +/** * of_read_u32_array() - Find and read an array of 32 bit integers * * Search for a property in a device node and read 32-bit value(s) from |