dm: core: support reading a single indexed u64 value
Add helper function to allow reading a single indexed u64 value from a
device-tree property containing multiple u64 values, that is an array of
u64's.
Co-developed-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/08043c8d204d0068f04c27de86afe78c75c50b69.1692956263.git.michal.simek@amd.com
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
index 0f38b3e..0a85db3 100644
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -435,6 +435,18 @@
u32 *outp);
/**
+ * ofnode_read_u64_index() - Read a 64-bit integer from a multi-value property
+ *
+ * @node: valid node reference to read property from
+ * @propname: name of the property to read from
+ * @index: index of the integer to return
+ * @outp: place to put value (if found)
+ * Return: 0 if OK, -ve on error
+ */
+int ofnode_read_u64_index(ofnode node, const char *propname, int index,
+ u64 *outp);
+
+/**
* ofnode_read_s32() - Read a 32-bit integer from a property
*
* @node: valid node reference to read property from