+ * puts() - Write a string
+ *
+ * This writes a string. This function should be implemented only if
+ * writing multiple characters at once is more performant than just
+ * calling putc() in a loop.
+ *
+ * If the whole string cannot be written at once, then this function
+ * should return the number of characters written. Returning a negative
+ * error code implies that no characters were written. If this function
+ * returns 0, then it will be called again with the same arguments.
+ *
+ * @dev: Device pointer
+ * @s: The string to write
+ * @len: The length of the string to write.
+ * @return The number of characters written on success, or -ve on error
+ */
+ ssize_t (*puts)(struct udevice *dev, const char *s, size_t len);
+ /**