The ROHM 
BD71847 PMIC has a 32.768 kHz clock.  Adding necessary parent
allows to probe the bd718x7 clock driver fixing boot errors:
    bd718xx-clk 
bd71847-clk.1.auto: No parent clk found
    bd718xx-clk: probe of 
bd71847-clk.1.auto failed with error -22
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-By: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
                interrupts = <3 GPIO_ACTIVE_LOW>;
                rohm,reset-snvs-powered;
 
+               #clock-cells = <0>;
+               clocks = <&osc_32k 0>;
+               clock-output-names = "clk-32k-out";
+
                regulators {
                        buck1_reg: BUCK1 {
                                regulator-name = "buck1";