ARM: shmobile: marzen: Specify external clock frequency in DT

The external crystal frequency is 31.25 on the Marzen board.
Specify it in the device tree.

Based on work for the Lager board by Laurent Pinchart.

Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
(cherry picked from commit 954e42cf541b3cbb8dd07ba29f5974f91cb8c248)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm/boot/dts/r8a7779-marzen.dts b/arch/arm/boot/dts/r8a7779-marzen.dts
index cf90d2d..3212908 100644 (file)
--- a/arch/arm/boot/dts/r8a7779-marzen.dts
+++ b/arch/arm/boot/dts/r8a7779-marzen.dts
@@ -69,6 +69,10 @@
        status = "okay";
 };
 
+&extal_clk {
+       clock-frequency = <31250000>;
+};
+
 &pfc {
        pinctrl-0 = <&scif2_pins &scif4_pins>;
        pinctrl-names = "default";