Add 'clock-frequency' is a required property by dtschema. Initialization
is open, similar to agilex devices.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
---
 arch/arm/boot/dts/intel/socfpga/socfpga_arria10.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/intel/socfpga/socfpga_arria10.dtsi b/arch/arm/boot/dts/intel/socfpga/socfpga_arria10.dtsi
index 65d04339f..5f4bed187 100644
--- a/arch/arm/boot/dts/intel/socfpga/socfpga_arria10.dtsi
+++ b/arch/arm/boot/dts/intel/socfpga/socfpga_arria10.dtsi
@@ -99,21 +99,25 @@ clocks {
 					cb_intosc_hs_div2_clk: cb_intosc_hs_div2_clk {
 						#clock-cells = <0>;
 						compatible = "fixed-clock";
+						clock-frequency = <0>;
 					};
 
 					cb_intosc_ls_clk: cb_intosc_ls_clk {
 						#clock-cells = <0>;
 						compatible = "fixed-clock";
+						clock-frequency = <0>;
 					};
 
 					f2s_free_clk: f2s_free_clk {
 						#clock-cells = <0>;
 						compatible = "fixed-clock";
+						clock-frequency = <0>;
 					};
 
 					osc1: osc1 {
 						#clock-cells = <0>;
 						compatible = "fixed-clock";
+						clock-frequency = <0>;
 					};
 
 					main_pll: main_pll@40 {
-- 
2.25.1