"clock-frequency" is a required property for devices nodes compatible with "fixed-clock", leading to warnings when running $ make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/clock/fixed-clock.yaml arch/arm/boot/dts/sh73a0-kzm9g.dt.yaml: extcki: 'clock-frequency' is a required property Fix this by adding the missing "clock-frequency" properties to the various clocks, to be overridden by the board DTS files when populated. Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> --- arch/arm/boot/dts/sh73a0.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/boot/dts/sh73a0.dtsi b/arch/arm/boot/dts/sh73a0.dtsi index 7efe33c4d041a524..7c67581f57422a26 100644 --- a/arch/arm/boot/dts/sh73a0.dtsi +++ b/arch/arm/boot/dts/sh73a0.dtsi @@ -624,19 +624,25 @@ extal2_clk: extal2 { compatible = "fixed-clock"; #clock-cells = <0>; + /* This value must be overridden by the board. */ + clock-frequency = <0>; }; extcki_clk: extcki { compatible = "fixed-clock"; #clock-cells = <0>; + /* This value can be overridden by the board. */ + clock-frequency = <0>; }; fsiack_clk: fsiack { compatible = "fixed-clock"; #clock-cells = <0>; + /* This value can be overridden by the board. */ clock-frequency = <0>; }; fsibck_clk: fsibck { compatible = "fixed-clock"; #clock-cells = <0>; + /* This value can be overridden by the board. */ clock-frequency = <0>; }; -- 2.17.1