add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/arch/arm/boot/dts/keystone-clocks.dtsi
..
..
@@ -408,4 +408,31 @@
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 		reg-names = "control", "domain";
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 		domain-id = <0>;
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 	};
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+
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+	/*
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+	 * Below are set of fixed, input clocks definitions,
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+	 * for which real frequencies have to be defined in board files.
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+	 * Those clocks can be used as reference clocks for some HW modules
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+	 * (as cpts, for example) by configuring corresponding clock muxes.
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+	 */
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+	timi0: timi0 {
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+		#clock-cells = <0>;
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+		compatible = "fixed-clock";
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+		clock-frequency = <0>;
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+		clock-output-names = "timi0";
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+	};
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+
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+	timi1: timi1 {
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+		#clock-cells = <0>;
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+		compatible = "fixed-clock";
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+		clock-frequency = <0>;
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+		clock-output-names = "timi1";
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+	};
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+
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+	tsrefclk: tsrefclk {
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+		#clock-cells = <0>;
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+		compatible = "fixed-clock";
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+		clock-frequency = <0>;
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+		clock-output-names = "tsrefclk";
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+	};
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 };