[参考译文] TDA4VH-Q1：如何在 RGMII 内以固定链路模式设置 MCU CPSW2g TX 时钟？

mcu_cpsw: ethernet@46000000 {
		compatible = "ti,j721e-cpsw-nuss";
		#address-cells = <2>;
		#size-cells = <2>;
		reg = <0x0 0x46000000 0x0 0x200000>;
		reg-names = "cpsw_nuss";
		ranges = <0x0 0x0 0x0 0x46000000 0x0 0x200000>;
		dma-coherent;
		clocks = <&k3_clks 63 0>;
		clock-names = "fck";
		power-domains = <&k3_pds 63 TI_SCI_PD_EXCLUSIVE>;

		dmas = <&mcu_udmap 0xf000>,
		       <&mcu_udmap 0xf001>,
		       <&mcu_udmap 0xf002>,
		       <&mcu_udmap 0xf003>,
		       <&mcu_udmap 0xf004>,
		       <&mcu_udmap 0xf005>,
		       <&mcu_udmap 0xf006>,
		       <&mcu_udmap 0xf007>,
		       <&mcu_udmap 0x7000>;
		dma-names = "tx0", "tx1", "tx2", "tx3",
			    "tx4", "tx5", "tx6", "tx7",
			    "rx";

		ethernet-ports {
			#address-cells = <1>;
			#size-cells = <0>;

			mcu_cpsw_port1: port@1 {
				reg = <1>;
				ti,mac-only;
				label = "port1";
				ti,syscon-efuse = <&mcu_conf 0x200>;
				phys = <&phy_gmii_sel 1>;
			};
		};

		davinci_mdio: mdio@f00 {
			compatible = "ti,cpsw-mdio","ti,davinci_mdio";
			reg = <0x0 0xf00 0x0 0x100>;
			#address-cells = <1>;
			#size-cells = <0>;
			clocks = <&k3_clks 63 0>;
			clock-names = "fck";
			bus_freq = <1000000>;
		};

		cpts@3d000 {
			compatible = "ti,am65-cpts";
			reg = <0x0 0x3d000 0x0 0x400>;
			clocks = <&k3_clks 63 3>;
			clock-names = "cpts";
			interrupts-extended = <&gic500 GIC_SPI 858 IRQ_TYPE_LEVEL_HIGH>;
			interrupt-names = "cpts";
			ti,cpts-ext-ts-inputs = <4>;
			ti,cpts-periodic-outputs = <2>;
		};
	};
	

k3-j784s4-evm.dts
&mcu_cpsw {
	pinctrl-names = "default";
	pinctrl-0 = <&mcu_cpsw_pins_default &mcu_mdio_pins_default>;
};

//&davinci_mdio {
//	mcu_phy0: ethernet-phy@0 {
//		reg = <0>;
//		//ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
//		//ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
//		//ti,min-output-impedance;
//	};
//};

&mcu_cpsw_port1 {
	phy-mode = "rgmii-rxid";
//	phy-handle = <&mcu_phy0>;
	fixed-link {
		speed = <1000>;
		full-duplex;
	};
};