米6体育平台手机版

ZHCUCE5 October 2024

4.2 软件要求

本节介绍极简设置的软件要求。适用于 Jacinto 7 处理器的软件开发套件 (SDK) 用于在测试期间控制和监测此参考设计（如图 4-1 所示）上的以太网 PHY。

将汽车以太网 PHY 驱动程序添加到 Linux SDK，从而使 Jacinto 7 处理器可以识别以太网 PHY。另请参阅如何将 Linux 驱动程序集成到您的系统中应用手册。

Jacinto 7 SDK v10 的以下代码块中显示了此特定板的 Linux 器件树叠加层，其中 PHY 配置为 PHY 地址 0x0、0x4、0x5 和 0x8。有关其他 SDK 版本，请参阅 SDK 文档。

/dts-v1/;
/plugin/;

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/net/ti-dp83867.h>
#include "k3-pinctrl.h"

&{/} {
	aliases {
		ethernet1 = "/bus@100000/ethernet@c000000/ethernet-ports/port@1";
		ethernet2 = "/bus@100000/ethernet@c000000/ethernet-ports/port@2";
		ethernet3 = "/bus@100000/ethernet@c000000/ethernet-ports/port@3";
		ethernet4 = "/bus@100000/ethernet@c000000/ethernet-ports/port@4";
	};
};

&cpsw0 {
	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&rgmii1_pins_default
		     &rgmii2_pins_default
		     &rgmii3_pins_default
		     &rgmii4_pins_default>;
};

&cpsw0_port1 {
	status = "okay";
	phy-handle = <&cpsw9g_phy0>;
	phy-mode = "rgmii-rxid";
	mac-address = [00 00 00 00 00 00];
	phys = <&cpsw0_phy_gmii_sel 1>;
};

&cpsw0_port2 {
	status = "okay";
	phy-handle = <&cpsw9g_phy4>;
	phy-mode = "rgmii-rxid";
	mac-address = [00 00 00 00 00 00];
	phys = <&cpsw0_phy_gmii_sel 2>;
};

&cpsw0_port3 {
	status = "okay";
	phy-handle = <&cpsw9g_phy5>;
	phy-mode = "rgmii-rxid";
	mac-address = [00 00 00 00 00 00];
	phys = <&cpsw0_phy_gmii_sel 3>;
};

&cpsw0_port4 {
	status = "okay";
	phy-handle = <&cpsw9g_phy8>;
	phy-mode = "rgmii-rxid";
	mac-address = [00 00 00 00 00 00];
	phys = <&cpsw0_phy_gmii_sel 4>;
};

&cpsw9g_mdio {
	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&mdio0_pins_default>;
	bus_freq = <1000000>;
	#address-cells = <1>;
	#size-cells = <0>;

	cpsw9g_phy0: ethernet-phy@0 {
		reg = <0>;
	};
	cpsw9g_phy4: ethernet-phy@4 {
		reg = <4>;
	};
	cpsw9g_phy5: ethernet-phy@5 {
		reg = <5>;
	};
	cpsw9g_phy8: ethernet-phy@8 {
		reg = <8>;
	};
};


&main_pmx0 {
	mdio0_pins_default: mdio0-pins-default {
		pinctrl-single,pins = <
			J721E_IOPAD(0x1bc, PIN_OUTPUT, 0) /* (V24) MDIO0_MDC */
			J721E_IOPAD(0x1b8, PIN_INPUT, 0) /* (V26) MDIO0_MDIO */
		>;
	};

	rgmii1_pins_default: rgmii1-pins-default {
		pinctrl-single,pins = <
			J721E_IOPAD(0x4, PIN_INPUT, 4) /* (AC23) PRG1_PRU0_GPO0.RGMII1_RD0 */
			J721E_IOPAD(0x8, PIN_INPUT, 4) /* (AG22) PRG1_PRU0_GPO1.RGMII1_RD1 */
			J721E_IOPAD(0xc, PIN_INPUT, 4) /* (AF22) PRG1_PRU0_GPO2.RGMII1_RD2 */
			J721E_IOPAD(0x10, PIN_INPUT, 4) /* (AJ23) PRG1_PRU0_GPO3.RGMII1_RD3 */
			J721E_IOPAD(0x1c, PIN_INPUT, 4) /* (AD22) PRG1_PRU0_GPO6.RGMII1_RXC */
			J721E_IOPAD(0x14, PIN_INPUT, 4) /* (AH23) PRG1_PRU0_GPO4.RGMII1_RX_CTL */
			J721E_IOPAD(0x30, PIN_OUTPUT, 4) /* (AF24) PRG1_PRU0_GPO11.RGMII1_TD0 */
			J721E_IOPAD(0x34, PIN_OUTPUT, 4) /* (AJ24) PRG1_PRU0_GPO12.RGMII1_TD1 */
			J721E_IOPAD(0x38, PIN_OUTPUT, 4) /* (AG24) PRG1_PRU0_GPO13.RGMII1_TD2 */
			J721E_IOPAD(0x3c, PIN_OUTPUT, 4) /* (AD24) PRG1_PRU0_GPO14.RGMII1_TD3 */
			J721E_IOPAD(0x44, PIN_OUTPUT, 4) /* (AE24) PRG1_PRU0_GPO16.RGMII1_TXC */
			J721E_IOPAD(0x40, PIN_OUTPUT, 4) /* (AC24) PRG1_PRU0_GPO15.RGMII1_TX_CTL */
		>;
	};

	rgmii2_pins_default: rgmii2-pins-default {
		pinctrl-single,pins = <
			J721E_IOPAD(0x58, PIN_INPUT, 4) /* (AE22) PRG1_PRU1_GPO0.RGMII2_RD0 */
			J721E_IOPAD(0x5c, PIN_INPUT, 4) /* (AG23) PRG1_PRU1_GPO1.RGMII2_RD1 */
			J721E_IOPAD(0x60, PIN_INPUT, 4) /* (AF23) PRG1_PRU1_GPO2.RGMII2_RD2 */
			J721E_IOPAD(0x64, PIN_INPUT, 4) /* (AD23) PRG1_PRU1_GPO3.RGMII2_RD3 */
			J721E_IOPAD(0x70, PIN_INPUT, 4) /* (AE23) PRG1_PRU1_GPO6.RGMII2_RXC */
			J721E_IOPAD(0x68, PIN_INPUT, 4) /* (AH24) PRG1_PRU1_GPO4.RGMII2_RX_CTL */
			J721E_IOPAD(0x84, PIN_OUTPUT, 4) /* (AJ25) PRG1_PRU1_GPO11.RGMII2_TD0 */
			J721E_IOPAD(0x88, PIN_OUTPUT, 4) /* (AH25) PRG1_PRU1_GPO12.RGMII2_TD1 */
			J721E_IOPAD(0x8c, PIN_OUTPUT, 4) /* (AG25) PRG1_PRU1_GPO13.RGMII2_TD2 */
			J721E_IOPAD(0x90, PIN_OUTPUT, 4) /* (AH26) PRG1_PRU1_GPO14.RGMII2_TD3 */
			J721E_IOPAD(0x98, PIN_OUTPUT, 4) /* (AJ26) PRG1_PRU1_GPO16.RGMII2_TXC */
			J721E_IOPAD(0x94, PIN_OUTPUT, 4) /* (AJ27) PRG1_PRU1_GPO15.RGMII2_TX_CTL */
		>;
	};

	rgmii3_pins_default: rgmii3-pins-default {
		pinctrl-single,pins = <
			J721E_IOPAD(0xb0, PIN_INPUT, 4) /* (AF28) PRG0_PRU0_GPO0.RGMII3_RD0 */
			J721E_IOPAD(0xb4, PIN_INPUT, 4) /* (AE28) PRG0_PRU0_GPO1.RGMII3_RD1 */
			J721E_IOPAD(0xb8, PIN_INPUT, 4) /* (AE27) PRG0_PRU0_GPO2.RGMII3_RD2 */
			J721E_IOPAD(0xbc, PIN_INPUT, 4) /* (AD26) PRG0_PRU0_GPO3.RGMII3_RD3 */
			J721E_IOPAD(0xc8, PIN_INPUT, 4) /* (AE26) PRG0_PRU0_GPO6.RGMII3_RXC */
			J721E_IOPAD(0xc0, PIN_INPUT, 4) /* (AD25) PRG0_PRU0_GPO4.RGMII3_RX_CTL */
			J721E_IOPAD(0xdc, PIN_OUTPUT, 4) /* (AJ28) PRG0_PRU0_GPO11.RGMII3_TD0 */
			J721E_IOPAD(0xe0, PIN_OUTPUT, 4) /* (AH27) PRG0_PRU0_GPO12.RGMII3_TD1 */
			J721E_IOPAD(0xe4, PIN_OUTPUT, 4) /* (AH29) PRG0_PRU0_GPO13.RGMII3_TD2 */
			J721E_IOPAD(0xe8, PIN_OUTPUT, 4) /* (AG28) PRG0_PRU0_GPO14.RGMII3_TD3 */
			J721E_IOPAD(0xf0, PIN_OUTPUT, 4) /* (AH28) PRG0_PRU0_GPO16.RGMII3_TXC */
			J721E_IOPAD(0xec, PIN_OUTPUT, 4) /* (AG27) PRG0_PRU0_GPO15.RGMII3_TX_CTL */
		>;
	};

	rgmii4_pins_default: rgmii4-pins-default {
		pinctrl-single,pins = <
			J721E_IOPAD(0x100, PIN_INPUT, 4) /* (AE29) PRG0_PRU1_GPO0.RGMII4_RD0 */
			J721E_IOPAD(0x104, PIN_INPUT, 4) /* (AD28) PRG0_PRU1_GPO1.RGMII4_RD1 */
			J721E_IOPAD(0x108, PIN_INPUT, 4) /* (AD27) PRG0_PRU1_GPO2.RGMII4_RD2 */
			J721E_IOPAD(0x10c, PIN_INPUT, 4) /* (AC25) PRG0_PRU1_GPO3.RGMII4_RD3 */
			J721E_IOPAD(0x118, PIN_INPUT, 4) /* (AC26) PRG0_PRU1_GPO6.RGMII4_RXC */
			J721E_IOPAD(0x110, PIN_INPUT, 4) /* (AD29) PRG0_PRU1_GPO4.RGMII4_RX_CTL */
			J721E_IOPAD(0x12c, PIN_OUTPUT, 4) /* (AG26) PRG0_PRU1_GPO11.RGMII4_TD0 */
			J721E_IOPAD(0x130, PIN_OUTPUT, 4) /* (AF27) PRG0_PRU1_GPO12.RGMII4_TD1 */
			J721E_IOPAD(0x134, PIN_OUTPUT, 4) /* (AF26) PRG0_PRU1_GPO13.RGMII4_TD2 */
			J721E_IOPAD(0x138, PIN_OUTPUT, 4) /* (AE25) PRG0_PRU1_GPO14.RGMII4_TD3 */
			J721E_IOPAD(0x140, PIN_OUTPUT, 4) /* (AG29) PRG0_PRU1_GPO16.RGMII4_TXC */
			J721E_IOPAD(0x13c, PIN_OUTPUT, 4) /* (AF29) PRG0_PRU1_GPO15.RGMII4_TX_CTL */
		>;
	};
};

除了添加 PHY 驱动程序，还需要调整以下器件树 以启用以太网接口：

使用以下命令更改链接的固件 (r5f0_0-fw)：

ln -sfn /usr/lib/firmware/ti-ipc/j721e/ipc_echo_test_mcu2_0_release_strip.xer5f /lib/firmware/j7-main-r5f0_0-fw

电路板上电后，使用以下终端命令确认 PHY 地址 (phy[x]) 和 eth 端口 (eth[y])：

dmesg | grep mdio

davinci_mdio c000f00.mdio: phy[0]: device c000f00.mdio:00, driver TI DP83TG721CS1.0
davinci_mdio c000f00.mdio: phy[4]: device c000f00.mdio:04, driver TI DP83TG721CS1.0
davinci_mdio c000f00.mdio: phy[5]: device c000f00.mdio:05, driver TI DP83TC818CS2.0
davinci_mdio c000f00.mdio: phy[8]: device c000f00.mdio:08, driver TI DP83TC818CS2.0
am65-cpsw-nuss c000000.ethernet eth1: PHY [c000f00.mdio:00] driver [TI DP83TG721CS1.0] (irq=POLL)
am65-cpsw-nuss c000000.ethernet eth2: PHY [c000f00.mdio:04] driver [TI DP83TG721CS1.0] (irq=POLL)
am65-cpsw-nuss c000000.ethernet eth3: PHY [c000f00.mdio:05] driver [TI DP83TC818CS2.0] (irq=POLL)
am65-cpsw-nuss c000000.ethernet eth4: PHY [c000f00.mdio:08] driver [TI DP83TC818CS2.0] (irq=POLL)