新聞中心

        EEPW首頁 > 網絡與存儲 > 設計應用 > 米爾基于NXP iMX.93開發板的網卡驅動移植指南

        米爾基于NXP iMX.93開發板的網卡驅動移植指南

        作者: 時間:2024-07-23 來源:EEPW 收藏

        NXP 處理器有兩個以太網控制器,其中eqos是TSN網絡控制器。另外一個Fec以太網外圍設備使設備能夠在以太網上傳輸和接收符合IEEE 802.3-2002標準的數據,提供了一個可配置的、靈活的外設,以滿足各種應用程序和客戶的需求。一般情況CPU集成MAC,PHY采用獨立芯片;CPU不集成MAC,MAC和PHY采用集成芯片。MAC和PHY工作在OSI模型的數據鏈路層和物理層。的MAC集成在cpu內部,所以還需要外接phy芯片。

        本文引用地址:http://www.104case.com/article/202407/461315.htm

        MYD-LMX9X(米爾基于NXP )外接了兩個YT8531SH千兆PHY芯片,ENET1原理圖如圖4-7:

        1721722479683130.png

        圖4-7 ENET1原理圖

        查看原理圖與《MYD-LMX9X-PinList-V1.0.pdf》得出 ENET1數據管腳與i.MX93的對應關系如表4-6:

        表4-6 ENET1引腳對應關系

        image.png

        ENET2原理圖如圖4-8:

        1721722511663115.png

        圖4-8 ENET2原理圖

        查看原理圖與《MYD-LMX9X-PinList-V1.0.pdf》得出 ENET2數據管腳與MYD-LMX9X的對應關系如表4-7:

        表4-7 ENET2引腳對應關系

        image.png

        1)查看內核設備樹引腳定義

        在內核中,有對i.MX93芯片的網口設備樹資源做了定義,此部分由芯片產商提供,屬于公共資源,實際上我們不需要修改這部分,只需要引用即可,如下:

        PC:~/myd-lmx9x-bsp/myir-imx-linux$ cat  arch/arm64/boot/dts/myir/imx93.dtsi

        ......

        fec: ethernet@42890000 {

        compatible = "fsl,imx93-fec", "fsl,imx8mp-fec", "fsl,imx8mq-fec";

        reg = <0x42890000 0x10000>;

        interrupts = <GIC_SPI 179 IRQ_TYPE_LEVEL_HIGH>,

        <GIC_SPI 180 IRQ_TYPE_LEVEL_HIGH>,

        <GIC_SPI 181 IRQ_TYPE_LEVEL_HIGH>,

        <GIC_SPI 182 IRQ_TYPE_LEVEL_HIGH>;

        clocks = <&clk IMX93_CLK_ENET1_GATE>,

        <&clk IMX93_CLK_ENET1_GATE>,

        <&clk IMX93_CLK_ENET_TIMER1>,

        <&clk IMX93_CLK_ENET_REF>,

        <&clk IMX93_CLK_ENET_REF_PHY>;

        clock-names = "ipg", "ahb", "ptp",

        "enet_clk_ref", "enet_out";

        assigned-clocks = <&clk IMX93_CLK_ENET_TIMER1>,

        <&clk IMX93_CLK_ENET_REF>,

        <&clk IMX93_CLK_ENET_REF_PHY>;

        assigned-clock-parents = <&clk IMX93_CLK_SYS_PLL_PFD1_DIV2>,

        <&clk IMX93_CLK_SYS_PLL_PFD0_DIV2>,

        <&clk IMX93_CLK_SYS_PLL_PFD1_DIV2>;

        assigned-clock-rates = <100000000>, <250000000>, <50000000>;

        fsl,num-tx-queues = <3>;

        fsl,num-rx-queues = <3>;

        fsl,stop-mode = <&wakeupmix_gpr 0x0c 1>;

        status = "disabled";

        };

        eqos: ethernet@428a0000 {

        compatible = "nxp,imx93-dwmac-eqos", "snps,dwmac-5.10a";

        reg = <0x428a0000 0x10000>;

        interrupts = <GIC_SPI 183 IRQ_TYPE_LEVEL_HIGH>,

        <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;

        interrupt-names = "eth_wake_irq", "macirq";

        clocks = <&clk IMX93_CLK_ENET_QOS_GATE>,

        <&clk IMX93_CLK_ENET_QOS_GATE>,

        <&clk IMX93_CLK_ENET_TIMER2>,

        <&clk IMX93_CLK_ENET>,

        <&clk IMX93_CLK_ENET_QOS_GATE>;

        clock-names = "stmmaceth", "pclk", "ptp_ref", "tx", "mem";

        assigned-clocks = <&clk IMX93_CLK_ENET_TIMER2>,

        <&clk IMX93_CLK_ENET>;

        assigned-clock-parents = <&clk IMX93_CLK_SYS_PLL_PFD1_DIV2>,

        <&clk IMX93_CLK_SYS_PLL_PFD0_DIV2>;

        assigned-clock-rates = <100000000>, <250000000>;

        intf_mode = <&wakeupmix_gpr 0x28>;

        clk_csr = <0>;

        nvmem-cells = <&eth_mac2>;

        nvmem-cell-names = "mac-address";

        status = "disabled";

        };

        上述只是對網口做了基本的初始化,并沒有對具體的硬件設備進行適配,在實際的情況下需要對具體的網口設備進行硬件引腳資源的適配。

        2)添加網卡設備樹節點

        根據原理圖的定義添加網口的設備樹配置,修改myir-imx93-11x11.dts文件,如下:

        PC:~/myd-lmx9x-bsp/myir-imx-linux$ cat  arch/arm64/boot/dts/myir/myir-imx93-11x11.dts

        ......

        &eqos {

        pinctrl-names = "default";

        pinctrl-0 = <&pinctrl_eqos>;

        phy-mode = "rgmii-id";

        phy-handle = <&ethphy1>;

        status = "okay";

        mdio {

        compatible = "snps,dwmac-mdio";

        #address-cells = <1>;

        #size-cells = <0>;

        clock-frequency = <5000000>;

        ethphy1: ethernet-phy@1 {

        compatible = "ethernet-phy-ieee802.3-c22";

        reg = <4>;

        eee-broken-1000t;

        };

        };

        };

        &fec {

        pinctrl-names = "default";

        pinctrl-0 = <&pinctrl_fec>;

        phy-mode = "rgmii-id";

        phy-handle = <&ethphy2>;

        fsl,magic-packet;

        status = "okay";

        mdio {

        compatible = "snps,dwmac-mdio";

        #address-cells = <1>;

        #size-cells = <0>;

        clock-frequency = <5000000>;

        ethphy2: ethernet-phy@2 {

        compatible = "ethernet-phy-ieee802.3-c22";

        reg = <6>;

        eee-broken-1000t;

        };

        };

        };

        3)網卡設備樹配置

        添加網卡設備樹節點的eth1_pins和eth2_pins引腳定義:

        pinctrl_eqos: eqosgrp {

        fsl,pins = <

        MX93_PAD_ENET1_MDC__ENET_QOS_MDC 0x57e

        MX93_PAD_ENET1_MDIO__ENET_QOS_MDIO 0x57e

        MX93_PAD_ENET1_RD0__ENET_QOS_RGMII_RD0 0x57e

        MX93_PAD_ENET1_RD1__ENET_QOS_RGMII_RD1 0x57e

        MX93_PAD_ENET1_RD2__ENET_QOS_RGMII_RD2 0x57e

        MX93_PAD_ENET1_RD3__ENET_QOS_RGMII_RD3 0x57e

        MX93_PAD_ENET1_RXC__CCM_ENET_QOS_CLOCK_GENERATE_RX_CLK 0x5fe

        MX93_PAD_ENET1_RX_CTL__ENET_QOS_RGMII_RX_CTL 0x57e

        MX93_PAD_ENET1_TD0__ENET_QOS_RGMII_TD0 0x57e

        MX93_PAD_ENET1_TD1__ENET_QOS_RGMII_TD1 0x57e

        MX93_PAD_ENET1_TD2__ENET_QOS_RGMII_TD2 0x57e

        MX93_PAD_ENET1_TD3__ENET_QOS_RGMII_TD3 0x57e

        MX93_PAD_ENET1_TXC__CCM_ENET_QOS_CLOCK_GENERATE_TX_CLK 0x5fe

        MX93_PAD_ENET1_TX_CTL__ENET_QOS_RGMII_TX_CTL 0x57e

        >;

        };

        pinctrl_fec: fecgrp {

        fsl,pins = <

        MX93_PAD_ENET2_MDC__ENET1_MDC 0x57e

        MX93_PAD_ENET2_MDIO__ENET1_MDIO 0x57e

        MX93_PAD_ENET2_RD0__ENET1_RGMII_RD0 0x57e

        MX93_PAD_ENET2_RD1__ENET1_RGMII_RD1 0x57e

        MX93_PAD_ENET2_RD2__ENET1_RGMII_RD2 0x57e

        MX93_PAD_ENET2_RD3__ENET1_RGMII_RD3 0x57e

        MX93_PAD_ENET2_RXC__ENET1_RGMII_RXC 0x5fe

        MX93_PAD_ENET2_RX_CTL__ENET1_RGMII_RX_CTL 0x57e

        MX93_PAD_ENET2_TD0__ENET1_RGMII_TD0 0x57e

        MX93_PAD_ENET2_TD1__ENET1_RGMII_TD1 0x57e

        MX93_PAD_ENET2_TD2__ENET1_RGMII_TD2  0x57e

        MX93_PAD_ENET2_TD3__ENET1_RGMII_TD3 0x57e

        MX93_PAD_ENET2_TXC__ENET1_RGMII_TXC 0x5fe

        MX93_PAD_ENET2_TX_CTL__ENET1_RGMII_TX_CTL 0x57e

        >;

        };

        4)    配置內核

        PHY驅動位于drivers/net/phy/motorcomm.c,我們只需要把這個驅動打開,編譯進內核即可,內核已默認配置網卡驅動,這里我們不再描述。最后編譯內核源碼,把新生成的設備樹dtb文件更新到板子即可。

        5)    網絡測試

        l 測試ENET1

        root@myd-lmx9x:/# ping www.baidu.com -I eth0

        PING www.baidu.com (14.215.177.39): 56 data bytes

        64 bytes from 14.215.177.39: seq=0 ttl=56 time=7.987 ms

        64 bytes from 14.215.177.39: seq=1 ttl=56 time=8.030 ms

        64 bytes from 14.215.177.39: seq=2 ttl=56 time=7.250 ms

        l 測試ENET2

        root@myd-lmx9x:/# ping www.baidu.com -I eth1

        PING www.baidu.com (14.215.177.39): 56 data bytes

        64 bytes from 14.215.177.39: seq=3 ttl=56 time=7.507 ms

        64 bytes from 14.215.177.39: seq=4 ttl=56 time=7.488 ms

        64 bytes from 14.215.177.39: seq=5 ttl=56 time=7.151 ms

        64 bytes from 14.215.177.39: seq=6 ttl=56 time=7.043 ms



        評論


        相關推薦

        技術專區

        關閉
        主站蜘蛛池模板: 葫芦岛市| 巫溪县| 天门市| 高碑店市| 威宁| 玉林市| 阿鲁科尔沁旗| 翁牛特旗| 道孚县| 和田市| 武安市| 博野县| 乾安县| 翁牛特旗| 宜章县| 屏东市| 哈密市| 古浪县| 苗栗县| 旺苍县| 巧家县| 舞钢市| 玉山县| 调兵山市| 吴忠市| 汝阳县| 沙湾县| 蓝山县| 读书| 潮州市| 石景山区| 江达县| 库伦旗| 百色市| 山丹县| 德令哈市| 桐庐县| 富阳市| 凤台县| 冷水江市| 溆浦县|