am335x Lan8710a 双网口配置

Posted 2020-10-22 陈富林

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一、经过调试， LAN8710A在 am335x 上面需要使用 GMII的模式，设备树 pin mux配置如下：

    // 下面是工作模式的配置，在睡眠模式下是配成GPIO模式
    162     cpsw_default: cpsw_default {
    163         pinctrl-single,pins = <
    164             /* Slave 1 */
    165             0x110 ( PIN_INPUT_PULLDOWN | MUX_MODE0 )    /* (J15) gmii1_rxer */
    166             0x114 ( PIN_OUTPUT         | MUX_MODE0 )    /* (J16) gmii1_txen */
    167             0x118 ( PIN_INPUT_PULLDOWN | MUX_MODE0 )    /* (J17) gmii1_rxdv */
    168             0x11c ( PIN_OUTPUT         | MUX_MODE0 )    /* (J18) gmii1_txd3 */
    169             0x120 ( PIN_OUTPUT         | MUX_MODE0 )    /* (K15) gmii1_txd2 */
    170             0x124 ( PIN_OUTPUT         | MUX_MODE0 )    /* (K16) gmii1_txd1 */
    171             0x128 ( PIN_OUTPUT         | MUX_MODE0 )    /* (K17) gmii1_txd0 */
    172             0x12c ( PIN_INPUT_PULLDOWN | MUX_MODE0 )    /* (K18) gmii1_txclk */
    173             0x130 ( PIN_INPUT_PULLDOWN | MUX_MODE0 )    /* (L18) gmii1_rxclk */
    174             0x134 ( PIN_INPUT_PULLDOWN | MUX_MODE0 )    /* (L17) gmii1_rxd3 */
    175             0x138 ( PIN_INPUT_PULLDOWN | MUX_MODE0 )    /* (L16) gmii1_rxd2 */
    176             0x13c ( PIN_INPUT_PULLDOWN | MUX_MODE0 )    /* (L15) gmii1_rxd1 */
    177             0x140 ( PIN_INPUT_PULLDOWN | MUX_MODE0 )    /* (M16) gmii1_rxd0 */
    178             0x74 ( PIN_INPUT_PULLDOWN  | MUX_MODE1 )    /* (U17) gpmc_wpn.gmii2_rxerr */
    179             0x40 ( PIN_OUTPUT          | MUX_MODE1 )    /* (R13) gpmc_a0.gmii2_txen */
    180             0x44 ( PIN_INPUT_PULLDOWN  | MUX_MODE1 )    /* (V14) gpmc_a1.gmii2_rxdv */
    181             0x58 ( PIN_INPUT_PULLDOWN  | MUX_MODE1 )    /* (U15) gpmc_a6.gmii2_txclk */
    182             0x5c ( PIN_INPUT_PULLDOWN  | MUX_MODE1 )    /* (T15) gpmc_a7.gmii2_rxclk */
    183             0x54 ( PIN_OUTPUT          | MUX_MODE1 )    /* (V15) gpmc_a5.gmii2_txd0 */
    184             0x50 ( PIN_OUTPUT          | MUX_MODE1 )    /* (R14) gpmc_a4.gmii2_txd1 */
    185             0x4c ( PIN_OUTPUT          | MUX_MODE1 )    /* (T14) gpmc_a3.gmii2_txd2 */
    186             0x48 ( PIN_OUTPUT          | MUX_MODE1 )    /* (U14) gpmc_a2.gmii2_txd3 */
    187             0x6c ( PIN_INPUT           | MUX_MODE1 )    /* (V17) gpmc_a11.gmii2_rxd0 */
    188             0x68 ( PIN_INPUT           | MUX_MODE1 )    /* (T16) gpmc_a10.gmii2_rxd1 */
    189             0x64 ( PIN_INPUT           | MUX_MODE1 )    /* (U16) gpmc_a9.gmii2_rxd2 */
    190             0x60 ( PIN_INPUT           | MUX_MODE1 )    /* (V16) gpmc_a8.gmii2_rxd3 */
    191         >;
    192     };

二、有关节点的配置如下：

    595 &mac {
    596     pinctrl-names = "default", "sleep";
    597     pinctrl-0 = <&cpsw_default>;
    598     pinctrl-1 = <&cpsw_sleep>;
    599     dual_emac = <1>;
    600     status = "okay";
    601 };
    602
    603 &davinci_mdio {
    604     pinctrl-names = "default", "sleep";
    605     pinctrl-0 = <&davinci_mdio_default>;
    606     pinctrl-1 = <&davinci_mdio_sleep>;
    607     status = "okay";
    608 };
    609
    610 &cpsw_emac0 {
    611     phy_id = <&davinci_mdio>, <0>;
    612     phy-mode = "mii";
    613     dual_emac_res_vlan = <1>;
    614 };
    615
    616 &cpsw_emac1 {
    617     phy_id = <&davinci_mdio>, <1>;
    618     phy-mode = "mii";
    619     dual_emac_res_vlan = <2>;
    620 };