AM335x Ethernet 问题咨询

Sophia Kalibo

我现在使用AM335x搭配2个PHY - RTL8201CP（MII模式），大部份状况下运作正常

但是发现下列异常

1. ifdown 後 ifup的，LAN端口无法运行

ifdown eth0

ifconfig eth0 192.168.31.92

192.168.31.91（192.168.31.91）56（84）的数据的字节。
192.168.31.92 icmp_seq=1目标主机无法访问
192.168.31.92 icmp_seq=2目标主机无法访问

2. ifdown eth0 会影响eth1 也无法运行

3. ifdown 后，PHY LED无断电

BSP: linux-3.2.0-psp04.06.00.11

-----------> in arch/arm/mach-omap2/devices.c

static struct cpsw_slave_data am33xx_cpsw_slaves[] = {
{
.slave_reg_ofs = 0x200,
.sliver_reg_ofs = 0xd80,
.phy_id = "0:10", // <------------------------- CHANGED HERE
.dual_emac_reserved_vlan = CPSW_PORT_VLAN_SLAVE_0,
},
{
.slave_reg_ofs = 0x300,
.sliver_reg_ofs = 0xdc0,
.phy_id = "0:02", // <------------------------- CHANGED HERE
.dual_emac_reserved_vlan = CPSW_PORT_VLAN_SLAVE_1,
},
};

---------> arch/arm/mach-omap2/board-am335xevm.c
/* Module pin mux for mii1 */
static struct pinmux_config mii1_pin_mux[] = {
{"mii1_rxerr.mii1_rxerr", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
{"mii1_txen.mii1_txen", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
{"mii1_rxdv.mii1_rxdv", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
{"mii1_txd3.mii1_txd3", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
{"mii1_txd2.mii1_txd2", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
{"mii1_txd1.mii1_txd1", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
{"mii1_txd0.mii1_txd0", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
{"mii1_txclk.mii1_txclk", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
{"mii1_rxclk.mii1_rxclk", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
{"mii1_rxd3.mii1_rxd3", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
{"mii1_rxd2.mii1_rxd2", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
{"mii1_rxd1.mii1_rxd1", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
{"mii1_rxd0.mii1_rxd0", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
{"mdio_data.mdio_data", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"mdio_clk.mdio_clk", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT_PULLUP},
{NULL, 0},
};
/* Module pin mux for mii2 */
static struct pinmux_config mii2_pin_mux[] = {
{"gpmc_wpn.mii2_rxerr", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a0.mii2_txen", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
{"gpmc_a1.mii2_rxdv", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a2.mii2_txd3", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
{"gpmc_a3.mii2_txd2", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
{"gpmc_a4.mii2_txd1", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
{"gpmc_a5.mii2_txd0", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
{"gpmc_a6.mii2_txclk", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a7.mii2_rxclk", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a8.mii2_rxd3", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a9.mii2_rxd2", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a10.mii2_rxd1", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"gpmc_a11.mii2_rxd0", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
{"mdio_data.mdio_data", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
{"mdio_clk.mdio_clk", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT_PULLUP},
{NULL, 0},
};