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Forum Post: am335x can't link 1000base-T ethernet

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Dear TI,

       I design my board according to am335x_evm_15x15, i also use AR8031 as PHY, i set rgmii_rd0 pull-up,rgmii_rd1 pull-down,led_act pull-up.so the phyid=3'b101, then i change the uboot(u-boot-2011.09-psp04.06.00.03) 

static struct cpsw_slave_data cpsw_slaves[] = {
{
.slave_reg_ofs = 0x208,
.sliver_reg_ofs = 0xd80,
.phy_id = /*0*/5,
},
{
.slave_reg_ofs = 0x308,
.sliver_reg_ofs = 0xdc0,
.phy_id =1,
},
};

when i ping a host,the error is  miiphy read id fail.

i have checked up the hardware design and uboot, however i can't have a good idea to deal with the problem,could you help me? thanks


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