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RMII in imx6sx for DP83849I

Question asked by chen meng on Dec 17, 2016
Latest reply on Dec 20, 2016 by Rasmus Rahunen

DP83849I can not work.please help me check,thanks..

1.dts config

&fec1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_enet1>;
phy-supply = <&reg_enet_3v3>;
phy-mode = "gmii";
phy-handle = <&ethphy1>;
status = "okay";

mdio {
#address-cells = <1>;
#size-cells = <0>;

ethphy1: ethernet-phy@0 {
reg = <0>;
};

ethphy2: ethernet-phy@1 {
reg = <1>;
};
};
};

pinctrl_enet1: enet1grp {
fsl,pins = <
MX6SX_PAD_ENET1_MDIO__ENET1_MDIO 0xa0b1
MX6SX_PAD_ENET1_MDC__ENET1_MDC 0xa0b1
MX6SX_PAD_RGMII1_TXC__ENET1_RGMII_TXC 0xa0b9
MX6SX_PAD_RGMII1_TD0__ENET1_TX_DATA_0 0xa0b1
MX6SX_PAD_RGMII1_TD1__ENET1_TX_DATA_1 0xa0b1
MX6SX_PAD_RGMII1_TD2__ENET1_TX_DATA_2 0xa0b1
MX6SX_PAD_RGMII1_TD3__ENET1_TX_DATA_3 0xa0b1
MX6SX_PAD_RGMII1_TX_CTL__ENET1_TX_EN 0xa0b1
MX6SX_PAD_RGMII1_RXC__ENET1_RX_CLK 0x3081
MX6SX_PAD_RGMII1_RD0__ENET1_RX_DATA_0 0x3081
MX6SX_PAD_RGMII1_RD1__ENET1_RX_DATA_1 0x3081
MX6SX_PAD_RGMII1_RD2__ENET1_RX_DATA_2 0x3081
MX6SX_PAD_RGMII1_RD3__ENET1_RX_DATA_3 0x3081
MX6SX_PAD_RGMII1_RX_CTL__ENET1_RX_EN 0x3081
MX6SX_PAD_MX6SX_PAD_ENET2_RX_CLK__ENET2_RX_CLK 0x91
>;
};

pinctrl_enet_3v3: enet3v3grp {
fsl,pins = <
MX6SX_PAD_ENET2_COL__GPIO2_IO_6 0x80000000
>;
};

pinctrl_enet2: enet2grp {
fsl,pins = <
MX6SX_PAD_RGMII2_TXC__ENET2_RGMII_TXC 0xa0b9
MX6SX_PAD_RGMII2_TD0__ENET2_TX_DATA_0 0xa0b1
MX6SX_PAD_RGMII2_TD1__ENET2_TX_DATA_1 0xa0b1
MX6SX_PAD_RGMII2_TD2__ENET2_TX_DATA_2 0xa0b1
MX6SX_PAD_RGMII2_TD3__ENET2_TX_DATA_3 0xa0b1
MX6SX_PAD_RGMII2_TX_CTL__ENET2_TX_EN 0xa0b1
MX6SX_PAD_RGMII2_RXC__ENET2_RX_CLK 0x3081
MX6SX_PAD_RGMII2_RD0__ENET2_RX_DATA_0 0x3081
MX6SX_PAD_RGMII2_RD1__ENET2_RX_DATA_1 0x3081
MX6SX_PAD_RGMII2_RD2__ENET2_RX_DATA_2 0x3081
MX6SX_PAD_RGMII2_RD3__ENET2_RX_DATA_3 0x3081
MX6SX_PAD_RGMII2_RX_CTL__ENET2_RX_EN 0x3081
>;
};

2.enable driver/net/phy/dp83849.c

 

fec 2188000.ethernet eth0: Freescale FEC PHY driver [TI DP83849I 10/100 Mbps PHY] (mii_bus:phy_addr=2188000.ethernet:00, irq=-1)
IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off
IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
init: Starting service 'dhcpcd_eth0'...
nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead.
fec 2188000.ethernet eth0: Link is Down
fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off
fec 2188000.ethernet eth0: Link is Down
fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off
fec 2188000.ethernet eth0: Link is Down
fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off

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