imx-3.14.28-1.0.0_ga -> LAN8720 network card driver's issue

haibohe · ‎07-27-2015

Software versions:

repo init -u git://git.freescale.com/imx/fsl-arm-yocto-bsp.git -b imx-3.14.28-1.0.0_ga

U-Boot 2014.04-r0 <- imx-3.14.28-1.0.0_ga

Kernel 3.14.28-r0 <- imx-3.14.28-1.0.0_ga

arm-poky-linux-gnueabi-gcc-4.9.1

Ubuntu 14.04 OS

How to transplant LAN8720 network card driver

thanks

Sasamy · ‎07-28-2015

Hi haibo he,

in the linux kernel 3.14.28 enet_ref clock is set to 125M (RGMII)

http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/arch/arm/mach-imx/clk-imx6q.c?h=imx...

/*Set enet_ref clock to 125M to supply for RGMII tx_clk */

clk_set_rate(clk[IMX6QDL_CLK_ENET_REF], 125000000);

in case of LAN8720 enet_ref clock 50M (RMII) is required

View solution in original post

BiyongSUN · ‎07-27-2015

The BSP is for AR8031 ethernet PHY.

Also need to modify code to make it working on the customed board.

haibohe · ‎07-28-2015

Modify the contents of the following:

arch\arm\boot\dts\imx6qdl.dtsi

fec: ethernet@02188000 {

compatible = "fsl,imx6q-fec";

reg = <0x02188000 0x4000>;

interrupts-extended =

<&intc 0 118 IRQ_TYPE_LEVEL_HIGH>,

<&intc 0 119 IRQ_TYPE_LEVEL_HIGH>;

clocks = <&clks IMX6QDL_CLK_ENET>,

<&clks IMX6QDL_CLK_ENET>,

<&clks IMX6QDL_CLK_ENET_REF>;

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

status = "disabled";

};

arch\arm\boot\dts\imx6q-pinfunc.h

#define MX6QDL_PAD_GPIO_16__ENET_REF_CLK 0x248 0x618 0x83c 0x12 0x1

arch\arm\boot\dts\imx6qdl-sabresd.dtsi

&fec {

pinctrl-names = "default";

pinctrl-0 = <&pinctrl_enet>;

phy-mode = "rmii";

phy-reset-gpios = <&gpio1 23 0>; /* GPIO1_23 */

phy-reset-duration = <2>;

fsl,magic-packet;

status = "okay";

pinctrl_enet: enetgrp {

fsl,pins = <

/* MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x1b0b0

MX6QDL_PAD_ENET_MDC__ENET_MDC 0x1b0b0

MX6QDL_PAD_RGMII_TXC__RGMII_TXC 0x1b0b0

MX6QDL_PAD_RGMII_TD0__RGMII_TD0 0x1b0b0

MX6QDL_PAD_RGMII_TD1__RGMII_TD1 0x1b0b0

MX6QDL_PAD_RGMII_TD2__RGMII_TD2 0x1b0b0

MX6QDL_PAD_RGMII_TD3__RGMII_TD3 0x1b0b0

MX6QDL_PAD_RGMII_TX_CTL__RGMII_TX_CTL 0x1b0b0

MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK 0x1b0b0

MX6QDL_PAD_RGMII_RXC__RGMII_RXC 0x1b0b0

MX6QDL_PAD_RGMII_RD0__RGMII_RD0 0x1b0b0

MX6QDL_PAD_RGMII_RD1__RGMII_RD1 0x1b0b0

MX6QDL_PAD_RGMII_RD2__RGMII_RD2 0x1b0b0

MX6QDL_PAD_RGMII_RD3__RGMII_RD3 0x1b0b0

MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL 0x1b0b0

MX6QDL_PAD_GPIO_16__ENET_REF_CLK 0x4001b0a8

*/

MX6QDL_PAD_ENET_MDC__ENET_MDC 0x1b0b0

MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x1b0b0

MX6QDL_PAD_ENET_CRS_DV__ENET_RX_EN 0x1b0b0

MX6QDL_PAD_ENET_RXD0__ENET_RX_DATA0 0x1b0b0

MX6QDL_PAD_ENET_RXD1__ENET_RX_DATA1 0x1b0b0

MX6QDL_PAD_ENET_TX_EN__ENET_TX_EN 0x1b0b0

MX6QDL_PAD_ENET_TXD0__ENET_TX_DATA0 0x1b0b0

MX6QDL_PAD_ENET_TXD1__ENET_TX_DATA1 0x1b0b0

MX6QDL_PAD_GPIO_16__ENET_REF_CLK 0x4001b0b0

MX6QDL_PAD_ENET_RX_ER__ENET_RX_ER 0x1b0b0

MX6QDL_PAD_ENET_REF_CLK__GPIO1_IO23 0x80000000

MX6QDL_PAD_GPIO_18__GPIO7_IO13 0x80000000

>;

};

root@meihuan:~# ethtool eth0

Settings for eth0:

Supported ports: [ TP MII ]

Supported link modes: 10baseT/Half 10baseT/Full

100baseT/Half 100baseT/Full

Supported pause frame use: Symmetric

Supports auto-negotiation: Yes

Advertised link modes: 10baseT/Half 10baseT/Full

100baseT/Half 100baseT/Full

Advertised pause frame use: Symmetric

Advertised auto-negotiation: Yes

Speed: 10Mb/s

Duplex: Half

Port: MII

PHYAD: 0

Transceiver: external

Auto-negotiation: on

Supports Wake-on: g

Wake-on: d

Link detected: no

root@meihuan:~# ifconfig

eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:03

UP BROADCAST MULTICAST MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

eth1 Link encap:Ethernet HWaddr 0A:FF:D0:98:A3:48

inet addr:192.168.15.58 Bcast:192.168.15.255 Mask:255.255.255.0

inet6 addr: fe80::8ff:d0ff:fe98:a348/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:31116 errors:0 dropped:0 overruns:0 frame:0

TX packets:22303 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:36342916 (34.6 MiB) TX bytes:3790876 (3.6 MiB)

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

inet6 addr: ::1/128 Scope:Host

UP LOOPBACK RUNNING MTU:65536 Metric:1

RX packets:8 errors:0 dropped:0 overruns:0 frame:0

TX packets:8 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:784 (784.0 B) TX bytes:784 (784.0 B)

root@meihuan:~#

eth0-> LAN8720 Does not work, LED not lit
eth1-> Smsc95xx was turn USB network card, Normal working

Sasamy · ‎07-28-2015

Hi haibo he,

in the linux kernel 3.14.28 enet_ref clock is set to 125M (RGMII)

http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/arch/arm/mach-imx/clk-imx6q.c?h=imx...

/*Set enet_ref clock to 125M to supply for RGMII tx_clk */

clk_set_rate(clk[IMX6QDL_CLK_ENET_REF], 125000000);

in case of LAN8720 enet_ref clock 50M (RMII) is required

marcocavallini · ‎10-23-2015

Great job Alexander!

I confirm that using LAN8720 you have to replace the hard-coded setting in arch/arm/mach-imx/clk-imx6q.c

// clk_set_rate(clk[IMX6QDL_CLK_ENET_REF], 125000000);

clk_set_rate(clk[IMX6QDL_CLK_ENET_REF], 50000000);

haibohe · ‎07-28-2015

Issue has been resolved

Thank you very much for your technical support.

florian_germain · ‎12-17-2015

Do you confirm that you modify dts?

arch\arm\boot\dts\imx6qdl.dtsi

fec: ethernet@02188000 {

compatible = "fsl,imx6q-fec";

reg = <0x02188000 0x4000>;

interrupts-extended =

<&intc 0 118 IRQ_TYPE_LEVEL_HIGH>,

<&intc 0 119 IRQ_TYPE_LEVEL_HIGH>;

clocks = <&clks IMX6QDL_CLK_ENET>,

<&clks IMX6QDL_CLK_ENET>,

<&clks IMX6QDL_CLK_ENET_REF>;

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

status = "disabled";

};

You don't set IMX6QDL_CLK_ENET_125M?

If you use this configuration, why is there two IMX6QDL_CLK_ENET?

haibohe · ‎07-28-2015

modify are as follows

arch\arm\boot\dts\imx6qdl-sabresd.dtsi

&iomuxc {

pinctrl-names = "default";

pinctrl-0 = <&pinctrl_hog>;

imx6qdl-sabresd {

pinctrl_hog: hoggrp {

fsl,pins = <

/*

MX6QDL_PAD_NANDF_D0__GPIO2_IO00 0x80000000

MX6QDL_PAD_NANDF_D1__GPIO2_IO01 0x80000000

MX6QDL_PAD_NANDF_D2__GPIO2_IO02 0x80000000

MX6QDL_PAD_NANDF_D3__GPIO2_IO03 0x80000000

MX6QDL_PAD_GPIO_0__CCM_CLKO1 0x130b0

MX6QDL_PAD_NANDF_CLE__GPIO6_IO07 0x80000000

MX6QDL_PAD_NANDF_ALE__GPIO6_IO08 0x80000000

MX6QDL_PAD_ENET_TXD1__GPIO1_IO29 0x80000000

MX6QDL_PAD_EIM_D22__GPIO3_IO22 0x80000000

MX6QDL_PAD_ENET_CRS_DV__GPIO1_IO25 0x80000000

MX6QDL_PAD_EIM_D26__GPIO3_IO26 0x80000000

MX6QDL_PAD_EIM_CS1__GPIO2_IO24 0x80000000

MX6QDL_PAD_ENET_RXD0__GPIO1_IO27 0x80000000

MX6QDL_PAD_EIM_A25__GPIO5_IO02 0x80000000

MX6QDL_PAD_EIM_D23__GPIO3_IO23 0x80000000

MX6QDL_PAD_EIM_EB3__GPIO2_IO31 0x80000000

MX6QDL_PAD_SD1_CMD__GPIO1_IO18 0x80000000

MX6QDL_PAD_EIM_D16__GPIO3_IO16 0x80000000

MX6QDL_PAD_SD3_RST__GPIO7_IO08 0x80000000

MX6QDL_PAD_GPIO_9__GPIO1_IO09 0x80000000

MX6QDL_PAD_EIM_DA9__GPIO3_IO09 0x80000000

MX6QDL_PAD_GPIO_1__WDOG2_B 0x80000000

MX6QDL_PAD_NANDF_CS0__GPIO6_IO11 0x80000000

MX6QDL_PAD_NANDF_CS1__GPIO6_IO14 0x80000000

*/

MX6QDL_PAD_GPIO_4__GPIO1_IO04 0x80000000

MX6QDL_PAD_EIM_BCLK__GPIO6_IO31 0x80000000

MX6QDL_PAD_CSI0_DATA_EN__GPIO5_IO20 0x80000000

MX6QDL_PAD_KEY_COL2__GPIO4_IO10 0x80000000

MX6QDL_PAD_SD3_RST__GPIO7_IO08 0x80000000

MX6QDL_PAD_EIM_D20__GPIO3_IO20 0x80000000

MX6QDL_PAD_NANDF_D0__GPIO2_IO00 0x80000000

MX6QDL_PAD_NANDF_D1__GPIO2_IO01 0x80000000

MX6QDL_PAD_NANDF_D2__GPIO2_IO02 0x80000000

MX6QDL_PAD_NANDF_D3__GPIO2_IO03 0x80000000

MX6QDL_PAD_NANDF_ALE__GPIO6_IO08 0x80000000

MX6QDL_PAD_NANDF_CLE__GPIO6_IO07 0x80000000

MX6QDL_PAD_GPIO_0__CCM_CLKO1 0x130b0

MX6QDL_PAD_NANDF_CS2__GPIO6_IO15 0x80000000

MX6QDL_PAD_NANDF_CS3__GPIO6_IO16 0x80000000

MX6QDL_PAD_EIM_A25__GPIO5_IO02 0x80000000

MX6QDL_PAD_EIM_D23__GPIO3_IO23 0x80000000

MX6QDL_PAD_EIM_D22__GPIO3_IO22 0x80000000

MX6QDL_PAD_NANDF_CS0__GPIO6_IO11 0x80000000

MX6QDL_PAD_NANDF_CS1__GPIO6_IO14 0x80000000

MX6QDL_PAD_EIM_EB3__GPIO2_IO31 0x80000000

MX6QDL_PAD_EIM_DA9__GPIO3_IO09 0x80000000

MX6QDL_PAD_GPIO_9__GPIO1_IO09 0x80000000

MX6QDL_PAD_GPIO_2__GPIO1_IO02 0x80000000

MX6QDL_PAD_SD1_DAT1__GPIO1_IO17 0x80000000

>;

};

&fec {

pinctrl-names = "default";

pinctrl-0 = <&pinctrl_enet>;

phy-mode = "rmii";

phy-reset-gpios = <&gpio1 23 0>; /* GPIO1_23 */

phy-reset-duration = <1>;

fsl,magic-packet;

status = "okay";

};

root@imx6solosabresd:~# ifconfig eth0

eth0 Link encap:Ethernet HWaddr 00:6A:08:B0:AB:03

inet addr:192.168.15.221 Bcast:192.168.15.255 Mask:255.255.255.0

inet6 addr: fe80::26a:8ff:feb0:ab03/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:15 errors:0 dropped:0 overruns:0 frame:0

TX packets:45 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:1492 (1.4 KiB) TX bytes:8222 (8.0 KiB)

Normal work

issue is:

TFTP and NFS server

bootargs_nfs=setenv bootargs ${bootargs} root=/dev/nfs ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp

log info:

fec 2188000.ethernet eth0: Freescale FEC PHY driver [Generic PHY] (mii_bus:phy_addr=2188000.ethernet:00, irq=-1)

IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

smsc95xx 1-1.1:1.0 eth1: hardware isn't capable of remote wakeup

IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready

libphy: 2188000.ethernet:00 - Link is Up - 100/Full

IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

Sending DHCP requests .,

DHCP/BOOTP: Ignoring delayed packet

..,

usb 1-1.5: new high-speed USB device number 5 using ci_hdrc

DHCP/BOOTP: Ignoring delayed packet

.

There is no problem with the environment

haibohe · ‎07-28-2015

modify clk for 50M

eth0-> LAN8720 LED light

imx-3.14.28-1.0.0_ga -> LAN8720 network card driver's issue

imx-3.14.28-1.0.0_ga -> LAN8720 network card driver's issue

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