Other Parts Discussed in Thread: AM4372
Hi,
We are in process of swapping the ethernet interface names (eth0 & eth1) on our variant board (board is configured for dual ethernet). Not able to swap ethernet interface names with following s/w options.
Please refer to below logs and device tree changes. Could you please help us with pointers?
At this point of time we are looking for only software side change.
Board: Custom board based on AM437X.
TISDK: ti-processor-sdk-linux-am437x-evm-06.03.00.106
Linux: linux-4.19.94
Existing DT snippet:
&mac {
pinctrl-names = "default";
pinctrl-0 = <&cpsw1_default>, <&cpsw2_default>;
dual_emac = <1>;
status = "okay";
};
&cpsw_emac0 {
phy_id = <&davinci_mdio>, <0>;
phy-mode = "rmii";
dual_emac_res_vlan = <1>;
};
&cpsw_emac1 {
phy_id = <&davinci_mdio>, <1>;
phy-mode = "rmii";
dual_emac_res_vlan = <2>;
};
&davinci_mdio {
pinctrl-names = "default";
pinctrl-0 = <&davinci_mdio_default>;
status = "okay";
};
&phy_sel {
rmii-clock-ext = <1>;
};
cpsw1_default: cpsw1_default { //for EMAC 0
pinctrl-single,pins = <
/* Slave 1 */
AM4372_IOPAD(0x90c, PIN_INPUT | MUX_MODE1) /* (B14) mii1_crs.rmii1_crs_dv */
AM4372_IOPAD(0x910, PIN_INPUT | MUX_MODE1) /* (B13) mii1_rx_er.rmii1_rxer */
AM4372_IOPAD(0x914, PIN_OUTPUT | MUX_MODE1) /* (A13) mii1_tx_en.rmii1_txen */
AM4372_IOPAD(0x928, PIN_OUTPUT | MUX_MODE1) /* (B15) mii1_txd0.rmii1_txd0 */
AM4372_IOPAD(0x924, PIN_OUTPUT | MUX_MODE1) /* (A14) mii1_txd1.rmii1_txd1 */
AM4372_IOPAD(0x940, PIN_INPUT | MUX_MODE1) /* (F17) mii1_rxd0.rmii1_rxd0 */
AM4372_IOPAD(0x93c, PIN_INPUT | MUX_MODE1) /* (B16) mii1_rxd1.rmii1_rxd1 */
AM4372_IOPAD(0x944, PIN_INPUT | MUX_MODE0) /* (A16) rmii1_ref_clk.rmii1_refclk */
>;
};
cpsw2_default: cpsw2_default { //for EMAC1
pinctrl-single,pins = <
/* Slave 2*/
AM4372_IOPAD(0x864, PIN_INPUT | MUX_MODE8) /* (B4) gpmc_a9.rmii2_crs_dv */
AM4372_IOPAD(0x874, PIN_INPUT | MUX_MODE3) /* (B3) gpmc_wpn.rmii2_rxer */
AM4372_IOPAD(0x840, PIN_OUTPUT | MUX_MODE3) /* (C3) gpmc_a0.rmii2_txen */
AM4372_IOPAD(0x854, PIN_OUTPUT | MUX_MODE3) /* (E7) gpmc_a5.rmii2_txd0 */
AM4372_IOPAD(0x850, PIN_OUTPUT | MUX_MODE3) /* (D7) gpmc_a4.rmii2_txd1 */
AM4372_IOPAD(0x86c, PIN_INPUT | MUX_MODE3) /* (D8) gpmc_a11.rmii2_rxd0 */
AM4372_IOPAD(0x868, PIN_INPUT | MUX_MODE3) /* (G8) gpmc_a10.rmii2_rxd1 */
AM4372_IOPAD(0x908, PIN_INPUT | MUX_MODE1) /* (D16) mii1_col.rmii2_refclk */
>;
};
SW option : when dual emac configuration is set with emac1--> dual_emac_res_vlan = <1>; & emac0--> dual_emac_res_vlan = <2> Interfaces not swapped .
DT_snippet with SW_option:
&cpsw_emac0 {
phy_id = <&davinci_mdio>, <0>;
phy-mode = "rmii";
dual_emac_res_vlan = <2>;
};
&cpsw_emac1 {
phy_id = <&davinci_mdio>, <1>;
phy-mode = "rmii";
dual_emac_res_vlan = <1>;
};
LOG_Snippet:
[ 1.822331] of_get_named_gpiod_flags: can't parse 'reset-gpios' property of node '/ocp@44000000/ethernet@4a100000/mdio@4a101000[0]'
[ 1.822351] of_get_named_gpiod_flags: can't parse 'reset-gpio' property of node '/ocp@44000000/ethernet@4a100000/mdio@4a101000[0]'
[ 1.916830] cpsw 4a100000.ethernet: Detected MACID = 14:42:fc:94:c7:b5
[ 1.923686] cpsw 4a100000.ethernet: initialized cpsw ale version 1.4
[ 1.930158] cpsw 4a100000.ethernet: ALE Table size 1024
[ 1.935462] cpsw 4a100000.ethernet: cpts: overflow check period 500 (jiffies)
[ 1.943662] cpsw 4a100000.ethernet: cpsw: Detected MACID = 14:42:fc:94:c7:b7
[ 2.334058] cpuidle: enable-method property 'ti,am4372' found operations
[ 12.557596] net eth0: initializing cpsw version 1.15 (0)
[ 12.676903] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 12.775342] net eth1: initializing cpsw version 1.15 (0)
[ 12.892682] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready.
Note: when dual emac configuration is set with emac1-->phyid=0 & emac0-->phyid=1, Interfaces got swapped but ethernet activity is not happening which is an expected behavior for our hardware configuration.
Regards
Sathish
