Hello,
We developed a custom board with AM5726.
We are using ti-processor-sdk kernel linux-4.19.79-rt28 commit 5baf382c8f566e7ab46a144eed51b639dec32841.
I'm having problems with the second ethernet interface of the cpsw in dual_emac configuration and phy-mode rmii.
This is still the same issue as my colleague posted in https://e2e.ti.com/support/processors/f/791/t/863091
Link detection and interface configuration work fine.
eth0 works as expected.
eth1 can receive but not send.
Here is the tcpdump output of "arping -b -I enx8cae4cfdd47b -c5 192.168.0.99" from Ubuntu VM to the custom board (direct cable connection; USB network adapter mapped into VM; nothing in between, no firewall).
Only eth1 is connected.
VM sends the request but does not receive the reply:
17:42:21.579408 ARP, Request who-has 192.168.0.99 (Broadcast) tell 192.168.0.2, length 28
17:42:22.580473 ARP, Request who-has 192.168.0.99 (Broadcast) tell 192.168.0.2, length 28
17:42:23.580821 ARP, Request who-has 192.168.0.99 (Broadcast) tell 192.168.0.2, length 28
17:42:24.581833 ARP, Request who-has 192.168.0.99 (Broadcast) tell 192.168.0.2, length 28
17:42:25.582174 ARP, Request who-has 192.168.0.99 (Broadcast) tell 192.168.0.2, length 28
Custom board receives the request and sends the reply:
00:01:04.779672 ARP, Request who-has 192.168.0.99 (Broadcast) tell 192.168.0.2, length 46
00:01:04.781305 ARP, Reply 192.168.0.99 is-at 18:62:e4:6f:58:21 (oui Unknown), length 28
00:01:05.780758 ARP, Request who-has 192.168.0.99 (Broadcast) tell 192.168.0.2, length 46
00:01:05.780919 ARP, Reply 192.168.0.99 is-at 18:62:e4:6f:58:21 (oui Unknown), length 28
00:01:06.781135 ARP, Request who-has 192.168.0.99 (Broadcast) tell 192.168.0.2, length 46
00:01:06.781291 ARP, Reply 192.168.0.99 is-at 18:62:e4:6f:58:21 (oui Unknown), length 28
00:01:07.782168 ARP, Request who-has 192.168.0.99 (Broadcast) tell 192.168.0.2, length 46
00:01:07.782323 ARP, Reply 192.168.0.99 is-at 18:62:e4:6f:58:21 (oui Unknown), length 28
00:01:08.782464 ARP, Request who-has 192.168.0.99 (Broadcast) tell 192.168.0.2, length 46
00:01:08.782619 ARP, Reply 192.168.0.99 is-at 18:62:e4:6f:58:21 (oui Unknown), length 28
Any ideas what we could try to fix this or narrow down?
Please let me know if you need any more info.
ethtool eth1
Settings for eth1:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Link partner advertised pause frame use: Symmetric
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 100Mb/s
Duplex: Full
Port: MII
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: d
Wake-on: d
Current message level: 0x00000000 (0)
Link detected: yes
ethtool -S eth1
NIC statistics:
Good Rx Frames: 8
Broadcast Rx Frames: 5
Multicast Rx Frames: 3
Pause Rx Frames: 0
Rx CRC Errors: 0
Rx Align/Code Errors: 0
Oversize Rx Frames: 0
Rx Jabbers: 0
Undersize (Short) Rx Frames: 0
Rx Fragments: 0
Rx Octets: 881
Good Tx Frames: 16
Broadcast Tx Frames: 0
Multicast Tx Frames: 11
Pause Tx Frames: 0
Deferred Tx Frames: 0
Collisions: 0
Single Collision Tx Frames: 0
Multiple Collision Tx Frames: 0
Excessive Collisions: 0
Late Collisions: 0
Tx Underrun: 0
Carrier Sense Errors: 0
Tx Octets: 1250
Rx + Tx 64 Octet Frames: 5
Rx + Tx 65-127 Octet Frames: 16
Rx + Tx 128-255 Octet Frames: 3
Rx + Tx 256-511 Octet Frames: 0
Rx + Tx 512-1023 Octet Frames: 0
Rx + Tx 1024-Up Octet Frames: 0
Net Octets: 2131
Rx Start of Frame Overruns: 0
Rx Middle of Frame Overruns: 0
Rx DMA Overruns: 0
Rx DMA chan 0: head_enqueue: 1
Rx DMA chan 0: tail_enqueue: 133
Rx DMA chan 0: pad_enqueue: 0
Rx DMA chan 0: misqueued: 0
Rx DMA chan 0: desc_alloc_fail: 0
Rx DMA chan 0: pad_alloc_fail: 0
Rx DMA chan 0: runt_receive_buf: 0
Rx DMA chan 0: runt_transmit_bu: 0
Rx DMA chan 0: empty_dequeue: 0
Rx DMA chan 0: busy_dequeue: 6
Rx DMA chan 0: good_dequeue: 6
Rx DMA chan 0: requeue: 0
Rx DMA chan 0: teardown_dequeue: 0
Tx DMA chan 0: head_enqueue: 16
Tx DMA chan 0: tail_enqueue: 0
Tx DMA chan 0: pad_enqueue: 0
Tx DMA chan 0: misqueued: 0
Tx DMA chan 0: desc_alloc_fail: 0
Tx DMA chan 0: pad_alloc_fail: 0
Tx DMA chan 0: runt_receive_buf: 0
Tx DMA chan 0: runt_transmit_bu: 5
Tx DMA chan 0: empty_dequeue: 16
Tx DMA chan 0: busy_dequeue: 0
Tx DMA chan 0: good_dequeue: 16
Tx DMA chan 0: requeue: 0
Tx DMA chan 0: teardown_dequeue: 0
ifconfig
eth0 Link encap:Ethernet HWaddr 18:62:E4:6F:58:20
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)
Interrupt:75
eth0:1 Link encap:Ethernet HWaddr 18:62:E4:6F:58:20
inet addr:10.10.1.99 Bcast:10.10.1.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
Interrupt:75
eth0:2 Link encap:Ethernet HWaddr 18:62:E4:6F:58:20
inet addr:172.16.10.99 Bcast:172.16.255.255 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
Interrupt:75
eth0:3 Link encap:Ethernet HWaddr 18:62:E4:6F:58:20
inet addr:192.109.223.254 Bcast:192.109.223.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
Interrupt:75
eth1 Link encap:Ethernet HWaddr 18:62:E4:6F:58:21
inet6 addr: fe80::1a62:e4ff:fe6f:5821/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:17 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:507 (507.0 B) TX bytes:1256 (1.2 KiB)
eth1:1 Link encap:Ethernet HWaddr 18:62:E4:6F:58:21
inet addr:192.168.0.99 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
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:24 errors:0 dropped:0 overruns:0 frame:0
TX packets:24 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2396 (2.3 KiB) TX bytes:2396 (2.3 KiB)
DTS:
&dra7_pmx_core {
cpsw_pins_default: cpsw_pins_default {
pinctrl-single,pins = <
DRA7XX_CORE_IOPAD(0x3658, PIN_INPUT_PULLDOWN | MUX_MODE1) /* v7 rgmii0_txd3.rmii0_crs */
DRA7XX_CORE_IOPAD(0x365c, PIN_INPUT_PULLDOWN | MUX_MODE1) /* u7 rgmii0_txd2.rmii0_rxer */
DRA7XX_CORE_IOPAD(0x3660, PIN_INPUT_PULLDOWN | MUX_MODE1) /* v6 rgmii0_txd1.rmii0_rxd1 */
DRA7XX_CORE_IOPAD(0x3664, PIN_INPUT_PULLDOWN | MUX_MODE1) /* u6 rgmii0_txd0.rmii0_rxd0 */
DRA7XX_CORE_IOPAD(0x3674, PIN_OUTPUT_PULLDOWN | MUX_MODE1) /* v3 rgmii0_rxd2.rmii0_txen */
DRA7XX_CORE_IOPAD(0x3678, PIN_OUTPUT_PULLDOWN | MUX_MODE1) /* y2 rgmii0_rxd1.rmii0_txd1 */
DRA7XX_CORE_IOPAD(0x367c, PIN_OUTPUT_PULLDOWN | MUX_MODE1) /* w2 rgmii0_rxd0.rmii0_txd0 */
DRA7XX_CORE_IOPAD(0x3648, PIN_INPUT_PULLDOWN | MUX_MODE2) /* v2 uart3_rxd.rmii1_crs */
DRA7XX_CORE_IOPAD(0x364c, PIN_INPUT_PULLDOWN | MUX_MODE2) /* y1 uart3_txd.rmii1_rxer */
DRA7XX_CORE_IOPAD(0x3650, PIN_INPUT_PULLDOWN | MUX_MODE2) /* w9 rgmii0_txc.rmii1_rxd1 */
DRA7XX_CORE_IOPAD(0x3654, PIN_INPUT_PULLDOWN | MUX_MODE2) /* v9 rgmii0_txctl.rmii1_rxd0 */
DRA7XX_CORE_IOPAD(0x3668, PIN_OUTPUT_PULLDOWN | MUX_MODE2) /* u5 rgmii0_rxc.rmii1_txen */
DRA7XX_CORE_IOPAD(0x366C, PIN_OUTPUT_PULLDOWN | MUX_MODE2) /* v5 rgmii0_rxctl.rmii1_txd1 */
DRA7XX_CORE_IOPAD(0x3670, PIN_OUTPUT_PULLDOWN | MUX_MODE2) /* v4 rgmii0_rxd3.rmii1_txd0 */
>;
};
cpsw_pins_sleep: cpsw_pins_sleep {
pinctrl-single,pins = <
DRA7XX_CORE_IOPAD(0x3658, PIN_INPUT_PULLDOWN | MUX_MODE15) /* v7 rgmii0_txd3.disabled */
DRA7XX_CORE_IOPAD(0x365c, PIN_INPUT_PULLDOWN | MUX_MODE15) /* u7 rgmii0_txd2.disabled */
DRA7XX_CORE_IOPAD(0x3660, PIN_INPUT_PULLDOWN | MUX_MODE15) /* v6 rgmii0_txd1.disabled */
DRA7XX_CORE_IOPAD(0x3664, PIN_INPUT_PULLDOWN | MUX_MODE15) /* u6 rgmii0_txd0.disabled */
DRA7XX_CORE_IOPAD(0x3674, PIN_INPUT_PULLDOWN | MUX_MODE15) /* v3 rgmii0_rxd2.disabled */
DRA7XX_CORE_IOPAD(0x3678, PIN_INPUT_PULLDOWN | MUX_MODE15) /* y2 rgmii0_rxd1.disabled */
DRA7XX_CORE_IOPAD(0x367c, PIN_INPUT_PULLDOWN | MUX_MODE15) /* w2 rgmii0_rxd0.disabled */
DRA7XX_CORE_IOPAD(0x3648, PIN_INPUT_PULLDOWN | MUX_MODE15) /* v2 uart3_rxd.disabled */
DRA7XX_CORE_IOPAD(0x364c, PIN_INPUT_PULLDOWN | MUX_MODE15) /* y1 uart3_txd.disabled */
DRA7XX_CORE_IOPAD(0x3650, PIN_INPUT_PULLDOWN | MUX_MODE15) /* w9 rgmii0_txc.disabled */
DRA7XX_CORE_IOPAD(0x3654, PIN_INPUT_PULLDOWN | MUX_MODE15) /* v9 rgmii0_txcl.disabled */
DRA7XX_CORE_IOPAD(0x3668, PIN_INPUT_PULLDOWN | MUX_MODE15) /* u5 rgmii0_rxc.disabled */
DRA7XX_CORE_IOPAD(0x366C, PIN_INPUT_PULLDOWN | MUX_MODE15) /* v5 rgmii0_rxctl.disabled */
DRA7XX_CORE_IOPAD(0x3670, PIN_INPUT_PULLDOWN | MUX_MODE15) /* v4 rgmii0_rxd3.disabled */
>;
};
davinci_mdio_pins_default: davinci_mdio_pins_default {
pinctrl-single,pins = <
DRA7XX_CORE_IOPAD(0x363c, PIN_OUTPUT_PULLUP | MUX_MODE0) /* V1 mdio_mclk.mdio_mclk */
DRA7XX_CORE_IOPAD(0x3640, PIN_INPUT_PULLUP | MUX_MODE0) /* U4 mdio_d.mdio_d */
>;
};
davinci_mdio_pins_sleep: davinci_mdio_pins_sleep {
pinctrl-single,pins = <
DRA7XX_CORE_IOPAD(0x363c, PIN_INPUT_PULLDOWN | MUX_MODE15) /* V1 mdio_mclk.disabled */
DRA7XX_CORE_IOPAD(0x3640, PIN_INPUT_PULLDOWN | MUX_MODE15) /* U4 mdio_d.disabled */
>;
};
};
&mac {
status = "okay";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&cpsw_pins_default>;
pinctrl-1 = <&cpsw_pins_sleep>;
dual_emac;
};
&davinci_mdio {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&davinci_mdio_pins_default>;
pinctrl-1 = <&davinci_mdio_pins_sleep>;
phy0: ethernet-phy@0 {
reg = <0>;
max-speed = <100>;
};
phy1: ethernet-phy@1 {
reg = <1>;
max-speed = <100>;
};
};
&cpsw_emac0 {
phy-handle = <&phy0>;
phy-mode = "rmii";
dual_emac_res_vlan = <1>;
};
&cpsw_emac1 {
phy-handle = <&phy1>;
phy-mode = "rmii";
dual_emac_res_vlan = <2>;
};
