Dear Expert :
We have two version customized board for TDA4 :
* Version A : J721E SR1.0 SoC + SDK 7.3 --> CPSW2G+ ksz9031 PHY works well
* Version B : J721E SR1.1 SoC + SDK 8.2 --> CPSW2G+ ksz9031 PHY works fail
ksz9031 sheet as below :
https://www.microchip.com/en-us/product/KSZ9031
Version A and Version B have the same schematic design on ethernet PHY KSZ9031
so I try to find out this problem, steps as below :
1. Check standard register for KSZ9031:
I set network speed mandatory on 100Mbps, and cheeck standard register 2
Everything seems ok, and KSZ9031 detect link status correctly!
command "ping" failure!!
NOTICE: BL31: v2.5(release):08.01.00.006-dirty
NOTICE: BL31: Built : 21:03:57, Mar 23 2022
U-Boot SPL 2021.01-gec08cd44-dirty (Jul 05 2022 - 18:46:25 +0800)
Model: Texas Instruments K3 J721E SoC
EEPROM not available at 0x50, trying to read at 0x51
Reading on-board EEPROM at 0x51 failed 1
Board: J721EX-PM1-SOM rev E2
SYSFW ABI: 3.1 (firmware rev 0x0016 '22.1.1--v2022.01 (Terrific Llam')
EEPROM not available at 0x50, trying to read at 0x51
Reading on-board EEPROM at 0x51 failed 1
Trying to boot from MMC2
U-Boot 2021.01-gec08cd44-dirty (Jul 05 2022 - 18:46:25 +0800)
SoC: J721E SR1.1
Model: Texas Instruments K3 J721E SoC
EEPROM not available at 0x50, trying to read at 0x51
Reading on-board EEPROM at 0x51 failed 1
Board: J721EX-PM1-SOM rev E2
DRAM: 4 GiB
Flash: 0 Bytes
MMC: sdhci@4f80000: 0, sdhci@4fb0000: 1
In: serial@2800000
Out: serial@2800000
Err: serial@2800000
am65_cpsw_nuss ethernet@46000000: K3 CPSW: nuss_ver: 0x6BA00101 cpsw_ver: 0x6BA80100 ale_ver: 0x00293904 Ports:1 mdio_freq:1000000
EEPROM not available at 0x50, trying to read at 0x51
Reading on-board EEPROM at 0x51 failed 1
Net: Enter phy_micrel_ksz90x1_init
am65_cpsw_nuss_port ethernet@46000000port@1: Port 1 speed froced to 100Mbit
Enter ksz9031_config
Enter ksz9031_of_config
ksz9031_of_config, ARRAY_SIZE(ofcfg) = 4
Enter ksz90x1_of_config_group
ksz90x1_of_config_group: ofcfg->grpsz = 2
ksz90x1_of_config_group, ofcfg->grp[0].name = txen-skew-ps, val[0] = -1
ksz90x1_of_config_group, ofcfg->grp[1].name = rxdv-skew-ps, val[1] = -1
Enter ksz90x1_of_config_group
ksz90x1_of_config_group: ofcfg->grpsz = 4
ksz90x1_of_config_group, ofcfg->grp[0].name = rxd0-skew-ps, val[0] = -1
ksz90x1_of_config_group, ofcfg->grp[1].name = rxd1-skew-ps, val[1] = -1
ksz90x1_of_config_group, ofcfg->grp[2].name = rxd2-skew-ps, val[2] = -1
ksz90x1_of_config_group, ofcfg->grp[3].name = rxd3-skew-ps, val[3] = -1
Enter ksz90x1_of_config_group
ksz90x1_of_config_group: ofcfg->grpsz = 4
ksz90x1_of_config_group, ofcfg->grp[0].name = txd0-skew-ps, val[0] = -1
ksz90x1_of_config_group, ofcfg->grp[1].name = txd1-skew-ps, val[1] = -1
ksz90x1_of_config_group, ofcfg->grp[2].name = txd2-skew-ps, val[2] = -1
ksz90x1_of_config_group, ofcfg->grp[3].name = txd3-skew-ps, val[3] = -1
Enter ksz90x1_of_config_group
ksz90x1_of_config_group: ofcfg->grpsz = 2
ksz90x1_of_config_group, ofcfg->grp[0].name = rxc-skew-ps, val[0] = -1
ksz90x1_of_config_group, ofcfg->grp[1].name = txc-skew-ps, val[1] = -1
Enter ksz9031_center_flp_timing
Enter ksz9031_phy_extwrite
Enter ksz9031_phy_extended_write
Enter ksz9031_phy_extwrite
Enter ksz9031_phy_extended_write
eth0: ethernet@46000000port@1
Hit any key to stop autoboot: 0
=>
=> mdio list
ethernet@46000000port@1:
0 - Micrel ksz9031 <--> ethernet@46000000port@1
=> mii read 0 0
1140
=> mii read 0 1
796D
=> mii read 0 2
0022
=> mii read 0 3
1622
=> mii read 0 4
01E1
=> mii read 0 5
45E1
=> mii read 0 6
0007
=> mii read 0 7
2001
=> mii read 0 8
0000
=> mii read 0 9
0000
=> mii read 0 a
4000
=> mii read 0 d
8000
=> mii read 0 e
06A4
=> mii read 0 f
3000
=> mii read 0 11
00F4
=> mii read 0 12
0000
=> mii read 0 13
0079
=> mii read 0 15
0000
=> mii read 0 1b
0029
=> mii read 0 1c
0000
=> mii read 0 1f
0328
=> mii dump 0 0
0. (1140) -- PHY control register --
(8000:0000) 0.15 = 0 reset
(4000:0000) 0.14 = 0 loopback
(2040:0040) 0. 6,13 = b10 speed selection = 1000 Mbps
(1000:1000) 0.12 = 1 A/N enable
(0800:0000) 0.11 = 0 power-down
(0400:0000) 0.10 = 0 isolate
(0200:0000) 0. 9 = 0 restart A/N
(0100:0100) 0. 8 = 1 duplex = full
(0080:0000) 0. 7 = 0 collision test enable
(003f:0000) 0. 5- 0 = 0 (reserved)
=> mii dump 0 1
1. (796d) -- PHY status register --
(8000:0000) 1.15 = 0 100BASE-T4 able
(4000:4000) 1.14 = 1 100BASE-X full duplex able
(2000:2000) 1.13 = 1 100BASE-X half duplex able
(1000:1000) 1.12 = 1 10 Mbps full duplex able
(0800:0800) 1.11 = 1 10 Mbps half duplex able
(0400:0000) 1.10 = 0 100BASE-T2 full duplex able
(0200:0000) 1. 9 = 0 100BASE-T2 half duplex able
(0100:0100) 1. 8 = 1 extended status
(0080:0000) 1. 7 = 0 (reserved)
(0040:0040) 1. 6 = 1 MF preamble suppression
(0020:0020) 1. 5 = 1 A/N complete
(0010:0000) 1. 4 = 0 remote fault
(0008:0008) 1. 3 = 1 A/N able
(0004:0004) 1. 2 = 1 link status
(0002:0000) 1. 1 = 0 jabber detect
(0001:0001) 1. 0 = 1 extended capabilities
=> mii dump 0 2
2. (0022) -- PHY ID 1 register --
(ffff:0022) 2.15- 0 = 34 OUI portion
=> mii dump 0 3
3. (1622) -- PHY ID 2 register --
(fc00:1400) 3.15-10 = 5 OUI portion
(03f0:0220) 3. 9- 4 = 34 manufacturer part number
(000f:0002) 3. 3- 0 = 2 manufacturer rev. number
=> mii dump 0 4
4. (01e1) -- Autonegotiation advertisement register --
(8000:0000) 4.15 = 0 next page able
(4000:0000) 4.14 = 0 (reserved)
(2000:0000) 4.13 = 0 remote fault
(1000:0000) 4.12 = 0 (reserved)
(0800:0000) 4.11 = 0 asymmetric pause
(0400:0000) 4.10 = 0 pause enable
(0200:0000) 4. 9 = 0 100BASE-T4 able
(0100:0100) 4. 8 = 1 100BASE-TX full duplex able
(0080:0080) 4. 7 = 1 100BASE-TX able
(0040:0040) 4. 6 = 1 10BASE-T full duplex able
(0020:0020) 4. 5 = 1 10BASE-T able
(001f:0001) 4. 4- 0 = 1 selector = IEEE 802.3 CSMA/CD
=> mii dump 0 5
5. (45e1) -- Autonegotiation partner abilities register --
(8000:0000) 5.15 = 0 next page able
(4000:4000) 5.14 = 1 acknowledge
(2000:0000) 5.13 = 0 remote fault
(1000:0000) 5.12 = 0 (reserved)
(0800:0000) 5.11 = 0 asymmetric pause able
(0400:0400) 5.10 = 1 pause able
(0200:0000) 5. 9 = 0 100BASE-T4 able
(0100:0100) 5. 8 = 1 100BASE-X full duplex able
(0080:0080) 5. 7 = 1 100BASE-TX able
(0040:0040) 5. 6 = 1 10BASE-T full duplex able
(0020:0020) 5. 5 = 1 10BASE-T able
(001f:0001) 5. 4- 0 = 1 partner selector = IEEE 802.3 CSMA/CD
=> mii dump 0 9
9. (0000) -- 1000BASE-T control register --
(e000:0000) 9.15-13 = 0 test mode
(1000:0000) 9.12 = 0 manual master/slave enable
(0800:0000) 9.11 = 0 manual master/slave value
(0400:0000) 9.10 = 0 multi/single port
(0200:0000) 9. 9 = 0 1000BASE-T full duplex able
(0100:0000) 9. 8 = 0 1000BASE-T half duplex able
(0080:0000) 9. 7 = 0 automatic TDR on link down
(1fc0:0000) 9. 6 = 0 (reserved)
=> mii dump 0 a
10. (4000) -- 1000BASE-T status register --
(8000:0000) 10.15 = 0 master/slave config fault
(4000:4000) 10.14 = 1 master/slave config result
(2000:0000) 10.13 = 0 local receiver status OK
(1000:0000) 10.12 = 0 remote receiver status OK
(0800:0000) 10.11 = 0 1000BASE-T full duplex able
(0400:0000) 10.10 = 0 1000BASE-T half duplex able
(0300:0000) 10. 9- 8 = 0 (reserved)
(00ff:0000) 10. 7- 0 = 0 1000BASE-T idle error counter
=> env default -a
## Resetting to default environment
=> saveenv
Saving Environment to FAT... OK
=> setenv autoload no
=> setenv serverip 192.168.11.1
=> setenv ipaddr 192.168.11.230
=> setenv gatewayip 192.168.11.1
=> setenv netmask 255.255.255.0
=> setenv ethaddr 00:13:96:00:11:22
=> saveenv
Saving Environment to FAT... OK
=> ping 192.168.11.1
k3-navss-ringacc ringacc@2b800000: Ring Accelerator probed rings:286, gp-rings[96,20] sci-dev-id:235
k3-navss-ringacc ringacc@2b800000: dma-ring-reset-quirk: disabled
am65_cpsw_nuss_port ethernet@46000000port@1: K3 CPSW: rflow_id_base: 2
Enter ksz90xx_startup
ksz90xx_startup:DUPLEX_FULL
ksz90xx_startup:SPEED_100Mbps
link up on port 1, speed 100, full duplex
Using ethernet@46000000port@1 device
ARP Retry count exceeded; starting again
ping failed; host 192.168.11.1 is not alive
=>
2. Check device tree in u-boot
\board-support\u-boot-2021.01+gitAUTOINC+44a87e3ab8-g44a87e3ab8\arch\arm\dts\k3-j721e-common-proc-board.dts
mcu_cpsw_pins_default: mcu-cpsw-pins-default {
pinctrl-single,pins = <
J721E_WKUP_IOPAD(0x0058, PIN_OUTPUT, 0) /* MCU_RGMII1_TX_CTL */
J721E_WKUP_IOPAD(0x005c, PIN_INPUT, 0) /* MCU_RGMII1_RX_CTL */
J721E_WKUP_IOPAD(0x0060, PIN_OUTPUT, 0) /* MCU_RGMII1_TD3 */
J721E_WKUP_IOPAD(0x0064, PIN_OUTPUT, 0) /* MCU_RGMII1_TD2 */
J721E_WKUP_IOPAD(0x0068, PIN_OUTPUT, 0) /* MCU_RGMII1_TD1 */
J721E_WKUP_IOPAD(0x006c, PIN_OUTPUT, 0) /* MCU_RGMII1_TD0 */
J721E_WKUP_IOPAD(0x0078, PIN_INPUT, 0) /* MCU_RGMII1_RD3 */
J721E_WKUP_IOPAD(0x007c, PIN_INPUT, 0) /* MCU_RGMII1_RD2 */
J721E_WKUP_IOPAD(0x0080, PIN_INPUT, 0) /* MCU_RGMII1_RD1 */
J721E_WKUP_IOPAD(0x0084, PIN_INPUT, 0) /* MCU_RGMII1_RD0 */
J721E_WKUP_IOPAD(0x0070, PIN_OUTPUT, 0) /* MCU_RGMII1_TXC */
J721E_WKUP_IOPAD(0x0074, PIN_INPUT, 0) /* MCU_RGMII1_RXC */
>;
};
&mcu_cpsw {
pinctrl-names = "default";
pinctrl-0 = <&mcu_cpsw_pins_default &mcu_mdio_pins_default>;
};
&davinci_mdio {
phy0: ethernet-phy@0 {
reg = <0>;
max-speed = <100>;
};
};
&cpsw_port1 {
status = "okay";
/* DP PHY */
//phy-mode = "rgmii-rxid";
phy-handle = <&phy0>;
max-speed = <100>;
};
3. Check Skew delay for KSZ9031
I use default value, because this setting works fine for Version A board
it should be also works fine for Version B board over speed 100Mbps
=> mii read 0 0
1140
=> mii write 0 d 0x0002
=> mii write 0 e 0x0004
=> mii write 0 d 0x4002
=> mii read 0 e
0071
=> mii write 0 d 0x0002
=> mii write 0 e 0x0005
=> mii write 0 d 0x4002
=> mii read 0 e
7777
=> mii write 0 d 0x0002
=> mii write 0 e 0x0006
=> mii write 0 d 0x4002
=> mii read 0 e
1111
=> mii write 0 d 0x0002
=> mii write 0 e 0x0008
=> mii write 0 d 0x4002
=> mii read 0 e
3DF9
4. Set static IP for testing
mount ksz9031 driver successfuly, and set static ip for "ping" test .
The result show no response.
\root@j7-evm:~# dmesg | grep LSZ9031
root@j7-evm:~# dmesg | grep KSZ9031
[ 1.461668] davinci_mdio 46000f00.mdio: phy[0]: device 46000f00.mdio:00, driver Micrel KSZ9031 Gigabit PHY
[ 2.357675] davinci_mdio 46000f00.mdio: phy[0]: device 46000f00.mdio:00, driver Micrel KSZ9031 Gigabit PHY
[ 10.452251] Micrel KSZ9031 Gigabit PHY 46000f00.mdio:00: attached PHY driver [Micrel KSZ9031 Gigabit PHY] (mii_bus:phy_addr=46000f00.mdio:00, irq=POLL)
root@j7-evm:~# ifconfig eth0 192.168.11.22 netmask 255.255.255.0
root@j7-evm:~# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 metric 1
inet 192.168.11.22 netmask 255.255.255.0 broadcast 192.168.11.255
inet6 fe80::2676:25ff:fe99:7f18 prefixlen 64 scopeid 0x20<link>
ether 24:76:25:99:7f:18 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 39 bytes 6628 (6.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 metric 1
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 82 bytes 6220 (6.0 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 82 bytes 6220 (6.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
root@j7-evm:~# ping 192.168.11.1
PING 192.168.11.1 (192.168.11.1): 56 data bytes
[ 131.504618] Initializing XFRM netlink socket
[ 135.925935] process 'docker/tmp/qemu-check916837770/check' started with executable stack
4. Check register in TDA4
Now let's check related register in TDA4
everything seems fine ...
===============================
Menu
===============================
0: Clear Stats : CPSW 2G
3: Print Stats : CPSW 2G
6: Print ALE : CPSW 2G
9: Print Enet CFG : CPSW 2G
12: Verify Enet Ctrl CFG : CPSW 2G
15: Print MAC Config : CPSW 2G
20: CPSW2G Others
Make your choice : 20
Address 0x46000000 CPSW2G CPSW_SS_CPSW_NUSS_IDVER_REG 0x6ba00101
Address 0x46000004 CPSW2G CPSW_SS_SYNCE_COUNT_REG 0x0
Address 0x46000008 CPSW2G CPSW_SS_SYNCE_MUX_REG 0x0
Address 0x4600000c CPSW2G CPSW_SS_CONTROL_REG 0x0
#Address 0x46000018 CPSW2G CPSW_SS_RGMII_STATUS_REG 0x0
Address 0x4600001c CPSW2G CPSW_SS_SUBSSYSTEM_STATUS_REG 0x0
Address 0x40f04040 CPSW2G MCU_CPSW0_NUSS_SS 0x2
5. Check CPSW2G port0 / port1 status
The result let you know, something wrong !!
port 0 only get RX FRAME, strange!!
port 1 only get TX FRAME, strange!!
--------------------------------
PORT0 STATS
--------------------------------
STAT_0_RXGOODFRAMES = 11e mem:0x4603a000
STAT_0_RXBROADCASTFRAMES = fb mem:0x4603a004
STAT_0_RXMULTICASTFRAMES = 23 mem:0x4603a008
STAT_0_RXOCTETS = 5fc0 mem:0x4603a030
STAT_0_OCTETFRAMES64 = ed mem:0x4603a068
STAT_0_OCTETFRAMES65T127 = 16 mem:0x4603a06c
STAT_0_OCTETFRAMES128T255 = d mem:0x4603a070
STAT_0_OCTETFRAMES256T511 = e mem:0x4603a074
STAT_0_NETOCTETS = 5fc0 mem:0x4603a080
--------------------------------
PORT1 STATS
--------------------------------
STAT_1_TXGOODFRAMES = 11e mem:0x4603a234
STAT_1_TXBROADCASTFRAMES = fb mem:0x4603a238
STAT_1_TXMULTICASTFRAMES = 23 mem:0x4603a23c
STAT_1_TXOCTETS = 5fc0 mem:0x4603a264
STAT_1_OCTETFRAMES64 = ed mem:0x4603a268
STAT_1_OCTETFRAMES65T127 = 16 mem:0x4603a26c
STAT_1_OCTETFRAMES128T255 = d mem:0x4603a270
STAT_1_OCTETFRAMES256T511 = e mem:0x4603a274
STAT_1_NETOCTETS = 5fc0 mem:0x4603a280
STAT_1_TX_PRI_REG [0]= 11e
STAT_1_TX_PRI_BCNT_REG [0]= 5fc0
===============================
Menu
===============================
0: Clear Stats : CPSW 2G
3: Print Stats : CPSW 2G
6: Print ALE : CPSW 2G
9: Print Enet CFG : CPSW 2G
12: Verify Enet Ctrl CFG : CPSW 2G
15: Print MAC Config : CPSW 2G
20: CPSW2G Others
it should be some problems over RGMII interface
Does anyone has good comment for debugging on tda4 side?
Thanks very much
Gibbs
