AM3352: No TX_EN signal on both MII ports

Manjunath B

Part Number: AM3352
Other Parts Discussed in Thread: TPS65910, TPS65217

Hi,

We are using AM3352 processor ZCZ package.We want to use both mii1 and mii2 in 100 mbps speed duplex mode.MII1 is connected to KSZ8895 ethernet switch and MII2 is connected to DP83822 PHY device.We are getting Rx clk and Tx clk of 25 MHz on both mii1 and mii2 respectively.Link is Up (100/full) both MII1 and MII2.Ping is not happening for both.Measured across Tx_EN (for both mii1 and mii2) pin using oscilloscope nothing is coming.We are suspecting some configurational issue.

I have put the kernel log data and pin mux details of both mii1 and mii2 below.

U-Boot 2013.01.01 (Nov 26 2016 - 17:50:35)

I2C:   ready
DRAM: 512 MiB
WARNING: Caches not enabled
NAND: No NAND device found!!!
0 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment

musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Host mode controller at 47401800 using PIO, IRQ 0
Net:   <ethaddr> not set. Validating first E-fuse MAC
cpsw, usb_ether
Hit any key to stop autoboot: 0
mmc0 is current device
SD/MMC found on device 0
reading uEnv.txt
** Unable to read file uEnv.txt **
reading uImage
2923992 bytes read in 291 ms (9.6 MiB/s)
Booting from mmc ...
## Booting kernel from Legacy Image at 80007fc0 ...
   Image Name:   Linux-3.2.0
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    2923928 Bytes = 2.8 MiB
   Load Address: 80008000
   Entry Point: 80008000
   Verifying Checksum ... OK
   XIP Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
[    0.000000] Linux version 3.2.0 (root@rrtestpc-ThinkCentre-A58) (gcc version 4.7.3 20130226 (prerelease) (crosstool-NG linaro-1.13.1-4.7-20137
[    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] Machine: am335xevm
[    0.000000] Memory policy: ECC disabled, Data cache writeback
[    0.000000] AM335X ES2.1 (neon )
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 130048
[    0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext3 rootwait ip=none
[    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Memory: 512MB = 512MB total
[    0.000000] Memory: 513768k/513768k available, 10520k reserved, 0K highmem
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap : 0xfff00000 - 0xfffe0000   ( 896 kB)
[    0.000000]     vmalloc : 0xe0800000 - 0xff000000   ( 488 MB)
[    0.000000]     lowmem : 0xc0000000 - 0xe0000000   ( 512 MB)
[    0.000000]     modules : 0xbf000000 - 0xc0000000   ( 16 MB)
[    0.000000]       .text : 0xc0008000 - 0xc0518000   (5184 kB)
[    0.000000]       .init : 0xc0518000 - 0xc0550000   ( 224 kB)
[    0.000000]       .data : 0xc0550000 - 0xc05ab030   ( 365 kB)
[    0.000000]        .bss : 0xc05ab054 - 0xc05d7490   ( 178 kB)
[    0.000000] NR_IRQS:396
[    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
[    0.000000] Total of 128 interrupts on 1 active controller
[    0.000000] OMAP clockevent source: GPTIMER2 at 25000000 Hz
[    0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz
[    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
[    0.000000] Console: colour dummy device 80x30
[    0.000061] Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736)
[    0.089263] pid_max: default: 32768 minimum: 301
[    0.089355] Security Framework initialized
[    0.089416] Mount-cache hash table entries: 512
[    0.089721] CPU: Testing write buffer coherency: ok
[    0.090301] devtmpfs: initialized
[    0.109069] omap_hwmod: gfx: failed to hardreset
[    0.124725] omap_hwmod: pruss: failed to hardreset
[    0.125610] print_constraints: dummy:
[    0.125885] NET: Registered protocol family 16
[    0.127532] OMAP GPIO hardware version 0.1
[    0.129394] omap_mux_init: Add partition: #1: core, flags: 0
[    0.130859] omap_i2c.1: alias fck already exists
[    0.131561] omap2_mcspi.1: alias fck already exists
[    0.131713] omap2_mcspi.2: alias fck already exists
[    0.132415] edma.0: alias fck already exists
[    0.132446] edma.0: alias fck already exists
[    0.132446] edma.0: alias fck already exists
[    0.147460] bio: create slab <bio-0> at 0
[    0.149047] SCSI subsystem initialized
[    0.150482] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
[    0.151550] tps65910 1-002d: could not be detected
[    0.153320] Switching to clocksource gp timer
[    0.166687] NET: Registered protocol family 2
[    0.166870] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.167144] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[    0.167358] TCP bind hash table entries: 16384 (order: 4, 65536 bytes)
[    0.167480] TCP: Hash tables configured (established 16384 bind 16384)
[    0.167480] TCP reno registered
[    0.167510] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.167510] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.167663] NET: Registered protocol family 1
[    0.167907] RPC: Registered named UNIX socket transport module.
[    0.167907] RPC: Registered udp transport module.
[    0.167907] RPC: Registered tcp transport module.
[    0.167907] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.168090] NetWinder Floating Point Emulator V0.97 (double precision)
[    0.253326] VFS: Disk quotas dquot_6.5.2
[    0.253417] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.254058] msgmni has been set to 1003
[    0.256469] alg: No test for stdrng (krng)
[    0.257080] io scheduler noop registered
[    0.257110] io scheduler deadline registered
[    0.257171] io scheduler cfq registered (default)
[    0.258117] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
[    0.686737] console [ttyO0] enabled
[    0.690856] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
[    0.698638] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
[    0.706359] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
[    0.714080] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
[    0.721771] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
[    0.729919] omap4_rng omap4_rng: OMAP4 Random Number Generator ver. 2.00
[    0.744323] brd: module loaded
[    0.751281] loop: module loaded
[    0.754760] i2c-core: driver [tsl2550] using legacy suspend method
[    0.761230] i2c-core: driver [tsl2550] using legacy resume method
[    0.767669] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[    0.873748] No daughter card found
[    0.877349] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[    0.892517] Board name: A335BNLT
[    0.895904] Board version: 000C
[    0.899169] The board is a AM335x Beaglebone Black.
[    0.906280] tps65217 1-0024: TPS65217 ID 0xe version 1.2
[    0.913787] print_constraints: DCDC1: 900 <--> 1800 mV at 1500 mV
[    0.922210] print_constraints: DCDC2: 900 <--> 3300 mV at 1325 mV
[    0.930603] print_constraints: DCDC3: 900 <--> 1500 mV at 1125 mV
[    0.938995] print_constraints: LDO1: 1000 <--> 3300 mV at 1800 mV
[    0.947357] print_constraints: LDO2: 900 <--> 3300 mV at 3300 mV
[    0.955657] print_constraints: LDO3: 1800 <--> 3300 mV at 1800 mV
[    0.964019] print_constraints: LDO4: 1800 <--> 3300 mV at 3300 mV
[    0.970947] Naveen : mii1_init : ===>
[    0.975128] Naveen : mii2_init : ===>
[    0.979431] omap_hsmmc.0: alias fck already exists
[    0.984863] omap_hsmmc.1: alias fck already exists
[    0.990203] omap_i2c.3: alias fck already exists
[    0.995422] omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
[    1.004089] omap2_mcspi omap2_mcspi.1: chipselect 0 already in use
[    1.010559] omap2_mcspi omap2_mcspi.1: can't create new device for ksz8895
[    1.017761] Naveen:devices.c AM33XX_CPSW_MODE_MII: 0 : ===>
[    1.024291] Naveen : setup_beagleboneblack : ===>
[    1.030151] registered am33xx_sr device
[    1.035644] mtdoops: mtd device (mtddev=name/number) must be supplied
[    1.042694] omap2-nand driver initializing
[    1.047241] OneNAND driver initializing
[    1.052551] Naveen : Inside marvell_init
[    1.058288] national ns_init
[    1.061950] CAN device driver interface
[    1.065948] CAN bus driver for Bosch D_CAN controller 1.0
[    1.113830] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
[    1.120300] davinci_mdio davinci_mdio.0: detected phy mask ffffffc0
[    1.129760] davinci_mdio.0: probed
[    1.133331] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver NatSemi DP83822
[    1.141448] davinci_mdio davinci_mdio.0: phy[1]: device 0:01, driver unknown
[    1.148803] davinci_mdio davinci_mdio.0: phy[2]: device 0:02, driver unknown
[    1.156188] davinci_mdio davinci_mdio.0: phy[3]: device 0:03, driver unknown
[    1.163543] davinci_mdio davinci_mdio.0: phy[4]: device 0:04, driver unknown
[    1.170928] davinci_mdio davinci_mdio.0: phy[5]: device 0:05, driver unknown
[    1.178833] mousedev: PS/2 mouse device common for all mice
[    1.185577] omap_rtc am33xx-rtc: rtc core: registered am33xx-rtc as rtc0
[    1.192779] i2c /dev entries driver
[    2.334014] omap_i2c omap_i2c.3: controller timed out
[    3.334136] omap_i2c omap_i2c.3: controller timed out
[    4.353973] omap_i2c omap_i2c.3: controller timed out
[    5.373962] omap_i2c omap_i2c.3: controller timed out
[    6.393951] omap_i2c omap_i2c.3: controller timed out
[    7.413970] omap_i2c omap_i2c.3: controller timed out
[    8.434020] omap_i2c omap_i2c.3: controller timed out
[    9.453948] omap_i2c omap_i2c.3: controller timed out
[    9.474914] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[    9.482391] cpuidle: using governor ladder
[    9.487091] cpuidle: using governor menu
[    9.494506] omap4_aes_mod_init: loading AM33X AES driver
[    9.500122] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
[    9.506744] omap4_aes_probe: probe() done
[    9.511108] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
[    9.517242] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
[    9.533996] omap4_sham_probe: probe() done
[    9.538665] oprofile: hardware counters not available
[    9.543975] oprofile: using timer interrupt.
[    9.548583] nf_conntrack version 0.5.0 (8027 buckets, 32108 max)
[    9.555114] IPv4 over IPv4 tunneling driver
[    9.560211] ip_tables: (C) 2000-2006 Netfilter Core Team
[    9.565917] TCP bic registered
[    9.569122] TCP cubic registered
[    9.572479] TCP westwood registered
[    9.576171] TCP highspeed registered
[    9.579895] TCP htcp registered
[    9.583190] TCP scalable registered
[    9.586853] NET: Registered protocol family 17
[    9.591613] Bridge firewalling registered
[    9.595825] Ebtables v2.0 registered
[    9.599578] can: controller area network core (rev 20090105 abi 8)
[    9.606109] NET: Registered protocol family 29
[    9.610748] can: raw protocol (rev 20090105)
[    9.615203] can: broadcast manager protocol (rev 20090105 t)
[    9.621154] Registering the dns_resolver key type
[    9.626098] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[    9.634124] ThumbEE CPU extension supported.
[    9.638641] mux: Failed to setup hwmod io irq -22
[    9.644104] Power Management for AM33XX family
[    9.648925] Trying to load am335x-pm-firmware.bin (60 secs timeout)
[    9.655639] Copied the M3 firmware to UMEM
[    9.659973] Cortex M3 Firmware Version = 0x181
[    9.665435] create_regulator: DCDC2: Failed to create debugfs directory
[    9.673004] smartreflex smartreflex: am33xx_sr_probe: Driver initialized
[    9.681243] backlight_init: Error on attempting to enable backlight, not supported
[    9.691864] clock: disabling unused clocks to save power
[    9.707763] Detected MACID=98:5d:ad:2c:83:11
[    9.713165] cpsw: Detected MACID = 98:5d:ad:2c:83:13
[    9.718658] mmc0: host does not support reading read-only switch. assuming write-enable.
[    9.727783] omap_rtc am33xx-rtc: setting system clock to 2000-01-01 00:00:09 UTC (946684809)
[    9.737060] Waiting for root device /dev/mmcblk0p2...
[    9.742462] mmc0: new high speed SDHC card at address 0007
[    9.748718] mmcblk0: mmc0:0007 SS08G 7.21 GiB
[    9.754882] mmcblk0: p1 p2
[    9.854156] kjournald starting. Commit interval 5 seconds
[    9.859924] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
[    9.867156] VFS: Mounted root (ext3 filesystem) readonly on device 179:2.
[    9.877899] devtmpfs: mounted
[    9.881286] Freeing init memory: 224K
[   10.088287] EXT3-fs (mmcblk0p2): using internal journal
Starting logging: OK
Initializing random number generator... done.
Starting network: OK
Starting DHCP server: FAIL
Starting HPA's tftpd:
Welcome to Buildroot
buildroot login: root
# ifconfig eth0 10.3.3.11 up
[   30.766784] national ns_giga_speed_fallback
[   30.771392] Naveen:BMCR= 3100
[   30.776153] net eth0: CPSW phy found : id is : 0x2000a240
# [   32.775268] PHY: 0:00 - Link is Up - 100/Full

#
#
#
# ethtool eth0
Settings for eth0:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Advertised link modes: 10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Speed: 100Mb/s
        Duplex: Full
        Port: MII
        PHYAD: 0
        Transceiver: external
        Auto-negotiation: on
        Current message level: 0x00000000 (0)

        Link detected: yes
#
#
# ping 10.3.3.15
PING 10.3.3.15 (10.3.3.15) 56(84) bytes of data.
From 10.3.3.11 icmp_seq=1 Destination Host Unreachable
From 10.3.3.11 icmp_seq=2 Destination Host Unreachable
From 10.3.3.11 icmp_seq=3 Destination Host Unreachable
^C
--- 10.3.3.15 ping statistics ---
5 packets transmitted, 0 received, +3 errors, 100% packet loss, time 4006ms
pipe 3
# ethtool -s eth0 duplex full autoneg off
# ethtool eth0
Settings for eth0:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Advertised link modes: 10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: No
        Speed: 100Mb/s
        Duplex: Full
        Port: MII
        PHYAD: 0
        Transceiver: external
        Auto-negotiation: off
        Current message level: 0x00000000 (0)

        Link detected: yes
# ping 10.3.3.15
PING 10.3.3.15 (10.3.3.15) 56(84) bytes of data.
From 10.3.3.11 icmp_seq=1 Destination Host Unreachable
From 10.3.3.11 icmp_seq=2 Destination Host Unreachable
From 10.3.3.11 icmp_seq=3 Destination Host Unreachable
^Z

PIN MUX for mii1

/* Module pin mux for mii1 */
static struct pinmux_config mii1_pin_mux[] = {
   {"mii1_rxerr.mii1_rxerr", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
   {"mii1_txen.mii1_txen", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"mii1_rxdv.mii1_rxdv", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
   {"mii1_txd3.mii1_txd3", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"mii1_txd2.mii1_txd2", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"mii1_txd1.mii1_txd1", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"mii1_txd0.mii1_txd0", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"mii1_txclk.mii1_txclk", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
   {"mii1_rxclk.mii1_rxclk", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
   {"mii1_rxd3.mii1_rxd3", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
   {"mii1_rxd2.mii1_rxd2", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
   {"mii1_rxd1.mii1_rxd1", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
   {"mii1_rxd0.mii1_rxd0", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLDOWN},
   {"mii1_col.mii1_col", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
   {"mii1_crs.mii1_crs", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
   {"mdio_data.mdio_data", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
   {"mdio_clk.mdio_clk", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT_PULLUP},
   {NULL, 0},
};

PIN MUX for mii2

/* Module pin mux for mii2 */
static struct pinmux_config mii2_pin_mux[] = {
    {"gpmc_wpn.mii2_rxerr", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
    {"gpmc_a0.mii2_txen", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
    {"gpmc_a1.mii2_rxdv", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
    {"gpmc_a2.mii2_txd3", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
    {"gpmc_a3.mii2_txd2", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
    {"gpmc_a4.mii2_txd1", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
    {"gpmc_a5.mii2_txd0", OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT},
    {"gpmc_a6.mii2_txclk", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
    {"gpmc_a7.mii2_rxclk", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
    {"gpmc_a8.mii2_rxd3", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
    {"gpmc_a9.mii2_rxd2", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
    {"gpmc_a10.mii2_rxd1", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
    {"gpmc_a11.mii2_rxd0", OMAP_MUX_MODE1 | AM33XX_PIN_INPUT_PULLDOWN},
    {"mdio_data.mdio_data", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
    {"mdio_clk.mdio_clk", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT_PULLUP},
    {NULL, 0},
};