AD9361: Unhandled case in ad9361_tx_quad_calib

Wondering do you have a FIR filter loaded with some interpolation or decimation?

There is only one application controlling the IIO device? Right?

Can you share more information about this use case?

I don't think I ever come across something close. 

-Michael

Hi Michael, 

We have FIR filters but do not use interpolation or decimation. Out filters are asymmetric s in we do not use any in the RX chain and are applied to the TX size only when required to meet meet 3 dB specifications for specific waveforms. These filters were designed using AD9361 Filter Design Wizard 16.1.3-g924f0cd. The TX filters are used in 1 MHz output bandwidth steps from 1 MHz to 40 MHz. I can provide the filters if that helps to look at the setting therein. Note that the issue persists when FIR filters are disabled.

There is one application controlling the IIO device but it multi threaded to allow logical separation of the RX and TX chains but have a shared lock prior to changing any rates. The RX chain only configures the Fs initially and the TX chain is responsible for rate changes thereafter.

RX control signal is narrow band FSK or can be a tone. TX can be any modulation from CW to wideband waveforms. Our application is battery powered at as such we need to minimize Fs to reduce power consumption.

Hi,

I had a similar setup running today on our test bench.

Changing baseband rate between 60MSPS and 4MSPS in a tight loop.

No issues detected while running for 7 hours and exchanging millions of SPI messages.

# pwd
/sys/bus/platform/devices/e0006000.spi/spi_master/spi0/statistics

# grep "" *
bytes:206676953
bytes_rx:35620637
bytes_tx:171056319
errors:0
messages:68076769
spi_async:0
spi_sync:68076769
spi_sync_immediate:68076769
timedout:0
transfer_bytes_histo_0-1:32951328
transfer_bytes_histo_1024-2047:0
transfer_bytes_histo_128-255:0
transfer_bytes_histo_16-31:0
transfer_bytes_histo_16384-32767:0
transfer_bytes_histo_2-3:67854613
transfer_bytes_histo_2048-4095:0
transfer_bytes_histo_256-511:0
transfer_bytes_histo_32-63:0
transfer_bytes_histo_32768-65535:0
transfer_bytes_histo_4-7:889450
transfer_bytes_histo_4096-8191:0
transfer_bytes_histo_512-1023:0
transfer_bytes_histo_64-127:0
transfer_bytes_histo_65536+:0
transfer_bytes_histo_8-15:0
transfer_bytes_histo_8192-16383:0
transfers:101695391
transfers_split_maxsize:0
#

I think the issue on your side could be caused by a SPI issue.

Can you read all device attributes after the issue happened?

# cd /sys/bus/iio/devices/iio\:device0

# grep "" *

calib_mode:auto

calib_mode_available:auto manual manual_tx_quad tx_quad rf_dc_offs rssi_gain_step

dcxo_tune_coarse_available:[0 0 0]

dcxo_tune_fine_available:[0 0 0]

dev:252:0

ensm_mode:fdd

ensm_mode_available:sleep wait alert fdd pinctrl pinctrl_fdd_indep

filter_fir_config:FIR Rx: 0,0 Tx: 0,0

gain_table_config:<gaintable AD9361 type=FULL dest=3 start=1300000000 end=4000000000>

gain_table_config:-3, 0x00, 0x00, 0x20

gain_table_config:-3, 0x00, 0x00, 0x00

gain_table_config:-3, 0x00, 0x00, 0x00

gain_table_config:-2, 0x00, 0x01, 0x00

gain_table_config:-1, 0x00, 0x02, 0x00

gain_table_config:0, 0x00, 0x03, 0x00

gain_table_config:1, 0x00, 0x04, 0x00

gain_table_config:2, 0x00, 0x05, 0x00

gain_table_config:3, 0x01, 0x03, 0x20

gain_table_config:4, 0x01, 0x04, 0x00

gain_table_config:5, 0x01, 0x05, 0x00

gain_table_config:6, 0x01, 0x06, 0x00

gain_table_config:7, 0x01, 0x07, 0x00

gain_table_config:8, 0x01, 0x08, 0x00

gain_table_config:9, 0x01, 0x09, 0x00

gain_table_config:10, 0x01, 0x0A, 0x00

gain_table_config:11, 0x01, 0x0B, 0x00

gain_table_config:12, 0x01, 0x0C, 0x00

gain_table_config:13, 0x01, 0x0D, 0x00

gain_table_config:14, 0x01, 0x0E, 0x00

gain_table_config:15, 0x02, 0x09, 0x20

gain_table_config:16, 0x02, 0x0A, 0x00

gain_table_config:17, 0x02, 0x0B, 0x00

gain_table_config:18, 0x02, 0x0C, 0x00

gain_table_config:19, 0x02, 0x0D, 0x00

gain_table_config:20, 0x02, 0x0E, 0x00

gain_table_config:21, 0x02, 0x0F, 0x00

gain_table_config:22, 0x02, 0x10, 0x00

gain_table_config:23, 0x02, 0x2B, 0x20

gain_table_config:24, 0x02, 0x2C, 0x00

gain_table_config:25, 0x04, 0x27, 0x20

gain_table_config:26, 0x04, 0x28, 0x00

gain_table_config:27, 0x04, 0x29, 0x00

gain_table_config:28, 0x04, 0x2A, 0x00

gain_table_config:29, 0x04, 0x2B, 0x00

gain_table_config:30, 0x24, 0x21, 0x20

gain_table_config:31, 0x24, 0x22, 0x00

gain_table_config:32, 0x44, 0x20, 0x20

gain_table_config:33, 0x44, 0x21, 0x00

gain_table_config:34, 0x44, 0x22, 0x00

gain_table_config:35, 0x44, 0x23, 0x00

gain_table_config:36, 0x44, 0x24, 0x00

gain_table_config:37, 0x44, 0x25, 0x00

gain_table_config:38, 0x44, 0x26, 0x00

gain_table_config:39, 0x44, 0x27, 0x00

gain_table_config:40, 0x44, 0x28, 0x00

gain_table_config:41, 0x44, 0x29, 0x00

gain_table_config:42, 0x44, 0x2A, 0x00

gain_table_config:43, 0x44, 0x2B, 0x00

gain_table_config:44, 0x44, 0x2C, 0x00

gain_table_config:45, 0x44, 0x2D, 0x00

gain_table_config:46, 0x44, 0x2E, 0x00

gain_table_config:47, 0x44, 0x2F, 0x00

gain_table_config:48, 0x44, 0x30, 0x00

gain_table_config:49, 0x44, 0x31, 0x00

gain_table_config:50, 0x64, 0x2E, 0x20

gain_table_config:51, 0x64, 0x2F, 0x00

gain_table_config:52, 0x64, 0x30, 0x00

gain_table_config:53, 0x64, 0x31, 0x00

gain_table_config:54, 0x64, 0x32, 0x00

gain_table_config:55, 0x64, 0x33, 0x00

gain_table_config:56, 0x64, 0x34, 0x00

gain_table_config:57, 0x64, 0x35, 0x00

gain_table_config:58, 0x64, 0x36, 0x00

gain_table_config:59, 0x64, 0x37, 0x00

gain_table_config:60, 0x64, 0x38, 0x00

gain_table_config:61, 0x65, 0x38, 0x20

gain_table_config:62, 0x66, 0x38, 0x20

gain_table_config:63, 0x67, 0x38, 0x20

gain_table_config:64, 0x68, 0x38, 0x20

gain_table_config:65, 0x69, 0x38, 0x20

gain_table_config:66, 0x6A, 0x38, 0x20

gain_table_config:67, 0x6B, 0x38, 0x20

gain_table_config:68, 0x6C, 0x38, 0x20

gain_table_config:69, 0x6D, 0x38, 0x20

gain_table_config:70, 0x6E, 0x38, 0x20

gain_table_config:71, 0x6F, 0x38, 0x20

gain_table_config:</gaintable>

in_out_voltage_filter_fir_en:0

in_temp0_input:29825

in_voltage0_gain_control_mode:slow_attack

in_voltage0_hardwaregain:71.000000 dB

in_voltage0_hardwaregain_available:[-3 1 71]

in_voltage0_rf_port_select:A_BALANCED

in_voltage0_rssi:122.25 dB

in_voltage2_offset:57

in_voltage2_raw:578

in_voltage2_scale:0.305250

in_voltage_bb_dc_offset_tracking_en:1

in_voltage_filter_fir_en:0

in_voltage_gain_control_mode_available:manual fast_attack slow_attack hybrid

in_voltage_quadrature_tracking_en:1

in_voltage_rf_bandwidth:18000000

in_voltage_rf_bandwidth_available:[200000 1 56000000]

in_voltage_rf_dc_offset_tracking_en:1

in_voltage_rf_port_select_available:A_BALANCED B_BALANCED C_BALANCED A_N A_P B_N B_P C_N C_P TX_MONITOR1 TX_MONITOR2 TX_MONITOR1_2

in_voltage_sampling_frequency:3999999

in_voltage_sampling_frequency_available:[2083333 1 61440000]

grep: multichip_sync: Permission denied

name:ad9361-phy

out_altvoltage0_RX_LO_external:0

out_altvoltage0_RX_LO_fastlock_load:0

out_altvoltage0_RX_LO_fastlock_save:0 103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103

out_altvoltage0_RX_LO_fastlock_store:0

out_altvoltage0_RX_LO_frequency:2400000000

out_altvoltage0_RX_LO_frequency_available:[325000000 1 3800000000]

out_altvoltage0_RX_LO_powerdown:0

out_altvoltage1_TX_LO_external:0

out_altvoltage1_TX_LO_fastlock_load:0

out_altvoltage1_TX_LO_fastlock_save:0 94,94,94,94,94,94,94,94,94,94,94,94,94,94,94,94

out_altvoltage1_TX_LO_fastlock_store:0

out_altvoltage1_TX_LO_frequency:2449999998

out_altvoltage1_TX_LO_frequency_available:[325000000 1 3800000000]

out_altvoltage1_TX_LO_powerdown:0

out_voltage0_hardwaregain:-10.000000 dB

out_voltage0_hardwaregain_available:[-89.750000 0.250000 0.000000]

out_voltage0_rf_port_select:A

out_voltage0_rssi:0.00 dB

out_voltage2_raw:306

out_voltage2_scale:1.000000

out_voltage3_raw:306

out_voltage3_scale:1.000000

out_voltage_filter_fir_en:0

out_voltage_rf_bandwidth:18000000

out_voltage_rf_bandwidth_available:[200000 1 40000000]

out_voltage_rf_port_select_available:A B

out_voltage_sampling_frequency:3999999

out_voltage_sampling_frequency_available:[2083333 1 61440000]

rssi_gain_step_error:lna_error: 0 0 0 0

rssi_gain_step_error:mixer_error: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

rssi_gain_step_error:gain_step_calib_reg_val: 0 0 0 0 0

rx_path_rates:BBPLL:1023999992 ADC:31999999 R2:15999999 R1:7999999 RF:3999999 RXSAMP:3999999

trx_rate_governor:nominal

trx_rate_governor_available:nominal highest_osr

tx_path_rates:BBPLL:1023999992 DAC:31999999 T2:15999999 T1:7999999 TF:3999999 TXSAMP:3999999

uevent:MAJOR=252

uevent:MINOR=0

uevent:DEVNAME=iio:device0

uevent:DEVTYPE=iio_device

uevent:OF_NAME=ad9361-phy

uevent:OF_FULLNAME=/amba/spi@e0006000/ad9361-phy@0

uevent:OF_COMPATIBLE_0=adi,ad9363a

uevent:OF_COMPATIBLE_N=1

xo_correction:39999990

xo_correction_available:[39991991 1 40007989]

# 

CTRL-A Z for help | 115200 8N1 | NOR | Minicom 2.8 | VT102 | Offline | ttyUSB8                                                                                                                                    

And then also a register?

# iio_reg ad9361-phy 0x37
0xa
#

-Michael
 

Thanks, will do as soon as I duplicate the issue

One more question do you see this issue only on one setup, or can you replicate this on different units as well?

-Michael

We have seen the issue on multiple SoMs but by far a minority. So out of about 1500 SoMs I'd say that I have seen the issue personally about 20 times. It is likely triggered by a specific sequence in our test is documented and are following.

We have seen the issue on multiple SoMs but by far a minority. So out of about 1500 SoMs I'd say that I have seen the issue personally about 20 times. It is likely triggered by a specific sequence in our test is documented and are following.