AM625: Audio IC, AMP inquiry

Oh Sangbong

Part Number: AM625
Other Parts Discussed in Thread: SK-AM62B-P1

Hello, I have a question regarding AM6252 custom board and Audio.

I created a custom board by modifying the circuit using the SK-AM62B-P1 base, and installed AM6252.

The same IC (TLV320AIC3106IRGZT) as the EVM is used, but the MONO pin output connection is used to output a single speaker after audio amp through the TPA3111D IC. The circuit diagram is as follows.

The current situation is IC recognized, but when you issue the sound output command, the message below appears.
I would like to inquire about registers or any additional settings for output.

Please reply.

root@am62xx-evm:~# aplay /home/BabyElephantWalk60.wav

Playing WAVE '/home/BabyElephantWalk60.wav' : [ 34.130519] tlv320aic3x 1-001b: Unable to sync registers 0x2-0x9. -121

Signed 16 bit Little Endian, Rate 22050 Hz, Mono

[ 34.148644] platform regulator-7: deferred probe pending

[ 34.154030] platform regulator-6: deferred probe pending

[ 34.164897] i2c 1-003b: deferred probe pending

[ 34.170175] platform 30200000.dss: deferred probe pending

[ 34.176377] platform fa20000.mmc: deferred probe pending

[ 34.191452] tlv320aic3x 1-001b: ASoC: error at snd_soc_component_update_bits on tlv320aic3x.1-001b for register: [0x00000025] -121

[ 34.203362] tlv320aic3x 1-001b: ASoC: error at snd_soc_component_update_bits on tlv320aic3x.1-001b for register: [0x00000033] -121

[ 34.215336] tlv320aic3x 1-001b: ASoC: error at snd_soc_component_update_bits on tlv320aic3x.1-001b for register: [0x0000003a] -121

[ 34.227226] tlv320aic3x 1-001b: ASoC: error at snd_soc_component_update_bits on tlv320aic3x.1-001b for register: [0x00000041] -121

[ 34.239166] tlv320aic3x 1-001b: ASoC: error at snd_soc_component_update_bits on tlv320aic3x.1-001b for register: [0x00000048] -121

[ 34.251057] tlv320aic3x 1-001b: ASoC: error at snd_soc_component_update_bits on tlv320aic3x.1-001b for register: [0x0000004f] -121

[ 34.262954] tlv320aic3x 1-001b: ASoC: error at snd_soc_component_update_bits on tlv320aic3x.1-001b for register: [0x00000056] -121

[ 34.274832] tlv320aic3x 1-001b: ASoC: error at snd_soc_component_update_bits on tlv320aic3x.1-001b for register: [0x0000005d] -121

[ 34.286789] tlv320aic3x 1-001b: ASoC: error at soc_component_write_no_lock on tlv320aic3x.1-001b for register: [0x0000002b] -121

[ 34.298490] tlv320aic3x 1-001b: ASoC: error at soc_component_write_no_lock on tlv320aic3x.1-001b for register: [0x0000002c] -121

over 1 year ago

0 Suren Porwar over 1 year ago

TI__Mastermind 28125 points

Hi,

I will route your query to our Audio team for a review of your design. In the meantime, Can you share the DTS file for the changes you made, so I can look from SW perspective if anything is missed/incorrect.

Best Regards,

Suren

0 pdjuandi over 1 year ago in reply to Suren Porwar

TI__Mastermind 29755 points

Hi,

On this error message, I will let the processor team to comment.

On the schematic for the audio, here are my feedback:

Recommend to place 0.47uF cap to gnd for unused analog input like LINE2L/R/MIC3L.
MCLK to codec should be coming from the host if codec is in slave mode. See section 2.1 of this apps. note.

Audio Serial Interface Configurations for Audio Codecs (Rev. A)

Place a LPF (R=100 and C=47nF) before connecting to audio amp. See section 2.4 of this apps. note.

Common Noise Issues in Audio Codecs (ti.com)

Regards.

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AM625: Audio IC, AMP inquiry