Linux/TLV320AIC3100: How to enable Equalizer settings?

Aniket Jesu

Part Number: TLV320AIC3100

Tool/software: Linux

Hello TI,

We are having a custom board with TI processor AM3351,
and we are using a TI codec TLV320AIC3100 for audio playback.
Audio playback is perfectly playing fine.

For using the DAC processing blocks in adaptive mode, I changed the page to 8 by writing 8 into register 0, then I tried to write into Page 8 register 1 Bit D2 for enabling adaptive filtering mode and then read back the register value. But the read back register value is always 0. Do you have any idea, what may be the issue ?

Linux version:
4.1.18-gbbe8cfc #1 PREEMPT Tue Dec 5 17:22:08 IST 2017 armv7l GNU/Linux
We have got linux sources from this TI link: http://software-dl.ti.com/processor-sdk-linux/esd/AM335X/04_01_00_06/index_FDS.html
This is linux processor sdk from TI.
And we have built this branch : processor-sdk-linux-02.00.02 using yocto build with arago-tmp-external-linaro-toolchain.

thanks,

aniket

over 7 years ago

0 Steve-Wilson over 7 years ago

TI__Mastermind 30220 points

Aniket,

I am as confused as you. I can set this on the EVM with out any problems, It doesn't matter if the DAC is powered up or not. can you read back register 0 and make sure you are indeed on page 8?

best regards,
-Steve wilson

0 Aniket Jesu over 7 years ago in reply to Steve-Wilson

Prodigy 200 points

Hey Steve,

Thanks for the reply, I got it working. Page selections was the problem. In TLV driver, regmap_write seems to have some problem if I write page 8 registers, now using i2c_smbus_write_byte_data for write.

Regards,

aniket

0 Steve-Wilson over 7 years ago in reply to Aniket Jesu

TI__Mastermind 30220 points

Aniket,

Good to know. We are in the process of updating some of our drivers, although I believe at this time the AIC31xx is not at the top of the list.

best regards,
-Steve Wilson

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Linux/TLV320AIC3100: How to enable Equalizer settings?