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TLV320DAC3100: About linux driver

Tao_2199
Genius 5770 points
Part Number: TLV320DAC3100
Other Parts Discussed in Thread: AM3352

Hello,

Regarding to linux driver on TLV320DAC3100, my customer has some question.

They use linux driver for TLV320AIC31XX.(Used DAC block.) and use AM3352 as MCU.

www.ti.com/.../TLV320AIC31XXSW-LINUX

TLV320DAC3100 is master and MCASP0(FSX ACLKX）in AM3352 is an input port.

When audio signal isn’t input to DAC from AM3352, PLL,DAC,HP DRIVE and Class-D AMP block in DAC3100 are power-down.

They think this seems specification of linux driver and asked about configure to output port on DAC side at other thread.(Please see below.)

https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1000670/tlv320dac3100-about-lrck-bck-at-power-down/3697833#3697833

 

(Question)

(1)Can linux driver modify to configure output port referring above thread by customer?

 

(2) Is there any problem on linux driver (AM3352) when the DAC is power-down, LRCK,BCK are stopped?

 

Regards,

Tao_2199

  • 0
    TI__Guru** 109745 points

    Hi Tao,

    I'll have to ask driver related questions to our software team, I can help with any hardware or device configuration questions you have.
    I'll update as soon as I have further information.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators

  • 0 in reply to Ivan Salazar
    Genius 5770 points

    Hello Ivan,

    Would you let me konow current status about my qustion?

    Regards,

    Tao_2199

  • 0 in reply to Tao_2199
    TI__Guru** 109745 points

    Hi Tao,

    At this moment the drivers of other devices than smart amps are not actively supported. No further comments I can provide regarding question 1. Regarding question 2 the device should be reinitialized to take it out of shutdown, we cannot provide further comments of what happens from the host processor perspective as it is not part of the device.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators