Audio pad on milkv-duo board - CV1800B

Duo
1

Hello, thank’s for the very good documentation around the CV1800B and milk-v board.

I’m struggeling into getting the audio out connection,
from documentation there is a PAD_AUD_AOUTR but i can’t find any information on where the pad is placed and the output signal

any help or pointer welcome

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2

Thank you for your attention.

The PAD_AUD_AOUTR pin is used as the control pin for the blue LED on Duo, so there is no audio output functionality in the definition of Duo.

3

Hi, it’s seems that I2S2 can be used to add max98357a and speaker.
I am still testing.

  1. Machine driver
  2. Dtsi config
  3. Pin config

Also, mic may be used by PAD_AUD_AINL_MIC.

4

Hi, I want to know how to hse I2S on Milk-v Duo, can you help me?

5

Hi, I am still testing.
Adding machine driver is ok.
But the sound card still hasn’t come up.

Recently, I will create a post documenting the use of i2s.
You can follow it in the future.

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6

Hi
Two posts have been updated, one specifically introducing i2s2 and the other explaining how to add codec drivers.

【i2s】Milk-V Duo添加speaker——i2s2 - Duo - MilkV Community

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