Audio Chip Bringup¶

Goal
Findings
Further Information

Goal ¶

Given that I2C works with the Yocto kernel (see Yocto Kernel Bringup on Customer Hardware), make I2S communication work.

Findings ¶

Check Intel application notes
Configure driver. Devicetree?
- Connect chip to I2S signals (AUDIO_MCK, I2S0_CK, I2S0_LRCK, I2S0_SDOUT). Where to find I2S implementation in kernel?
Configure userspace? Which ALSA (?) device?

Further Information ¶

Datasheet TLV320DAC3203IRGER
Datasheet TLV320DAC3203
Linux Driver
- “TLV320DAC3203: Drive Code for TLV320DAC3203IRGER”, suggesting that TLV320AIC32x4 is compatible with TLV320DAC3203. Driver is tlv320aic32x4.c.
- “TLV320AIC31XXSW-LINUX (Linux Driver for TLV320AIC31XX)”, suggesting that tlv320aic31xx.c is responsible for the device.