AM3352 audio decoding

Hi,

What Linux version are you using?

We use a linux-3.14.26-g2489c02.

Hi,
Can you please elaborate a little on your issue?
Are you using hdmi audio ? What command are you executing from userspace?
Does aplay works ? Can you share your audio device tree nodes?

Best Regards,
Yordan

Here is my environment :

linux-3.14.26-g2489c02

# Transmit clock & sync with 2 serializers with ahclkx
my_mcasp_1_pins_default: my_mcasp_1_pins_default {
pinctrl-single,pins = <
0x1ac ( PIN_INPUT | MUX_MODE0 ) /* (A14) mcasp0_ahclkx.mcasp0_ahclkx */
0x190 ( PIN_INPUT | MUX_MODE0 ) /* (A13) mcasp0_aclkx.mcasp0_aclkx */
0x194 ( PIN_INPUT | MUX_MODE0 ) /* (B13) mcasp0_fsx.mcasp0_fsx */
0x198 ( PIN_INPUT | MUX_MODE0 ) /* (D12) mcasp0_axr0.mcasp0_axr0 */
0x1a8 ( PIN_INPUT | MUX_MODE0 ) /* (D13) mcasp0_axr1.mcasp0_axr1 */
>;
};

speaker out ( no hdmi )

We will decoding the audio file by using ffmpeg.

Hi Ahn,

These are the MCASP pin mux settings, I mean what do the &mcasp1 { & sound { device tree nodes look like? Maybe the audio routing in your sound node needs to be modified to fit your case.
Also which board are you using? I've tested the audio on my am335x starter kit and it works.

Best Regards,
Yordan

I will use the CS4344.
I don't know how to setting the device tree.
Do you have a example?

Is it possible play the mp3 without i2c interface for the codec?