topic I2S output is not working in i.MX Processors

I2S output is not working

hyunhoshin — Fri, 14 Oct 2016 05:10:25 GMT

I'm using i.MX6Q

and linux version is 3.0.35

My sound codec(ALC5629) connect throgh SD2_DAT0, SD2_DAT1, SD2_DAT2, SD2_DAT3

below is ssi port setting in board-mx6q_sabresd.c

---

static struct mxc_audio_platform_data alc5629_data = {
.ssi_num = 1,
.src_port = 2,
.ext_port = 4,
.init = mxc_alc5629_init.

};

---

and below is GPIO port setting in board-mx6q_sabresd.h

---

MX6Q_PAD_SD2_DAT0__AUDMUX_AUD4_RXD, //ADCDAT
MX6Q_PAD_SD2_DAT1__AUDMUX_AUD4_TXFS, //LRCK
MX6Q_PAD_SD2_DAT2__AUDMUX_AUD4_TXD, //DACDAT
MX6Q_PAD_SD2_DAT3__AUDMUX_AUD4_TXC, //BCLK

---

when playback wav file using aplay

no sound output and no signal that port(check using osciloscope)

how can i fix this problem?

Re: I2S output is not working

hyunhoshin — Fri, 14 Oct 2016 11:25:25 GMT

when play wav file using aplay. aplay is blocked

so i think pcm device is not working..

how can i check about this problem?

Re: I2S output is not working

igorpadykov — Mon, 17 Oct 2016 23:57:11 GMT

Hi hyunho

please check Chapter 8 Porting Audio Codecs to a Custom Board

attached Porting Guide document.

Best regards
igor
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