i.MX Processorsのトピックimx6q sgtl5000 problem

imx6q sgtl5000 problem

zhanghuan — Sun, 10 Apr 2016 12:31:39 GMT

hello, everyone. I'm facing some problem about sgtl5000. I have a board based on imx6q, and use sgtl5000 instead of wm8962. I have add the driver for sgtl5000. When booting, I can see it has been recognised correctly, but there is no sound at all. Could anyone give me some ideas?

part of the log is following:

sgtl5000 1-000a: sgtl5000 revision 17

mmcblk0boot1: unknown partition table

print_constraints: 1-000a: 850 <--> 1600 mV at 1200 mV normal

mmcblk0boot0: unknown partition table

asoc: sgtl5000 <-> imx-ssi.1 mapping ok

hub 2-1:1.0: USB hub found

imx_3stack asoc driver

hub 2-1:1.0: 4 ports detected

Initialize HDMI-audio failed. Load HDMI-video first!

ALSA device list:

#0: sgtl5000-audio

Bead regards,

Huan

Re: imx6q sgtl5000 problem

gary_bisson — Sun, 10 Apr 2016 17:01:36 GMT

Hi,

Please specify:

- Linux kernel version (3.10.x or 3.14.x etc)

- OS (Android, Linux Yocto/Ubuntu/Buildroot)

If you have amixer available you can try to turn all the volumes up.

Regards,

Gary

Re: imx6q sgtl5000 problem

igorpadykov — Mon, 11 Apr 2016 00:30:14 GMT

Hi zhang

since there is no output, may be recommended to check signals with

oscilloscope.

Sgtl5000 is used on i.MX6 boundary devices boards (not used on nxp reference

boards) and usage is summarized on

https://boundarydevices.com/audio-output-selection-under-linux-on-i-mx6/

Best regards

igor