imx6 hdmi-audio error

[eric_lee1]

Hi,

I am working on i.MX6 custom board. Everything works fine except the hdmi-audio. My Linux kernel kernel version is 3.10.53

Everytime when I boot up, I got errors.

imx-hdmi-audio imx-hdmi-audio: HDMI Video is not ready!

imx-hdmi-audio imx-hdmi-audio: ASoC: can't open platform imx-hdmi-audio: -22

The video part is fine. The i2c is also fine.

ALSA device list:

  #0: sgtl5000 sound card

  #1: imx-hdmi-soc

It seems that the hdmi-audio register cannot be register by kernel. I cannot use alsamixer to access the registers. Someone says adding consolebalnk at u-boot environmental variables will work this around, but no luck for me.

This is my uboot paramenters.

optargs="consoleblank=0 video=mxcfb0:dev=hdmi,1280x720M@60,if=RGB24"

# alsamixer -c 1

lqqqqqqqqqqqqqqqqqqqqqqqqqqqq AlsaMixer v1.0.27.2 qqqqqqqqqqqqqqqqqqqqqqqqqqqqqk

x Card: imx-hdmi-soc                                   F1:  Help               x

x Chip:                                                F2:  System information x

x View: F3:[Playback] F4: Capture  F5: All             F6:  Select sound card  x

x Item: HDMI Support Channels                          Esc: Exit               x

x                                                                              x

x        lqqk               lqqk               lqqk               lqqk         x

x        x  x               x  x               x  x               x  x         x

x        x  x               x  x               x  x               x  x         x

x        x  x               x  x               x  x               x  x         x

x        x  x               x  x               x  x               x  x         x

x        x  x               x  x               x  x               x  x         x

x        x  x               x  x               x  x               x  x         x

x        x  x               x  x               x  x               x  x         x

x        x  x               x  x               x  x               x  x         x

x        x  x               x  x               x  x               x  x         x

x        x  x               x  x               x  x               x  x         x

x        x  x               x  x               x  x               x  x         x

x        mqqj               mqqj               mqqj               mqqj         x

x         0                  0                 0<>0                0           x

x<HDMI Support Chann>HDMI Support Forma HDMI Support Rates HDMI Support Rates  x

x                                             Front               Rear         x

x                                                                              x

mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj

root@imx6q1gsmarc:~# aplay -D plughw:1,0 PartOfMe.wav -v

imx-hdmi-audio imx-hdmi-audio: HDMI Video is not ready!

imx-hdmi-audio imx-hdmi-audio: ASoC: can't open platform imx-hdmi-audio: -22

aplay: main:722: audio open error: Invalid argument

root@imx6q1gsmarc:~#

Could someone help? Thanks.

-Eric

[igorpadykov]

Hi Eric

I would suggest to test it with new BSP

L3.14.28_1.0.0_iMX6QDLS_BUNDLE : i.MX 6Quad, i.MX 6Dual, i.MX 6DualLite, i.MX 6Solo

Linux Binary Demo Files and Linux BSP Documentation 

Size (K): 1479000 Format: gz Rev #: L3.14.28_1.0.0 Modified: 4/10/2015

Best regards

igor

[eric_lee1]

igor,

I spent a bit time working on 3.14 today. The results are the same. The HDMI Video part and SGTL5k audio are all fine. The hdmi-audio still got the same errors.Any idea?

root@arm:~# uname -a

Linux arm 3.14.28-132790-g91cf351-dirty #2 SMP PREEMPT Mon Apr 13 17:53:55 CST 2015 armv7l armv7l armv7l GNU/Linux

root@arm:~# aplay -D plughw:1,0 PartOfMe.wav -v

imx-hdmi-audio imx-hdmi-audio: HDMI Video is not ready!

imx-hdmi-audio imx-hdmi-audio: ASoC: can't open platform imx-hdmi-audio: -22

aplay: main:722: audio open error: Invalid argument

root@arm:~#

[igorpadykov]

Hi Eric

issue may be caused by non-CEA mode panel

Table 33-3. Video Modes  IMX6DQRM

http://boundarydevices.com/hdmi/

Best regards

igor

[eric_lee1]

igor,

I suspected that before. However, my u-boot pass 1920x1080M@60 parameters to kernel and the HDMI monitor can detect the resolutions that I set. The 1920x1080M@60 should be CEA mode.

-Eric

[igorpadykov]

Hi Eric

I would suggest to check sect.7.4 Pulseaudio input/output settings attached document

and try this LCD with i.MX6 Sabre board

~igor

[eric_lee1]

igor,

It turn out our hardware problems. Thanks for your supports.

-Eric

[weiqing]

Hi Eric,

I encounter the same problem as yours, only HDMI audio not working.

Can you share what hardware problem did you find out?

Thanks in advance.