imx8mq hangs when reset board with button

[Belisko Marek]

Hello,

I'm trying to find the cause why my imx8mq based board hangs when it
is rebooted by reset button (works fine when init reset by reboot -f
in console).

By adding print messages I was able to track down in following code:
 ret = cdn_api_checkalive();
 printf("CDN_API_CheckAlive returned ret = %d\n", ret);
 if (ret)
       return -EPERM;

 ret = cdn_api_general_test_echo_ext_blocking(echo_msg,
                                                      echo_resp,
                                                      sizeof(echo_msg),
                                                      CDN_BUS_TYPE_APB);

cdn_api_general_test_echo_ext_blocking function never returns and it
blocks forever. Any idea what can be checked?

Boot log:
Loading Environment from MMC... OK
[*]-Video Link 0imx8m_hdmi_probe - 271
video_link_get_display_timings - 382
video_link_get_display_timings - 428
imx8m_hdmi_probe - 285
imx8m_dcss_get_timings_from_display - 429
video_link_get_display_timings - 382
video_link_get_display_timings - 428
imx8m_dcss_get_timings_from_display - 442
pixelclock 74250000, hlen 1280, vlen 720
imx8m_dcss_probe - 474
imx8m_dcss_probe - 477
imx8m_dcss_probe - 480
imx8m_hdmi_enable - 256
imx8m_hdmi_init - 130
CDN_API_Init completed
CDN_API_CheckAlive returned ret = 0

Thanks.

BR,

marek

-- 
as simple and primitive as possible
-------------------------------------------------
Marek Belisko - OPEN-NANDRA
Freelance Developer

Ruska Nova Ves 219 | Presov, 08005 Slovak Republic
Tel: +421 915 052 184
skype: marekwhite
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