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