AnsweredAssumed Answered

HDMI in i.MX8M

Question asked by yashavantha shetty on Sep 25, 2018
Latest reply on Jan 22, 2019 by Aditya Singhal



We are using i.MX8M custom board with "fsl-yocto-L4.9.51_mx8mq-ga" release.

We are getting below errors in HDMI.


In uboot:


No panel detected: default to HDMI
Display: HDMI (1920x1080)
HDMI enable failed!



In Kernel:


[    1.179680] [drm] Initialized
[    1.189959] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    1.196596] [drm] No driver support for vblank timestamp query.
[    1.202653] imx-drm display-subsystem: bound imx-dcss-crtc.0 (ops dcss_crtc_ops)
[    2.717769] NO HDMI FW running
[    2.720838] [drm:imx_hdp_imx_bind] *ERROR* Failed to initialise HDP PHY
[    2.727489] imx-drm display-subsystem: failed to bind 32c00000.hdmi (ops imx_hdp_imx_ops): -6
[    2.736123] imx-drm display-subsystem: master bind failed: -6


Looks like in both Uboot and kernel its failing in "CDN_API_CheckAlive()" function.

what may be the reason for this?


Thanks in advance,