Hi,
We are using i.MX8M custom board with "fsl-yocto-L4.9.51_mx8mq-ga" release.
In our board when HDMI is enabled using DCSS, when we boot the board without connecting HDMI cable board hangs or restart after below print.
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[ 1.087673] msm_serial: driver initialized
[ 1.094624] [drm] Initialized
[ 1.107137] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 1.113788] [drm] No driver support for vblank timestamp query.
[ 1.119895] imx-drm display-subsystem: bound imx-dcss-crtc.0 (ops dcss_crtc_ops)
[ 1.139614] VIC 2, pixel clock 148500 kHz
[ 1.143906] Pixel clock frequency: 148500 kHz, character clock frequency: 148500, color depth is 8-bit.
[ 1.153317] VCO frequency is 5940000 kHz
[ 1.160104] CDN_API_General_Write_Register_blocking LANES_CONFIG ret = 0
[ 1.167710] [drm] hdmi-audio-codec driver bound to HDMI
[ 1.173017] imx-drm display-subsystem: bound 32c00000.hdmi (ops imx_hdp_imx_ops)
[ 1.180478] imx-drm display-subsystem: No connectors reported connected with modes
[ 1.188129] [drm] Cannot find any crtc or sizes - going 1024x768
[ 1.210408] Console: switching to colour frame buffer device 128x48
[ 1.229842] imx-drm display-subsystem: fb0: frame buffer device
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It boots without any issue when HDMI cable is connected, and also after booting, if cable removed and connected it works fine.
Thanks in advance,
Regards,
Yashavantha
