Michael P

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  1. Michael P

    Hdmi out from zybo

    I am using Zybo z7-20 board.
  2. Michael P

    Hdmi out from zybo

    Hi, I want to make a video processing ip on hdmi with Nexys Video. The hdmi signal will be generated by a Digilent Zybo board. I took the prebuilt images from petalinux repo for zybo. The Linux boots and display the terminal on a regulator monitor. Then, I connected the hdmi out from zybo to hdmi in port on nexys and monitor to nexys video hdmi out. For start, I just turned on the board with default configuratioin from qspi. The default configuration is a hdmi pass through because it works when I connect the input on nexys video to a raspberry pi. So, the monitor should display the terminal, but it doesn't. Taking a look at what dmesg prints, I've fount some interesting errors like: Registering SWP/SWPB emulation handler [ 1.068461] [drm] No max horizontal width in DT, using default 1920 [ 1.073394] [drm] No max vertical height in DT, using default 1080 [ 1.078249] OF: graph: no port node found in /amba_pl/xilinx_drm [ 1.082930] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 1.088193] [drm] No driver support for vblank timestamp query. [ 1.099048] mmc0: new high speed SDHC card at address aaaa [ 1.103540] mmcblk0: mmc0:aaaa SC16G 14.8 GiB [ 1.108887] mmcblk0: p1 p2 [ 2.109425] cdns-i2c e0004000.i2c: timeout waiting on completion [ 2.114099] [drm] Cannot find any crtc or sizes [ 2.117637] [drm] Initialized xilinx_drm 1.0.0 20130509 for amba_pl:xilinx_drm on minor 0 Then, it prints continuously this: cdns-i2c e0004000.i2c: timeout waiting on completion [ 11.479277] cdns-i2c e0004000.i2c: timeout waiting on completion [ 11.483903] [drm] Cannot find any crtc or sizes [ 11.487524] [drm] Initialized xilinx_drm 1.0.0 20130509 for amba_pl:xilinx_drm on minor 0 What is wrong with it? How could I fix it? On serial, the nexys video says : "Showing DVI input".