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by TobiBS
Sat Jul 02, 2016 10:40 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 180
Views: 215967

Re: HOWTO: Create Custom HDMI modes

Are you using hdmi_cvt? No, I am using hdmi_timings as described in https://www.raspberrypi.org/documentation/hardware/raspberrypi/dpi/README.md My config is like the one mentioned there, with modified parameters for my display (not at hand, I am away from the Raspberry during the weekend, therefor...
by TobiBS
Sat Jul 02, 2016 2:47 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 180
Views: 215967

Re: HOWTO: Create Custom HDMI modes

forbids to set "too low frequencies"? The settings start to work somewhere around 32MHz, which is already too fast according to the spec (signals highs are too short according to spec). I found an answer somewhere else, it seems only specific values are allowed, have alook at: https://www.raspberry...
by TobiBS
Fri Jul 01, 2016 10:03 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 180
Views: 215967

Re: HOWTO: Create Custom HDMI modes

I am trying to make a display work with the DPI interface via GPIO, hence I am using my own HDMI mode for configuration. My problem is, that when trying to set the mode with any frequency as low as 18MHz (according to datasheet), there is no clock or other output from Raspberry on GPIOs whatsoever. ...

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