i.MX ProcessorsのトピックRe: hdmi without ddc or i2c

hdmi without ddc or i2c

xiaojun_huang — Tue, 25 Sep 2018 07:31:52 GMT

Hello, I'm work with imx6q custon board.

We made changes on Android O, using HDMI as the display output.

But we are not connected to I2C or DDC to HDMI, only TMDS and CLOCK, and there is no HPD signal and CEC signal.
We hope to force the output of the HDMI signal. What should we do?
I look forward to hearing from you.

Re: hdmi without ddc or i2c

igorpadykov — Tue, 25 Sep 2018 23:30:41 GMT

Hi Jun

one can look at tutorial from boundary devices

DVI Support on i.MX6 boards - Boundary Devices

Best regards
igor
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Re: hdmi without ddc or i2c

xiaojun_huang — Wed, 26 Sep 2018 04:07:06 GMT

Thanks for your replay.

This patch uses HDMI_DVI_IH_STAT instead of HPD detection,

but I hope that the TMDS signal can be forced out without interrupt method.

Is this feasible?
How should I modify it?