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HDMI DDC on linux-fslc/mainline with i.MX6

Question asked by Chris Conley on Aug 6, 2014
Latest reply on Aug 12, 2014 by Fabio Estevam

Hello all,

 

I've been trying to get HDMI up and running on the linux-fslc/mainline kernel (specifically 3.14.14), and there doesn't seem to be a way to use the actual DDC_SDA/SCL lines (e.g. via ROW3/COL3 mux) on the i.MX6Q/D SoCs.

Most of the available EVMs have the DDC i/o share a standard I2C channel, causing issues/tradeoffs with the 100kHz restriction on ddc traffic.

 

I know this support existed before (though crammed into the HDCP support) on older kernels, but is there a patchset for this support that I'm not finding?

 

Does someone know if there are plans to support this feature of the i.MX6 in mainline?

 

//Chris

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