On Mon, Apr 07, 2014 at 12:05:35PM +0200, Philipp Zabel wrote:
Did you get any chance to reproduce this dual display issue? Now it shows on mainline kernel.
I have not yet reproduced, but I've sent a patch today ("imx-drm: imx-drm-core: Fix imx_drm_encoder_get_mux_id") that might fix this.
Yes, it fixes my issue.
And I see another HDMI regression with my testing on mainline kernel. I can have my HDMI work at 1920x1080 with v3.14 kernel, but it can only probes 1024x768 with the mainline today. The Xorg.0.log are attached below. The hardware and user space are same, so I guess this is another issue introduced by the recently kernel driver changes?
Hmm, not sure. Have you updated to the i2c-ddc-bus phandle property as described in Documentation/devicetree/bindings/staging/imx-drm/hdmi.txt?
That's indeed the cause of my problem. Thanks, Philipp.
Shawn