iMX8MQ: DisplayPort support in Android

[pierluigi_p]

Hi,

as far as I can see from Android BSPs for iMX8 family, there is no support for DisplayPort for iMX8MQ.

The file signed_dp_imx8m.bin is not even available in the imx-image folder.

Using Android 9.0.0 v2.0.0, I hacked the AndroidUboot.mk and using the file signed_dp_imx8m.bin from Yocto (4.14.98 v2.0.1) I've been able to generate a uboot to enable the DP.

The DisplayPort seems working fine until I unplug and plug again the cable: the link does not come up again, although the driver sense the cable connection.

The unplug/plug sequence works fine using the HDMI.

Has anyone experience with this condition?

May this behavior be somehow related to this commit

   https://source.codeaurora.org/external/imx/linux-imx/commit/drivers/gpu/drm/imx/hdp/imx-hdp.c?h=p9.0...

Thanks

Best regards

Pier

[weidong_sun]

Hello Pier,

    According to feedback from Android design team, up to now, the latest android BSP(9.0.0-2.3.1) has not supported the Display Port yet.

Have a nice day!

BR,

Weidong