RK3399 DisplaPort no 4K resolution

fl0wtec · Posted at 3/22/2018 18:16:39

Last edited by fl0wtec In 3/23/2018 07:51 Editor

Hi,

the RK3399 has an USB-C/DP port.

Android reports max. resolution of 1920 x 1200 @ 60 Hz.

How to enable UHD/4K 3849 x 2160 @ 60Hz via DisplayPort on RK3399?

Thanks
fl0wtec

fl0wtec · Posted at 3/24/2018 02:17:19

Last edited by fl0wtec In 3/24/2018 02:18 Editor

Hi,
can you please post a link where I can get Androi 7.1.2 Firmware image for RK3399?

Google drive only lists 7.1.1:

Thanks
fl0wtec

fl0wtec · Posted at 3/24/2018 16:40:11

Last edited by fl0wtec In 3/24/2018 16:43 Editor

leung先森 Posted at 3/24/2018 09:09
http://en.t-firefly.com/doc/download/index/id/3.html

Hi,

with Firefly-RK3399_Android7.1.2_MP_180126 image it gets even worse.
Nothing to choose from anymore:

Auto defaults to 1920 x 1080 @60Hz:

Can you please enable DP output with 3840 x 2160@60Hz?

Thanks
BR
fl0wtec

fl0wtec · Posted at 3/31/2018 00:56:36

Dear leung先森,

can you please be more specific and tell us which .dts file exactly needs to be modified?

Can you please provide an image where DP output is enabled with 3840 x 2160@60Hz?

Thanks!
BR
fl0wtec