02-06-2019, 02:46 PM
The Pinebook Pro will be sold only with 1080p screen which is slightly unfortunate, so I am looking at upgrading the eDP panel with something of higher resolution. Doing so is e.g. popular with some ThinkPads, and not difficult as long as the screen matches the system board and chassis.
I visited the FOSDEM booth last weekend, and asked whether it would be possible to swap the screen, and what would be the limitations regarding the screen resolution. The answer was basically, I need to know what I am doing (ok), not all eDP screens are compatible (I figured as much), and the limitations would be the same as for DP (ie. 4K@60Hz).
However, I looked in the RK3399 datasheet (v1.8) afterwards, and while DP indeed supports 4K@60Hz, the eDP PHY is reported as limited to 2.7 Gbps/lane. That would not be sufficient for 4K/UHD, maybe barely for WQHD+. Can I get some clarification what is the maximum bandwidth/resolution for the internal panel?
I visited the FOSDEM booth last weekend, and asked whether it would be possible to swap the screen, and what would be the limitations regarding the screen resolution. The answer was basically, I need to know what I am doing (ok), not all eDP screens are compatible (I figured as much), and the limitations would be the same as for DP (ie. 4K@60Hz).
However, I looked in the RK3399 datasheet (v1.8) afterwards, and while DP indeed supports 4K@60Hz, the eDP PHY is reported as limited to 2.7 Gbps/lane. That would not be sufficient for 4K/UHD, maybe barely for WQHD+. Can I get some clarification what is the maximum bandwidth/resolution for the internal panel?
