Genio 700-EVK
This page provides board-specific information on the display interfaces of the Genio 700-EVK. For common display and compositor information, please visit the Display page.
Display Interfaces on Genio 700-EVK
IoT Yocto supports four display interfaces on Genio 700-EVK:
DisplayPort(DP) through USB Type-C port
Embedded Display Port(eDP) with eDP Panel
AUO G156han03
With an additional IT6122 Converter Daughter Board for Genio 700-EVK, v23.1 now supports DSI0 to LVDS.
DSI0 to LVDS with LVDS Panel
KOE TX18D204VM0BAA
As of the v23.1 release, there are more display combinations supported. In addition to dual display combinations provided in v23.0, v23.1 adds headless and single display combinations.
The display system has two different pipelines - VDOSYS0 and VDOSYS1 - that can be used for any of the dual display combinations. These pipelines are abstracted as different “crtc” in the DRM framework.
VDOSYS0 provides 3840x2160, 30Hz refresh rate, and VDOSYS1 provides 3840x2160, 60Hz refresh rate.
Default rity-demo-image enables dual display DSI and HDMI. Other display combinations can be enabled by loading the device tree overlay during the flash programming process.
|
|
|
|---|---|---|
top view without DSI panel installed (showing eDP, HDMI, DPoC) |
top view with DSI panel installed |
bottom view with DSI panel installed (showing DSI0, DSI1) |
Note
DSI1 port (LCM2) is still not supported on IoT Yocto in v23.1.
The LVDS connector shares the same data lanes with the DSI0 connector, so only one of them can be used at the same time.
Lists of Display Device Tree Overlay
Here are lists of all available display combination device tree overlay dtbos and description link of each dtbo.
dtbo |
Description |
|---|---|
No need dtbo |
dtbo |
Description |
|---|---|
display-headless.dtbo |
dtbo |
Description |
|---|---|
display-dsi.dtbo |
|
display-dsi2lvds.dtbo |
|
display-edp.dtbo |
|
display-hdmi.dtbo |
|
display-dp.dtbo |
dtbo |
Description |
|---|---|
display-dsiedp.dtbo |
|
display-dsidp.dtbo |
|
display-lvdsedp.dtbo |
|
display-lvdshdmi.dtbo |
|
display-lvdsdp.dtbo |
|
display-edphdmi.dtbo |
|
display-edpdp.dtbo |
|
display-hdmidp.dtbo |
DSI0 + HDMI
DSI0 + HDMI are the default dual display interfaces for the prebuilt rity-demo-image. A DSI panel is pre-connected to G700 EVK.
To restore the device tree setting back to the default device tree of the Genio 700-EVK board, flash the board with:
genio-flash -i rity-demo-image
Note
gpu-mali.dtbo is needed for showing Weston Desktop. If gpu-mali.dtbo is not loaded, a text-based user interface would be seen.
In v23.1 gpu-mali.dtbo and video.dtbo are be default loaded when flashing with genio-flash. No extra –load-dtbo needed for gpu-mali.dtbo.
After boot into the console you can use modeprint mediatek command to check if both DSI0 and HDMI ports have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 2
count_encoders : 2
count_crtcs : 2
count_fbs : 0
Connector: DSI-1
id : 32
encoder id : 31
conn : connected
size : 95x151 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "1200x1920" 1200x1920 60
Connector: HDMI-A-1
id : 34
encoder id : 33
conn : connected
size : 600x340 (mm)
count_modes : 33
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 33
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 60
...
The associated display data pipeline can process up to 2.5K(2560 x 1600) with 60Hz refresh rate for DSI0, and 4K(3840 x 2160) with 60Hz refresh rate for HDMI.
Headless
Headless means that Yocto works without enabling any physical display connector. There is a virtual display at /dev/dri/renderD128 prepared for offline rendering.
To enable Headless, load the overlay file display-headless.dtbo during flashing process:
genio-flash -i rity-demo-image --load-dtbo display-headless.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-headless.dtbo kernel mmc0boot1
After boot into the console you will see the following error log which is because there is no physical display for weston desktop rendering
[FAILED] Failed to start Weston, a compositor, as a system service.
See 'systemctl status weston.service' for details.
You can use modeprint mediatek command to check if headless has been properly configured by checking if connector count equals 0:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 0
count_encoders : 0
DSI0
To enable DSI0 as the only display connector, load the overlay file display-dsi.dtbo during flashing process:
genio-flash -i rity-demo-image --load-dtbo display-dsi.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-dsi.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if DSI0 port have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 1
count_encoders : 1
count_crtcs : 2
count_fbs : 0
Connector: DSI-1
id : 32
encoder id : 31
conn : connected
size : 95x151 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "1200x1920" 1200x1920 60
The associated display data pipeline can process up to 2.5K(2560 x 1600) with 60Hz refresh rate for DSI0.
DSI0 to LVDS
To enable DSI0 to LVDS as the only display connector, load the overlay file display-dsi2lvds.dtbo during flashing process:
genio-flash -i rity-demo-image --load-dtbo display-dsi2lvds.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-dsi2lvds.dtbo kernel mmc0boot1
Note
Since LVDS shares the same data lanes with DSI0, the connector seen in modeprint is DSI-1.
For other LVDS usage in multi display dtbos, e.g. LVDS + eDP, the file name of dtbo should look like “display-dsi2lvdsedp.dtbo”, but to keep it short, we strip “dsi2” from the file name, thus it becomes “display-lvdsedp.dtbo”. The same rule applies to other dtbo files supporting multi-display.
After boot into the console you can use modeprint mediatek command to check if LVDS (in DSI-1) port have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 1
count_encoders : 1
count_crtcs : 2
count_fbs : 0
Connector: DSI-1
id : 32
encoder id : 31
conn : connected
size : 87x155 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "1920x1080" 1920x1080 60
The associated display data pipeline can process up to FHD(1920 x 1080) with 60Hz refresh rate for LVDS.
eDP
To enable eDP as the only display connector, load the overlay file display-edp.dtbo during flashing process:
genio-flash -i rity-demo-image --load-dtbo display-edp.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-edp.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if eDP port have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 1
count_encoders : 1
count_crtcs : 2
count_fbs : 0
Connector: eDP-1
id : 32
encoder id : 31
conn : connected
size : 340x190 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "1920x1080" 1920x1080 60
The associated display data pipeline can process up to 2.5K(2560 x 1600) with 60Hz refresh rate for eDP.
HDMI
To enable HDMI as the only display connector, load the overlay file display-hdmi.dtbo during flashing process:
genio-flash -i rity-demo-image --load-dtbo display-hdmi.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-hdmi.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if HDMI port have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 1
count_encoders : 1
count_crtcs : 2
count_fbs : 0
Connector: HDMI-A-1
id : 32
encoder id : 31
conn : connected
size : 700x390 (mm)
count_modes : 39
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 60
...
The associated display data pipeline can process up to 4K(3840 x 2160) with 60Hz refresh rate for HDMI.
DP
To enable DP as the only display connector, load the overlay file display-dp.dtbo during flashing process:
genio-flash -i rity-demo-image --load-dtbo display-dp.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-dp.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if DP port have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 1
count_encoders : 1
count_crtcs : 2
count_fbs : 0
Connector: DP-1
id : 32
encoder id : 31
conn : connected
size : 700x390 (mm)
count_modes : 27
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 30
...
The associated display data pipeline can process up to 4K(3840 x 2160) with 60Hz refresh rate for DP.
DSI0 + eDP
You can configure the DSI0 + eDP combination with:
genio-flash -i rity-demo-image --load-dtbo display-dsiedp.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-dsiedp.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if both DSI0 and eDP ports have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 2
count_encoders : 2
count_crtcs : 2
count_fbs : 0
Connector: DSI-1
id : 32
encoder id : 31
conn : connected
size : 95x151 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "1200x1920" 1200x1920 60
Connector: eDP-1
id : 34
encoder id : 33
conn : connected
size : 340x190 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 33
Mode: "1920x1080" 1920x1080 60
The associated display data pipeline can process up to 2.5K(2560 x 1600) with 60Hz refresh rate for DSI0, and 2.5K(2560 x 1600) with 60Hz refresh rate for eDP.
DSI0 + DP
To enable DSI0 + DP, load the dtbo file display-dsidp.dtbo during flashing process:
genio-flash -i rity-demo-image --load-dtbo display-dsidp.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-dsidp.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if both DSI0 and DP ports have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 2
count_encoders : 2
count_crtcs : 2
count_fbs : 0
Connector: DSI-1
id : 32
encoder id : 31
conn : connected
size : 95x151 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "1200x1920" 1200x1920 60
Connector: DP-1
id : 34
encoder id : 33
conn : connected
size : 600x340 (mm)
count_modes : 33
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 33
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 60
...
The associated display data pipeline can process up to 2.5K(2560 x 1600) with 60Hz refresh rate for DSI0, and 4K(3840 x 2160) with 60Hz refresh rate for DP.
LVDS + eDP
You can configure the LVDS + eDP combination with:
genio-flash -i rity-demo-image --load-dtbo display-lvdsedp.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-lvdsedp.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if both LVDS (in DSI-1) and eDP ports have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 2
count_encoders : 2
count_crtcs : 2
count_fbs : 0
Connector: DSI-1
id : 32
encoder id : 31
conn : connected
size : 87x155 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "1920x1080" 1920x1080 60
Connector: eDP-1
id : 34
encoder id : 33
conn : connected
size : 340x190 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 33
Mode: "1920x1080" 1920x1080 60
The associated display data pipeline can process up to FHD(1920 x 1080) with 60Hz refresh rate for LVDS, and 2.5K(2560 x 1600) with 60Hz refresh rate for eDP.
LVDS + HDMI
To enable LVDS + HDMI, load the dtbo file display-lvdshdmi.dtbo during flashing process:
genio-flash -i rity-demo-image --load-dtbo display-lvdshdmi.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-lvdshdmi.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if both LVDS (in DSI-1) and HDMI ports have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 2
count_encoders : 2
count_crtcs : 2
count_fbs : 0
Connector: DSI-1
id : 32
encoder id : 31
conn : connected
size : 87x155 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "1920x1080" 1920x1080 60
Connector: HDMI-A-1
id : 34
encoder id : 33
conn : connected
size : 700x390 (mm)
count_modes : 39
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 33
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 60
...
The associated display data pipeline can process up to 2.5K(2560 x 1600) with 60Hz refresh rate for LVDS, and 4K(3840 x 2160) with 60Hz refresh rate for HDMI.
LVDS + DP
To enable LVDS + DP, load the dtbo file display-lvdsdp.dtbo during flashing process:
genio-flash -i rity-demo-image --load-dtbo display-lvdsdp.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-lvdsdp.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if both LVDS (in DSI-1) and DP ports have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 2
count_encoders : 2
count_crtcs : 2
count_fbs : 0
Connector: DSI-1
id : 32
encoder id : 31
conn : connected
size : 87x155 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "1920x1080" 1920x1080 60
Connector: DP-1
id : 34
encoder id : 33
conn : connected
size : 700x390 (mm)
count_modes : 27
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 33
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 30
...
The associated display data pipeline can process up to 2.5K(2560 x 1600) with 60Hz refresh rate for LVDS, and 4K(3840 x 2160) with 60Hz refresh rate for DP.
eDP + HDMI
To enable Embedded DP and the AUO G156HAN03 panel, load the overlay file:
genio-flash -i rity-demo-image --load-dtbo display-edphdmi.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-edphdmi.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if both eDP and HDMI ports have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 2
count_encoders : 2
count_crtcs : 2
count_fbs : 0
Connector: eDP-1
id : 32
encoder id : 31
conn : connected
size : 340x190 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "1920x1080" 1920x1080 60
Connector: HDMI-A-1
id : 34
encoder id : 33
conn : connected
size : 600x340 (mm)
count_modes : 33
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 33
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 60
...
The associated display data pipeline can process up to 2.5K(2560 x 1600) with 60Hz refresh rate for eDP, and 4K(3840 x 2160) with 60Hz refresh rate for HDMI.
eDP + DP
You can configure the eDP + DP combination with:
genio-flash -i rity-demo-image --load-dtbo display-edpdp.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-edpdp.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if both eDP and DP ports have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 2
count_encoders : 2
count_crtcs : 2
count_fbs : 0
Connector: eDP-1
id : 32
encoder id : 31
conn : connected
size : 340x190 (mm)
count_modes : 1
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "1920x1080" 1920x1080 60
Connector: DP-1
id : 34
encoder id : 33
conn : connected
size : 600x340 (mm)
count_modes : 33
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 33
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 60
...
The associated display data pipeline can process up to 2.5K(2560 x 1600) with 60Hz refresh rate for eDP, and 4K(3840 x 2160) with 60Hz refresh rate for DP.
HDMI + DP
To enable HDMI + DP, load the dtbo file display-hdmidp.dtbo during flashing process:
genio-flash -i rity-demo-image --load-dtbo display-hdmidp.dtbo
If you don’t want to re-flash the entire root file system, you can simply update the overlay configuration with:
genio-flash -i rity-demo-image --load-dtbo display-hdmidp.dtbo kernel mmc0boot1
After boot into the console you can use modeprint mediatek command to check if both HDMI and DP ports have been properly configured:
root@genio-700-evk:~# modeprint mediatek
Starting test
Resources
count_connectors : 2
count_encoders : 2
count_crtcs : 2
count_fbs : 0
Connector: HDMI-A-1
id : 32
encoder id : 31
conn : connected
size : 600x340 (mm)
count_modes : 33
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 31
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 60
...
Connector: DP-1
id : 34
encoder id : 33
conn : connected
size : 600x340 (mm)
count_modes : 33
count_props : 5
props : 1 2 5 6 4
count_encoders : 1
encoders : 33
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 60
...
Note
Due to the limitation of display data pipelines, the associated display data pipeline is limited to 4K(3840 x 2160) with 30Hz refresh rate for HDMI, while 4K(3840 x 2160) with 60Hz refresh rate for DP.
Hardware Setup for eDP
The prebuilt rity-demo-image supports AUO G156HAN03 panel with a eDP cable, as shown below:
Please always use this associated cable to connect to the panel. Connect either side to the Genio 700-EVK board and to the panel, as shown below:
Hardware Setup for DSI0 to LVDS
The prebuilt rity-demo-image supports DSI0 to IT6122 Converter Daughter Board to KOE TX18D204VM0BAA panel.
Note
The IT6122 Converter Daughter Board doest not come with the Genio 700-EVK set. Please contact MTK CPM to obtain one.
An example of the daughter board is shown below:
To install the daughter board, turn both the EVK and the daughter board to the back side, then replace the pre-connected DSI panel LCM0 and CTP0 cables with those on the daughter board.
Turn both the EVK and the daughter board to the front side, then connect the LVDS cable to the daughter board.
A complete setup example is provided below. Note that the DSI panel in the example is not connected to the EVK.
