Genio 1200-EVK

This page provides board-specific information on the display interfaces of the Genio 1200-EVK. For common display and compositor information, please visit the Display page.

Display Interfaces on Genio 1200-EVK

IoT Yocto supports five display interfaces on Genio 1200-EVK:

• DSI0

• HDMI TX

• DisplayPort(DP) through USB Type-C port

• Embedded Display Port(eDP) with eDP Panel INNOLUX HK173VB-01B

• LVDS with LVDS Panel KOE TX18D204VM0BAA

The board can be used headless or in single, dual and triple display configurations.

The display system has three different pipelines - VDOSYS0-main, VDOSYS0-sub, and VDOSYS1 - that can be used for any of the triple display combinations. These pipelines are abstracted as different crtc in the DRM framework.

VDOSYS0-main and VDOSYS0-sub provide individual 3840x2160, 30Hz refresh rate and can be merged into one 3840x2160, 60Hz refresh rate display pipeline. VDOSYS1 provides 3840x2160, 60Hz refresh rate.

In the case of dual display combinations, VDOSYS0-main and VDOSYS0-sub are merged into one pipeline, together with VDOSYS1 to connect two connectors. In the case of triple display combinations, VDOSYS0-main, VDOSYS0-sub, and VDOSYS1 are independent pipelines to connect three connectors.

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.

G1200 EVK Display Ports

top view without DSI panel installed (showing DPoC, eDP, HDMI TX, HDMI RX)	side view with DSI panel installed	bottom view without DSI panel installed (showing LVDS, 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 eDP 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 overlays and description link of each dtbo.

Default Display

dtbo	Description
No need dtbo	DSI0 + HDMI

Headless dtbo

dtbo	Description
display-headless.dtbo	Headless

Single Display Device Tree Overlays

dtbo	Description
display-dsi.dtbo	DSI0
display-edp.dtbo	eDP
display-edp2lvds.dtbo	eDP to LVDS
display-hdmi.dtbo	HDMI
display-dp.dtbo	DP

Dual Display Device Tree Overlays

dtbo	Description
display-dsiedp.dtbo	DSI0 + eDP
display-dsilvds.dtbo	DSI0 + LVDS
display-dsidp.dtbo	DSI0 + DP
display-edphdmi.dtbo	eDP + HDMI
display-edpdp.dtbo	eDP + DP
display-lvdshdmi.dtbo	LVDS + HDMI
display-lvdsdp.dtbo	LVDS + DP
display-hdmidp.dtbo	HDMI + DP

Triple Display Device Tree Overlays

dtbo	Description
display-dsiedphdmi.dtbo	DSI0 + eDP + HDMI
display-dsiedpdp.dtbo	DSI0 + eDP + DP
display-dsilvdshdmi.dtbo	DSI0 + LVDS + HDMI
display-dsilvdsdp.dtbo	DSI0 + LVDS + DP
display-dsihdmidp.dtbo	DSI0 + HDMI + DP
display-edphdmidp.dtbo	eDP + HDMI + DP
display-lvdshdmidp.dtbo	LVDS + HDMI + DP

DSI0 + HDMI

DSI0 + HDMI are the default dual display interfaces for the prebuilt rity-demo-image. A DSI panel is pre-connected to G1200 EVK.

To restore the device tree setting back to the default device tree of the Genio 1200-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-1200-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-1200-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-1200-evk:~# modeprint mediatek
Starting test
Resources

count_connectors : 1
count_encoders   : 1
count_crtcs      : 3
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.

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-1200-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           : 380x210 (mm)
        count_modes    : 1
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 31
Mode: "3840x2160" 3840x2160 60

The associated display data pipeline can process up to 4K(3840 x 2160) with 60Hz refresh rate for eDP.

eDP to LVDS

To enable eDP to LVDS as the only display connector, load the overlay file display-edp2lvds.dtbo during flashing process:

genio-flash -i rity-demo-image --load-dtbo display-edp2lvds.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

Note

• Since LVDS shares the same data lanes with eDP, the connector seen in modeprint is eDP-1 for LVDS

• For other LVDS usage in multi display device tree overlays, e.g. DSI + LVDS, the file name of the overlay should look like display-dsiedp2lvds.dtbo, but to keep it short, we strip edp2 from the file name, thus it becomes display-dsilvds.dtbo. The same rule applies to other overlay files supporting multi-display.

After boot into the console you can use modeprint mediatek command to check if LVDS (in eDP-1) port have been properly configured:

root@genio-1200-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           : 170x100 (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.

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-1200-evk:~# modeprint mediatek
Starting test
Resources

count_connectors : 1
count_encoders   : 1
count_crtcs      : 3
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-1200-evk:~# modeprint mediatek
Starting test
Resources

count_connectors : 1
count_encoders   : 1
count_crtcs      : 3
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

To enable DSI0 + eDP, load the overlay file display-dsiedp.dtbo during flashing process:

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-1200-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           : 380x210 (mm)
        count_modes    : 1
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
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 eDP

DSI0 + LVDS

To enable DSI0 + LVDS, load the overlay file display-dsilvds.dtbo during flashing process:

genio-flash -i rity-demo-image --load-dtbo display-dsilvds.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-dsilvds.dtbo kernel mmc0boot1

After boot into the console you can use modeprint mediatek command to check if both DSI0 and LVDS (in eDP-1) ports have been properly configured:

root@genio-1200-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           : 170x100 (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 FHD(1920 x 1080) with 60Hz refresh rate for LVDS

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-1200-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    : 26
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 50
...

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

eDP + HDMI

To enable Embedded DP + INNOLUX HK173VB-01B panel + HDMI, load the overlay file display-edphdmi.dtbo during flashing process:

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-1200-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           : 380x210 (mm)
        count_modes    : 1
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 31
Mode: "3840x2160" 3840x2160 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 4K(3840 x 2160) with 60Hz refresh rate for eDP, and 4K(3840 x 2160) with 60Hz refresh rate for HDMI

eDP + DP

To enable eDP + DP, load the overlay file display-edpdp.dtbo during flashing process:

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-1200-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           : 380x210 (mm)
        count_modes    : 1
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 31
Mode: "3840x2160" 3840x2160 60
Connector: DP-1
        id             : 34
        encoder id     : 33
        conn           : connected
        size           : 600x340 (mm)
        count_modes    : 26
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 50
...

The associated display data pipeline can process up to 4K(3840 x 2160) with 60Hz refresh rate for eDP, and 4K(3840 x 2160) with 60Hz refresh rate for DP

LVDS + HDMI

To enable LVDS + KOE TX18D204VM0BAA panel + HDMI, load the overlay 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 eDP-1) and HDMI ports have been properly configured:

root@genio-1200-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           : 170x100 (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 FHD(1920 x 1080) 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 overlay 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 eDP-1) and DP ports have been properly configured:

root@genio-1200-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           : 170x100 (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    : 26
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 50
...

The associated display data pipeline can process up to FHD(1920 x 1080) with 60Hz refresh rate for LVDS, 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-1200-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    : 26
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 50
...

The associated display data pipeline can process up to 4K(3840 x 2160) with 60Hz refresh rate for HDMI, and 4K(3840 x 2160) with 60Hz refresh rate for DP

DSI0 + eDP + HDMI

To enable DSI0 + eDP + HDMI, load the overlay file display-dsiedphdmi.dtbo during flashing process:

genio-flash -i rity-demo-image --load-dtbo display-dsiedphdmi.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-dsiedphdmi.dtbo kernel mmc0boot1

After boot into the console you can use modeprint mediatek command to check if DSI0, eDP and HDMI ports have been properly configured:

root@genio-1200-evk:~# modeprint mediatek
Starting test
Resources

count_connectors : 3
count_encoders   : 3
count_crtcs      : 3
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           : 380x210 (mm)
        count_modes    : 1
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
Mode: "3840x2160" 3840x2160 60
Connector: HDMI-A-1
        id             : 36
        encoder id     : 35
        conn           : connected
        size           : 930x390 (mm)
        count_modes    : 30
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 35
Mode: "3440x1440" 3440x1440 72
Mode: "3840x2160" 3840x2160 60
...

The associated display data pipeline can process up to 2.5K(2560 x 1600) with 60Hz refresh rate for DSI0, 4K(3840 x 2160) with 30Hz refresh rate for eDP, and 4K(3840 x 2160) with 60Hz refresh rate for HDMI.

DSI0 + eDP + DP

To enable DSI0 + eDP + DP, load the overlay file display-dsiedpdp.dtbo during flashing process:

genio-flash -i rity-demo-image --load-dtbo display-dsiedpdp.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-dsiedpdp.dtbo kernel mmc0boot1

After boot into the console you can use modeprint mediatek command to check if DSI0, eDP and DP ports have been properly configured:

root@genio-1200-evk:~# modeprint mediatek
Starting test
Resources

count_connectors : 3
count_encoders   : 3
count_crtcs      : 3
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           : 380x210 (mm)
        count_modes    : 1
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
Mode: "3840x2160" 3840x2160 60
Connector: DP-1
        id             : 36
        encoder id     : 35
        conn           : connected
        size           : 700x390 (mm)
        count_modes    : 27
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 35
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 DSI0, 4K(3840 x 2160) with 30Hz refresh rate for eDP, and 4K(3840 x 2160) with 60Hz refresh rate for DP.

DSI0 + LVDS + HDMI

To enable DSI0 + LVDS + HDMI, load the overlay file display-dsilvdshdmi.dtbo during flashing process:

genio-flash -i rity-demo-image --load-dtbo display-dsilvdshdmi.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-dsilvdshdmi.dtbo kernel mmc0boot1

After boot into the console you can use modeprint mediatek command to check if DSI0, LVDS (in eDP-1) and HDMI ports have been properly configured:

root@genio-1200-evk:~# modeprint mediatek
Starting test
Resources

count_connectors : 3
count_encoders   : 3
count_crtcs      : 3
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           : 170x100 (mm)
        count_modes    : 1
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
Mode: "1920x1080" 1920x1080 60
Connector: HDMI-A-1
        id             : 36
        encoder id     : 35
        conn           : connected
        size           : 930x390 (mm)
        count_modes    : 30
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 35
Mode: "3440x1440" 3440x1440 72
Mode: "3840x2160" 3840x2160 60
...

The associated display data pipeline can process up to 2.5K(2560 x 1600) with 60Hz refresh rate for DSI0, FHD(1920 x 1080) with 60Hz refresh rate for LVDS, and 4K(3840 x 2160) with 60Hz refresh rate for HDMI.

DSI0 + LVDS + DP

To enable DSI0 + LVDS + DP, load the overlay file display-dsilvdsdp.dtbo during flashing process:

genio-flash -i rity-demo-image --load-dtbo display-dsilvdsdp.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-dsilvdsdp.dtbo kernel mmc0boot1

After boot into the console you can use modeprint mediatek command to check if DSI0, LVDS (in eDP-1) and DP ports have been properly configured:

root@genio-1200-evk:~# modeprint mediatek
Starting test
Resources

count_connectors : 3
count_encoders   : 3
count_crtcs      : 3
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           : 170x100 (mm)
        count_modes    : 1
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
Mode: "1920x1080" 1920x1080 60
Connector: DP-1
        id             : 36
        encoder id     : 35
        conn           : connected
        size           : 700x390 (mm)
        count_modes    : 27
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 35
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 DSI0, FHD(1920 x 1080) with 60Hz refresh rate for LVDS, and 4K(3840 x 2160) with 60Hz refresh rate for DP.

DSI0 + HDMI + DP

To enable DSI0 + HDMI + DP, load the overlay file display-dsihdmidp.dtbo during flashing process:

genio-flash -i rity-demo-image --load-dtbo display-dsihdmidp.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-dsihdmidp.dtbo kernel mmc0boot1

After boot into the console you can use modeprint mediatek command to check if DSI0, HDMI and DP ports have been properly configured:

root@genio-1200-evk:~# modeprint mediatek
Starting test
Resources

count_connectors : 3
count_encoders   : 3
count_crtcs      : 3
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           : 930x390 (mm)
        count_modes    : 30
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
Mode: "3440x1440" 3440x1440 72
Mode: "3840x2160" 3840x2160 60
...
Connector: DP-1
        id             : 36
        encoder id     : 35
        conn           : connected
        size           : 700x390 (mm)
        count_modes    : 27
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 35
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 DSI0, 4K(3840 x 2160) with 60Hz refresh rate for HDMI, and 4K(3840 x 2160) with 30Hz refresh rate for DP.

eDP + HDMI + DP

To enable eDP + HDMI + DP, load the overlay file display-edphdmidp.dtbo during flashing process:

genio-flash -i rity-demo-image --load-dtbo display-edphdmidp.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-edphdmidp.dtbo kernel mmc0boot1

After boot into the console you can use modeprint mediatek command to check if eDP, HDMI and DP ports have been properly configured:

root@genio-1200-evk:~# modeprint mediatek
Starting test
Resources

count_connectors : 3
count_encoders   : 3
count_crtcs      : 3
count_fbs        : 0

Connector: eDP-1
        id             : 32
        encoder id     : 31
        conn           : connected
        size           : 380x210 (mm)
        count_modes    : 1
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 31
Mode: "3840x2160" 3840x2160 60
Connector: HDMI-A-1
        id             : 34
        encoder id     : 33
        conn           : connected
        size           : 930x390 (mm)
        count_modes    : 30
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
Mode: "3440x1440" 3440x1440 72
Mode: "3840x2160" 3840x2160 60
...
Connector: DP-1
        id             : 36
        encoder id     : 35
        conn           : connected
        size           : 700x390 (mm)
        count_modes    : 27
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 35
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 30
...

The associated display data pipeline can process up to 4K(3840 x 2160) with 30Hz refresh rate for eDP, 4K(3840 x 2160) with 30Hz refresh rate for HDMI, and 4K(3840 x 2160) with 60Hz refresh rate for DP.

LVDS + HDMI + DP

To enable LVDS + HDMI + DP, load the overlay file display-lvdshdmidp.dtbo during flashing process:

genio-flash -i rity-demo-image --load-dtbo display-lvdshdmidp.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-lvdshdmidp.dtbo kernel mmc0boot1

After boot into the console you can use modeprint mediatek command to check if LVDS, HDMI and DP ports have been properly configured:

Starting test
Resources

count_connectors : 3
count_encoders   : 3
count_crtcs      : 3
count_fbs        : 0

Connector: eDP-1
        id             : 32
        encoder id     : 31
        conn           : connected
        size           : 170x100 (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           : 930x390 (mm)
        count_modes    : 30
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 33
Mode: "3440x1440" 3440x1440 72
Mode: "3840x2160" 3840x2160 60
...
Connector: DP-1
        id             : 36
        encoder id     : 35
        conn           : connected
        size           : 700x390 (mm)
        count_modes    : 27
        count_props    : 5
        props          : 1 2 5 6 4
        count_encoders : 1
        encoders       : 35
Mode: "3840x2160" 3840x2160 60
Mode: "3840x2160" 3840x2160 30
...

The associated display data pipeline can process up to FHD(1920 x 10800) with 60Hz refresh rate for LVDS, 4K(3840 x 2160) with 30Hz refresh rate for HDMI, and 4K(3840 x 2160) with 60Hz refresh rate for DP.

Hardware Setup for eDP

The prebuilt rity-demo-image supports INNOLUX HK173VB-01B panel with an eDP cable, as shown below:

Please always use this associated cable to connect to the panel. Connect either side to the Genio 1200-EVK board and to the panel. Make sure to remove the jumper on the Genio 1200-EVK board to enable the eDP path, as shown below:

Hardware Setup for LVDS

The prebuilt rity-demo-image supports KOE TX18D204VM0BAA panel with a LVDS cable, as shown below:

Please always use this associated cable to connect to the panel. Connect either side to the Genio 1200-EVK board and to the panel, as shown below:

Make sure to connect a jumper on the Genio 1200-EVK board to enable LVDS path, as shown below:

Related Kernel Source Files

• The board dts file is located in the kernel path arch/arm64/boot/dts/mediatek/genio-1200-evk.dts.

• The driver for display data path and interfaces are located under the drivers/gpu/drm/mediatek, the same as other DRM drivers.

• The driver for PHY hardware are located under the drivers/phy/mediatek path, such as:

  • drivers/phy/mediatek/phy-mtk-dp.c

  • drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c

• The USB Type-C associated drivers:

  • IT5205 driver are located in drivers/usb/typec/mux/it5205fn.c

  • The MT6360 driver for USB Type-C are located in drivers/usb/typec/tcpm/tcpci_mt6360.c

Please note that the support for MT8390 on IoT Yocto starts from mtk-v5.15 kernel and the Yocto kirkstone branch.

The device tree overlay files are not located in the kernel source. Instead, these overlay files are managed in the Yocto meta layer meta-mediatek-bsp’s kirkstone/recipes-kernel/dtbo/genio-1200-evk directory.