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:

• DSI0

• HDMI

• DisplayPort(DP) through USB Type-C port

• Embedded Display Port(eDP) with eDP Panel AUO G156han03

As of v23.0 release, the DSI1 port (LCM2) is not supported on IoT Yocto.

There are two different underlying display data pipelines, abstracted as different crtc in the DRM framework, and can be used for any of the two connector combinations. Totally six dual display combinations are supported.

Default rity-demo-image enables dual display DSI and HDMI. Other dual display combinations can be enabled by loading the device tree overlay during the flash programming process.

G700 EVK Display Ports

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)

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.

load gpu-mali.dtbo with:

genio-flash -i rity-demo-image --load-dtbo gpu-mali.dtbo

The following configuration examples will all load 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
Mode: "3840x2160" 3840x2160 50
Mode: "3840x2160" 3840x2160 30

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

DSI0 + DP

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

genio-flash -i rity-demo-image --load-dtbo gpu-mali.dtbo --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 gpu-mali.dtbo --load-dtbo display-dp.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
Mode: "3840x2160" 3840x2160 50
Mode: "3840x2160" 3840x2160 30

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

HDMI + DP

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

genio-flash -i rity-demo-image --load-dtbo gpu-mali.dtbo --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 gpu-mali.dtbo --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
Mode: "3840x2160" 3840x2160 50
Mode: "3840x2160" 3840x2160 30
    ......

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
Mode: "3840x2160" 3840x2160 50
Mode: "3840x2160" 3840x2160 30

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

eDP + HDMI

To enable Embedded DP and the AUO G156HAN03 panel, load the overlay file:

genio-flash -i rity-demo-image --load-dtbo gpu-mali.dtbo --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 gpu-mali.dtbo --load-dtbo display-edp.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
Mode: "3840x2160" 3840x2160 30
Mode: "3840x2160" 3840x2160 30

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 gpu-mali.dtbo --load-dtbo display-edp.dtbo --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 gpu-mali.dtbo --load-dtbo display-edp.dtbo --load-dtbo display-dp.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
Mode: "3840x2160" 3840x2160 50
Mode: "3840x2160" 3840x2160 30

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

DSI0 + eDP

You can configure the DSI0 + eDP combination with:

genio-flash -i rity-demo-image --load-dtbo gpu-mali.dtbo --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 gpu-mali.dtbo --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

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:

Related Kernel Source Files

• The board dts file is located in the kernel path arch/arm64/boot/dts/mediatek/genio-700-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-700-evk directory.