DART-MX8M-MINI Display: Difference between revisions
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<!-- Set release according to "release" parameter in URL and use | <!-- Set release according to "release" parameter in URL and use RELEASE_SUMO_V1.0_DART-MX8M-MINI as default | ||
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--> {{#lst:Yocto_Platform_Customization|{{#var:RELEASE_PARAM| | --> {{#lst:Yocto_Platform_Customization|{{#var:RELEASE_PARAM|RELEASE_SUMO_V1.0_DART-MX8M-MINI}}}} <!-- | ||
--> {{PageHeader| | --> {{PageHeader|{{#var:HARDWARE_NAME}} Display}} {{DocImage|category1=Yocto|category2={{#var:HARDWARE_NAME}}}}__toc__ | ||
= Introduction = | = Introduction = | ||
== MIPI-DSI and LVDS == | == MIPI-DSI and LVDS == | ||
{{#var:HARDWARE_NAME}} SoC supports MIPI-DSI interface. {{#var:HARDWARE_NAME}} can be optionally equipped with SN65DSI84 MIPI-DSI to LVDS bridge.<br> | |||
{{#var:HARDWARE_NAME}} carrier board comes with LVDS connectors, so you can easily connect LVDS display.<br> | |||
Connecting MIPI-DSI display to | Connecting MIPI-DSI display to {{#var:HARDWARE_NAME}} carrier board requires designing a custom connector.<br> | ||
= Adding custom LVDS panel = | = Adding custom LVDS panel = | ||
{{#var:HARDWARE_NAME}} evaluation kit comes with 800x480 LCD panel. {{#var:HARDWARE_NAME}} DTS file was created with this panel in mind. | |||
To support your custom LVDS panel, you should make several modifications | To support your custom LVDS panel, you should make several modifications | ||
== Referencing custom panel in the DTS file == | == Referencing custom panel in the DTS file == | ||
The following code references Variscite panel in arch/arm64/boot/dts/freescale/ | The following code references Variscite panel in arch/arm64/boot/dts/freescale/{{#var:DEFAULT_DTB}} under kernel source tree | ||
<pre> | <pre> | ||
Revision as of 10:28, 16 January 2020
Display
Introduction
MIPI-DSI and LVDS
SoC supports MIPI-DSI interface. can be optionally equipped with SN65DSI84 MIPI-DSI to LVDS bridge.
carrier board comes with LVDS connectors, so you can easily connect LVDS display.
Connecting MIPI-DSI display to carrier board requires designing a custom connector.
Adding custom LVDS panel
evaluation kit comes with 800x480 LCD panel. DTS file was created with this panel in mind.
To support your custom LVDS panel, you should make several modifications
Referencing custom panel in the DTS file
The following code references Variscite panel in arch/arm64/boot/dts/freescale/ under kernel source tree
dsi_lvds_bridge: sn65dsi84@2c {
compatible = "ti,sn65dsi83";
reg = <0x2c>;
ti,dsi-lanes = <1>;
ti,lvds-format = <1>;
ti,lvds-bpp = <24>;
ti,width-mm = <154>;
ti,height-mm = <87>;
enable-gpios = <&gpio2 11 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_lvds>;
status = "okay";
display-timings {
lvds {
clock-frequency = <33000000>;
hactive = <800>;
vactive = <480>;
hback-porch = <40>;
hfront-porch = <40>;
vback-porch = <29>;
vfront-porch = <13>;
hsync-len = <48>;
vsync-len = <3>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <0>;
};
};
...
};
You should modify "ti,dsi-lanes", "ti,lvds-format" "ti,lvds-bpp", "ti,width-mm", "ti,height-mm" and "display-timings" properties to match your panel specification and rebuild the DTB file.