DART-MX8M-MINI Display: Difference between revisions
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= Introduction = | = Introduction = | ||
== MIPI-DSI and LVDS == | == MIPI-DSI and LVDS == | ||
i.MX8M | i.MX8M Mini SoC supports MIPI-DSI interface. DART-MX8M-MINI can be optionally equipped with SN65DSI84 MIPI-DSI to LVDS bridge.<br> | ||
DART-MX8M-MINI carrier board comes with LVDS connectors, so you can easily connect LVDS display.<br> | DART-MX8M-MINI carrier board comes with LVDS connectors, so you can easily connect LVDS display.<br> | ||
Connecting MIPI-DSI display to DART-MX8M-MINI carrier board requires designing a custom connector.<br> | Connecting MIPI-DSI display to DART-MX8M-MINI carrier board requires designing a custom connector.<br> | ||
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</pre> | </pre> | ||
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 and rebuild the DTB file. | 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. | ||
Revision as of 09:34, 28 February 2019
Introduction
MIPI-DSI and LVDS
i.MX8M Mini SoC supports MIPI-DSI interface. DART-MX8M-MINI can be optionally equipped with SN65DSI84 MIPI-DSI to LVDS bridge.
DART-MX8M-MINI carrier board comes with LVDS connectors, so you can easily connect LVDS display.
Connecting MIPI-DSI display to DART-MX8M-MINI carrier board requires designing a custom connector.
Adding custom LVDS panel
DART-MX8M-MINI evaluation kit comes with 800x480 LCD panel. DART-MX8M-MINI 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/fsl-imx8mm-var-dart.dts 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.