DART-6UL/VAR-SOM-MX7 Display: Difference between revisions
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= LVDS boot arguments = | = LVDS boot arguments = | ||
== | == Introduction == | ||
The i.MX6UL has an RGB controller. We added SN75LVDS83B RGB to LVDS bridge on the custom board. | |||
== Switching to LVDS1 as main display == | == Switching to LVDS1 as main display == | ||
Revision as of 10:08, 28 December 2015
DART-6UL- LVDS
LVDS boot arguments
Introduction
The i.MX6UL has an RGB controller. We added SN75LVDS83B RGB to LVDS bridge on the custom board.
Switching to LVDS1 as main display
Switching to LVDS1 display requires changing the "primary" of the lvds section flag in the device tree. Setting display to be LVDS1 by default: edit arch/arm/boot/dts/imx6qdl-var-som.dtsi and set section of the lvds1. When you set the "primary" property to the LVDS1 struct, make sure you remove it from the LVDS0 struct
- lvds-channel@1 {
- fsl,data-mapping = "spwg";
- fsl,data-width = <18>;
- crtc = "ipu1-di1";
- primary;
- fsl,data-mapping = "spwg";
- status = "okay";
- display-timings {
- native-mode = <&timing1>;
- timing1: hsd100pxn1 {
- clock-frequency = <35714000>;
- hactive = <800>;
- vactive = <480>;
- hback-porch = <28>;
- hfront-porch = <17>;
- vback-porch = <13>;
- vfront-porch = <20>;
- hsync-len = <20>;
- vsync-len = <13>;
- clock-frequency = <35714000>;
- };
- native-mode = <&timing1>;
- };
- display-timings {
- };
Please take a look on the wiki section for kernel out of tree to see how to compile the device tree.