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i.MX6DL LVDS clock issue

Question asked by Jordan Wolters on Apr 26, 2019
Latest reply on May 17, 2019 by Jordan Wolters

Hello,

 

I'm trying to connect a 10.3 LVDS display with 1920x720 resolution. Unfortunately the display stays black. When measuring the display clock it doesn's goes higher then 50mhz instead of configured 89mhz.

 

I Modified the Device Tree Files like this:

&clks {
     fsl,ldb-di0-parent = <&clks IMX6QDL_CLK_PLL2_PFD0_352M>;
     fsl,ldb-di1-parent = <&clks IMX6QDL_CLK_PLL2_PFD0_352M>;
};
&ldb {
status = "okay";
lvds-channel@0 {
reg = <0>;
fsl,data-mapping = "spwg";
fsl,data-width = <24>;
status = "okay"; primary;
display-timings {
native-mode = <&timing0>;
timing0: 1920x720 {
clock-frequency = <89000000>;
hactive = <1920>;
vactive = <720>;
hback-porch = <0>;
hfront-porch = <0>;
vback-porch = <0>;
vfront-porch = <0>;
hsync-len = <112>;
vsync-len = <10>;
pixelclk-active = <0>;
}; }; }; };

Thanks in advance,

Jordan

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