I am trying to add a 1920 x 1080 LVDS display, using both LVDS channels, on a i.MX6 SOM. I have been unable to find a guide or reference that explains how to use the parameters in the display data sheet in order to set up the timing parameters for dual channel LVDS. The display is at 960 x 1080 resolution right now.
Display model: AUO-P320HVN03 (Data sheet attached)
My device tree is set up as follows:
&mxcfb1 {
interface_pix_fmt = "RGB24";
compatible = "fsl,mxc_sdc_fb";
};
&ldb {
status = "okay";
split-mode;
lvds-channel@0 {
fsl,data-mapping = "spwg";
fsl,data-width = <24>;
primary;
status = "okay";
display-timings {
timing01: AUO-P320HVN03 {
clock-frequency = <74250000>;
hactive = <960>;
hsync-len = <140>;
hback-porch = <0>;
hfront-porch = <0>;
vactive = <1080>;
vsync-len = <45>;
vback-porch = <0>;
vfront-porch = <0>;
}; }; };
lvds-channel@1 {
fsl,data-mapping = "spwg";
fsl,data-width = <24>;
primary;
status = "okay";
display-timings {
timing02: AUO-P320HVN03 {
clock-frequency = <74250000>;
hactive = <960>;
hsync-len = <140>;
hback-porch = <0>;
hfront-porch = <0>;
vactive = <1080>;
vsync-len = <45>;
vback-porch = <0>;
vfront-porch = <0>;
}; }; };
};
Hi Chris
dts example with "split-mode" can be found on
linux-imx6/imx6qdl-eo.dtsi at boundary-imx_4.9.x_2.0.0_ga · boundarydevices/linux-imx6 · GitHub
960 x 1080 resolution right now seems due to record "hactive = <960>".
For understanding how it works may be useful to check
https://community.nxp.com/thread/320994
Best regards
igor
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