how to adjust the contrast saturation hue and colour temperature of display panel on imx6dlsabresd

[liangyan]

1. i want to adjust display contrast saturation hue and colour temperature on imx6dlsabresd?

2. i use yocto fsl-yocto-L4.9.11_1.0.0.

3. i use lvds on /dev/fb0?

could someone can help me ,thk

[lukeh]

Did you (or anyone else reading this) find a way to adjust the contrast on the i.MX6? We are trying to adjust the contrast on a new display we are using but haven't had any luck.

Nitrogen6 SOM V2 from Boundary Devices, iMX6Q
Linux 4.14.98-2.0.0 - built through Yocto

We also tried the imx_csc.c example and are able to adjust the Gamma using the MXCFB_SET_GAMMA command, and it appears that it should be able to adjust the display Contrast - color temperature through CSC tables, but the ioctl with the MXCFB_CSC_UPDATE command doesn't appear to affect the display.

Thanks!

[b36401]

Such options like contrast and saturation adjustment can be done with color conversion feature of IPU.

[liangyan]

Can you give me an example， i download imx_csc.c tools ,but it does  not work on my board.