OK3568 4.19.206 Display Color Temperature Adjustment

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Copyright

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Revision History

Date	Version	Revision History
04/08/2022	V1.0	Initial Version

Display Color Temperature Adjustment

Modify the default values in the driver file kernel/drivers/gpu/drm/rockchip/rockchip_drm_drv.c:

hue corresponds to color tone

saturation corresponds to saturation

contrast corresponds to contrast

brightness corresponds to brightness

You can use the modetest command in the terminal to test appropriate values:

Check the display ID

For example, if an LVDS display is connected, its ID may be 152.

Adjust parameters via command

modetest -M rockchip -a -w 152:hue:0

modetest -M rockchip -a -w 152:hue:100

modetest -M rockchip -a -w 152:hue:50

Use the following commands to test and observe changes in screen color temperature:

Note:

hue corresponds to color tone；

saturation corresponds to saturation；

contrast corresponds to contrast；

brightness corresponds to brightness.