Solve the problem of incomplete display around LCD display of rk3128 projector

You need to add attributes

persist.sys.overscan.main=overscan 100,100,100,100

Pay attention to adjusting the screen parameters

/*
 * RockChip. 39720A-LVDS-1280x720 FOR rk3128-86V
 *
 */

/ {

        disp_timings: display-timings {
                native-mode = <&timing0>;
            timing0: timing0 {
                screen-type = <SCREEN_LVDS>;
                lvds-format = <LVDS_8BIT_1>;
                out-face    = <OUT_P888>;
                /* Min   Typ   Max Unit
                 * Clock Frequency fclk  44.9  51.2  63 MHz
                 */
                clock-frequency = <60000000>;
                hactive = <1280>;              /* Horizontal display area thd 1024       DCLK             */
                vactive = <720>;              /* Vertical display area tvd   600         H