SNVSBY7 March 2021 TPS92390
The BRT_MODE register selects whether the input to the display brightness path is the PWM input pin or DISP_BRT register. PWM input control will be the default setup after power on. The brightness control signal path diagram is shown in Figure 7-9
The display brightness path has sloper function that can be enabled. By default the sloper function is enabled. The sloper and dither function also can be programmable by I2C control. The sloper function is described in Section 126.96.36.199, and the dither function is described in Section 188.8.131.52.