There is a delay of approximately 250 ms between the activation of the backlight via an I2C command (Backlight
control: 0x95) and the change of BKLTEN output.
You can see in the screenshot below, the delay measured between the start of the activation of the PWM and the activation of the BKLTEN output:
Despite a configuration of the different timings (T12, T2 and T4), we cannot reduce this delay.
Thanks for your help!