It works now but not the backlights.
I have to make the backlight to fixed level to avoid the process delay too much. I was planing to use LCD PWM to control its backlight brightness.
Currently the FPS is very low, around one frame per second, power consume is 200mA.
But this is just the first step. If I am lucky enough and the screen datasheet is showing real parameters, I should get a wonderful result in two or three days 😉