How to port the LCD initial code on VIM3 and enable DSC

VIM3
1

Which system do you use? Android, Ubuntu, OOWOW or others?

Android

Which version of system do you use? Please provide the version of the system here:

Khadas official image ( Android 9)

Please describe your issue below:

I’ve successfully ported the LCD initial code for IL79451 IC, but I want to boost the frame rate.
Does the Khadas official BSP support DSC mode, and if so, how do I enable or use it?
Is there any instruction or gulidline?
thx~

2

Hello, do you want to increase the frame rate of your LCD? Is the interface MIPI

3

Hi xiong.zhang,

Yes, I want to increase the frame rate of our LCD, and the interface is MIPI.

thx for your replies

4

Modify the following parameter based on your LCD specifications

image
image1430×1123 108 KB

pixel_clk:
It needs to be configured according to actual needs. The calculation method of pixelclk: pixel_clk = h_period * v_period *
frame_rate

5

Hi xiong.zhang,

Is there an upper limit for the pixel_clk?
If I set a pixel_clk that exceeds this limit, is there have MIPI DSC mode for compression?

6

Your frequency cannot exceed the frequency of the LCD screen specifications

7

Hi xiong.zhang,

I’m sorry if I wasn’t clear before. My Display Driver IC’s initial code already has DSC (Display Stream Compression) mode enabled. How can I actually activate DSC mode in the VIM3 BSP source code during the porting process?
thx~