AM3358: TILCDC, clock setting from dtsi doesn't effect clock speed

Gokhan Polat

Prodigy 80 points

Part Number: AM3358

Tool/software:

Hi,

I am using "Linux am335x-evm 5.10.168-rt83+" kernel.

My device tree as below:

i set my defconfig:

When i call module i can take visual on my custom LCD, image shifting.

I tried to change clock speed, hsync, vsync value from devicetree but it doesn't effect anything. (I measure the clock speed via osciloscope. It is not changing even i enter different clock speed from devicetree )

4 days ago

0 Krunal Bhargav34 4 days ago

TI__Mastermind 41005 points

Hi,

What does kmsprint show?

Regards,
Krunal

0 Gokhan Polat 3 days ago in reply to Krunal Bhargav34

Prodigy 80 points

0 Krunal Bhargav34 3 days ago in reply to Gokhan Polat

TI__Mastermind 41005 points

Hi,

Based on the above information, does it reflect what you are programming?

Regards,
Krunal

0 Gokhan Polat 2 days ago in reply to Krunal Bhargav34

Prodigy 80 points

my config says: 3Mhz, clock frequency shows 12Mhz (as i mentioned in title)

0 Krunal Bhargav34 1 day ago in reply to Gokhan Polat

TI__Mastermind 41005 points

Hi,

Is it possible for you to define the timing in panel-simple? Not sure why kmstest shows lvds when it's a DPI panel.

Regards,
Krunal

0 Gokhan Polat 1 day ago in reply to Krunal Bhargav34

Prodigy 80 points

Could you send me, what is needed for defconfig and how should i connect it via devicetree? (Do i need edit kernel file which includes panel parameters? (I have tried before, but i got strange errors, i so gave up) (By the way i have already read documantation about LCDC)