OSD3358-512M-BSM + LCD (RGB interface)

[Andrzej K]

hello,

I am trying to connect lcd display with RGB interface (no HDMI) to

OSD3358-SM-RED Schematics PDF

There will be no HDMI in the target pcb ..

After connecting to LCD_gpio, I get a picture but with the wrong margins.

Can I find an instruction somewhere what should I do in this situation?
I didn’t realize it would be so hard.

I will appreciate any help

[Neeraj Dantu]

Andrzej,

Please take a look at fbset command(https://linux.die.net/man/8/fbset). This can help you set margins and other display parameters at runtime.

Since all LCD screens are a little different, the  configuration in which the board is booting might not be optimal for your screen. According to https://software-dl.ti.com/processor-sdk-linux/esd/docs/latest/linux/Foundational_Components/Kernel/Kernel_Drivers/Display/LCDC.html, the driver used is /drivers/video/fbdev/da8xx-fb.c. You can also change the LCD initialization parameters here in the driver: https://elixir.bootlin.com/linux/latest/source/drivers/video/fbdev/da8xx-fb.c#L187.

Best,

Neeraj

[BriggTrim]

Hi…I have designed a board utilizing TFT LCD 7inch with 24 bit RGB , yet presently client required me change TFT LCD 24 bit RGB to TFT LCD utilizing MIPI/DSI interface.

I had discover answer for this thing by utilizing SN75LVDS83, I had custom board dependent on “Tida 010013” board.

Yet, I don’t know my plan is right or mistaken.

So anybody can offer me some guidance for my custom board ?

[Neeraj Dantu]

BiggTrim,

TIDA-010013 looks like a reference design to convert RGB to LVDS displays. Please see https://focuslcds.com/the-mipi-and-lvds-display-interfaces/ for an understanding of the difference between LVDS and DSI interfaces. If you need RGB to DSI interfacing, https://www.mouser.com/new/toshiba-semiconductors/toshiba-tc358778xbg-dsi/ looks like a solution. We have not verified whether this will work with AM335x.

Best,

Neeraj

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