I did not copy these values. All these are as they came by default in that example. Setup is like following: /** * @brief NT35510_480X800 Timing parameters for Portrait orientation mode */ #define NT35510_480X800_HSYNC ((uint16_t)2)...

@Richard-CRT wrote:certainly the OTM8009A has much lower porch values than the NT35510And what is strange, Linux driver for the same display shows ten times smaller values for vertical axis:static const struct nt35510_config nt35510_frida_frd400b2502...

You are right, the issue is located but I can't see any option not for chip nor for DSI to change. That display chip (NT35510) requires only 3 registers to be updated (MADCTL, CASET and RASET; or even one if the latter two are equal) to change orient...

Thanks. Tried the pattern generator and ended up with the same thing. So testing LTDC etc is pointless.As @Richard-CRT mentioned, the display "is not adapted for landscape mode" (but come on, the same display is used with at least THREE boards and th...

Conducted some experiments and couldn't find satisfying results. It's possible to kick out the diagonal tear line off the screen by significantly increasing Vertical back porch (150 -> 900) but picture becomes flickering.Also you can change a refresh...