[PATCH] drm/stm: Fix resolution bitmasks

[Marek Vasut]

On 10/14/22 15:42, Yannick FERTRE wrote:
> Hi Marek,

Hello Yannick,

> The genmask of regsiter SSCR, BPCR & others were setted accordly to the 
> chipset stm32f4.

So that means:
F4 -> 2048x2048 framebuffer
H7/MP1 -> 4096x4096 framebuffer
?

We should then also update STM_MAX_FB_WIDTH/STM_MAX_FB_HEIGHT per SoC type ?

> You can see more details on page 493 of reference manual RM0090:
> 
> https://www.st.com/resource/en/reference_manual/DM00031020-.pdf
> 
> With future hardware, all of these registers will aligned on 16bits.
> 
> I would like to know if you use a display which resolution exceed 2048.

Not at all, 480x640 .

The display is just flaky and I'm trying to figure out what's wrong with 
it, so I'm checking all over the place and noticed this discrepancy.