Re: [RFC PATCH] drm/sitronix: add ST7789V panel driver

[Archit Anant]

Hi David,

> Do we actually need a custom driver for these or can we use
> drivers/gpu/drm/tiny/panel-mipi-dbi.c with a firmware file for
> init?

That was my initial thought as well, but looking at the staging driver
(fb_st7789v.c), there is conditional logic in the initialization sequence.

The HSD20_IPS panel requires different PORCTRL (0xB2), GCTRL (0xB7), and
Gamma (0xE0/E1) settings compared to the standard panel. A static
firmware blob via panel-mipi-dbi would not allow selecting between
these configurations based on the compatible string, so a dedicated
driver seemed necessary to preserve this support.

Best regards,
Archit