On 2/14/26 11:21 PM, Archit Anant wrote: > 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
If two different panels are not 100% compatible with each other, they should not have the same compatible string. It seems like it would be much more efficient to fix the existing devicetree/driver if needed rather than writing an entire new driver.
