Re: [PATCH 1/1] ARM: dts: imx6sx: remove fallback compatible string fsl,imx28-lcdif

[Frank Li]

On Thu, Mar 05, 2026 at 10:34:18PM +0100, Krzysztof Kozlowski wrote:
> On 05/03/2026 22:23, Frank Li wrote:
> > i.MX6SX uses the v6 LCDIF controller, while i.MX28 uses the older v4
> > version. The driver has supported the "fsl,imx6sx-lcdif" compatible string
> > since the initial commit:
> >
> >    commit 45d59d704080 ("drm: Add new driver for MXSFB controller")
> >
> > Therefore the fallback compatible string "fsl,imx28-lcdif" is not required
> > and can be removed.
>
> It is required - you are changing the ABI and possibly impacting other
> users without valid reason ("not required and can be removed" is not a
> reason).

In https://lore.kernel.org/imx/42eb2d42-47b0-46b6-92e9-c59473113c2d@xxxxxxx/

other known user barebox/uboot already fix it.

https://lore.barebox.org/barebox/20251107210033.2229781-3-a.fatoum@xxxxxxxxxxx/T/#u
https://git.pengutronix.de/cgit/barebox/commit/?id=c99b937f3a31

Frank

>
> Best regards,
> Krzysztof