Re: [PATCH 4/5] media: dt-bindings: add NXP i.MX95 compatible string

[Frank Li]

On Wed, Apr 15, 2026 at 09:21:44AM +0000, G.N. Zhou (OSS) wrote:
> Hi Krzysztof Kozlowski
>
> Thanks for your review.
>
> > -----Original Message-----
> > From: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> > Sent: Wednesday, April 15, 2026 4:10 PM
> > To: G.N. Zhou (OSS) <guoniu.zhou@xxxxxxxxxxx>
> > Cc: Michael Riesch <michael.riesch@xxxxxxxxxxxxx>; Mauro Carvalho Chehab
> > <mchehab@xxxxxxxxxx>; Rob Herring <robh@xxxxxxxxxx>; Krzysztof Kozlowski
> > <krzk+dt@xxxxxxxxxx>; Conor Dooley <conor+dt@xxxxxxxxxx>; Heiko Stuebner
> > <heiko@xxxxxxxxx>; Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>;
> > Frank Li <frank.li@xxxxxxx>; linux-media@xxxxxxxxxxxxxxx; linux-
> > kernel@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; imx@xxxxxxxxxxxxxxx; linux-
> > arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-rockchip@xxxxxxxxxxxxxxxxxxx
> > Subject: Re: [PATCH 4/5] media: dt-bindings: add NXP i.MX95 compatible string
> >
> > On Wed, Apr 15, 2026 at 11:46:55AM +0800, Guoniu Zhou wrote:
> > > The i.MX95 CSI-2 controller is nearly identical to i.MX93, with the
> > > only difference being the use of IDI (Image Data Interface) instead of
> > > IPI (Image Pixel Interface). The binding constraints are otherwise the
> > > same.
> >
> > Nearly identical with some difference really, really suggests they are
> > compatible. Express compatibility or explain why they are not compatible
> > (difference between IDI and IPI unfortunately does not help me).
>
> You're right that they are very similar. The key difference between IDI and IPI
> is in the software interface:
>
> - IPI (Image Pixel Interface) on i.MX93 requires software configuration through
>   a set of registers to enable the interface and configure data routing.
>
> - IDI (Image Data Interface) on i.MX95 is software transparent - it requires no
>   register configuration and the data routing is handled automatically by hardware.
>
> Because of this difference in register layout and initialization requirements,
> they cannot share the same compatible string. The driver needs to know which
> interface is present

Just include these key information into commit message to do judgement
it is not compatible with imx93.

Frank


>
> >
> > Best regards,
> > Krzysztof
>