linux-kernel - Re: [RFC PATCH 7/9] arm64: dts: imx8mm: Add eLCDIF node support

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Message-ID: <CAMty3ZCR7A76UfN98ffawET20D+nN5=EMmzosXu1G2vaNtBdfw@mail.gmail.com>
Date:   Tue, 22 Jun 2021 19:29:39 +0530
From:   Jagan Teki <jagan@...rulasolutions.com>
To:     Adam Ford <aford173@...il.com>
Cc:     Peng Fan <peng.fan@....com>, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Tomasz Figa <t.figa@...sung.com>,
        Fancy Fang <chen.fang@....com>,
        devicetree <devicetree@...r.kernel.org>,
        Francis Laniel <francis.laniel@...rulasolutions.com>,
        Matteo Lisi <matteo.lisi@...icam.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Rob Herring <robh+dt@...nel.org>,
        NXP Linux Team <linux-imx@....com>,
        Milco Pratesi <milco.pratesi@...icam.com>,
        Anthony Brandon <anthony@...rulasolutions.com>,
        linux-phy@...ts.infradead.org,
        linux-amarula <linux-amarula@...rulasolutions.com>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC PATCH 7/9] arm64: dts: imx8mm: Add eLCDIF node support

On Tue, Jun 22, 2021 at 8:39 AM Adam Ford <aford173@...il.com> wrote:
>
> On Mon, Jun 21, 2021 at 2:25 AM Jagan Teki <jagan@...rulasolutions.com> wrote:
> >
> > Add eLCDIF controller node for i.MX8MM.
> >
> > Cc: Rob Herring <robh+dt@...nel.org>
> > Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
> > ---
> >  arch/arm64/boot/dts/freescale/imx8mm.dtsi | 19 +++++++++++++++++++
> >  1 file changed, 19 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> > index fe5485ee9419..5f68182ed3a6 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> > @@ -1030,6 +1030,25 @@ aips4: bus@...00000 {
> >                         #size-cells = <1>;
> >                         ranges = <0x32c00000 0x32c00000 0x400000>;
> >
> > +                       lcdif: lcdif@...00000 {
> > +                               compatible = "fsl,imx8mm-lcdif", "fsl,imx6sx-lcdif";
>
> Based on a comment I read from Marek [1] from this patch series for
> the driver, I think fallback compatible should be fsl,imx28-lcdif.
>
> "The iMX8MM and iMX8MN do not support the overlay plane, so they are MXSFB V4"
>
> [1] - https://patchwork.kernel.org/project/dri-devel/patch/20210620224834.189411-1-marex@denx.de/

Yes, I saw that, look like some conversation is going on that thread.
will update accordingly in next version.

Jagan.