From:   Alexander Stein <alexander.stein@ew.tq-group.com>
To:     dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        Liu Ying <victor.liu@nxp.com>
Cc:     marex@denx.de, stefan@agner.ch, airlied@gmail.com, daniel@ffwll.ch,
        robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de,
        festevam@gmail.com, linux-imx@nxp.com,
        krzysztof.kozlowski@linaro.org, LW@karo-electronics.de
Subject: Re: [PATCH v3 1/6] dt-bindings: lcdif: Add i.MX93 LCDIF support
Date:   Wed, 15 Feb 2023 08:26:16 +0100
Message-ID: <2551514.Lt9SDvczpP@steina-w>
Organization: TQ-Systems GmbH
In-Reply-To: <20230213085612.1026538-2-victor.liu@nxp.com>
References: <20230213085612.1026538-1-victor.liu@nxp.com> <20230213085612.1026538-2-victor.liu@nxp.com>
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset="iso-8859-1"
Precedence: bulk

Hi Liu,

thanks for the update.

Am Montag, 13. Februar 2023, 09:56:07 CET schrieb Liu Ying:
> There is one LCDIF embedded in i.MX93 SoC to connect with
> MIPI DSI controller through LCDIF cross line pattern(controlled
> by mediamix blk-ctrl) or connect with LVDS display bridge(LDB)
> directly or connect with a parallel display through parallel
> display format(also controlled by mediamix blk-ctrl).  i.MX93
> LCDIF IP is essentially the same to i.MX8MP LCDIF IP.  Add device
> tree binding for i.MX93 LCDIF.
>=20
> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Reviewed-by: Marek Vasut <marex@denx.de>
> Signed-off-by: Liu Ying <victor.liu@nxp.com>
> ---
> v2->v3:
> * No change.
>=20
> v1->v2:
> * Add Krzysztof's A-b and Marek's R-b tags on patch 1/6.
>=20
>  Documentation/devicetree/bindings/display/fsl,lcdif.yaml | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>=20
> diff --git a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
> b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml index
> 75b4efd70ba8..fc11ab5fc465 100644
> --- a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
> +++ b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
> @@ -21,6 +21,7 @@ properties:
>            - fsl,imx28-lcdif
>            - fsl,imx6sx-lcdif
>            - fsl,imx8mp-lcdif
> +          - fsl,imx93-lcdif
>        - items:
>            - enum:
>                - fsl,imx6sl-lcdif
> @@ -88,7 +89,9 @@ allOf:
>        properties:
>          compatible:
>            contains:
> -            const: fsl,imx8mp-lcdif
> +            enum:
> +              - fsl,imx8mp-lcdif
> +              - fsl,imx93-lcdif
>      then:
>        properties:
>          clocks:
> @@ -107,6 +110,7 @@ allOf:
>                enum:
>                  - fsl,imx6sx-lcdif
>                  - fsl,imx8mp-lcdif
> +                - fsl,imx93-lcdif
>      then:
>        properties:
>          clocks:
> @@ -123,6 +127,7 @@ allOf:
>                - fsl,imx8mm-lcdif
>                - fsl,imx8mn-lcdif
>                - fsl,imx8mp-lcdif
> +              - fsl,imx93-lcdif
>      then:
>        required:
>          - power-domains

I would have expected that fsl,imx93-lcdif supports up to 3 endpoints (MIPI=
=20
DSI, LVDS, and parallel) in a 'ports' subnode. But this binding only suppor=
ts=20
a single 'port' sub-node. Also an example for this case might be very helpf=
ul.

Best regards,
Alexander
=2D-=20
TQ-Systems GmbH | M=FChlstra=DFe 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht M=FCnchen, HRB 105018
Gesch=E4ftsf=FChrer: Detlef Schneider, R=FCdiger Stahl, Stefan Schneider
http://www.tq-group.com/