1. Patchew
  2. linux
  3. [PATCH v3 0/6] drm: lcdif: Add i.MX93 LCDIF support
  4. View patch

[PATCH v3 1/6] dt-bindings: lcdif: Add i.MX93 LCDIF support

Liu Ying posted 6 patches 2 years, 12 months ago
There is a newer version of this series
[PATCH v3 1/6] dt-bindings: lcdif: Add i.MX93 LCDIF support
Posted by Liu Ying 2 years, 12 months ago 
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.

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.

v1->v2:
* Add Krzysztof's A-b and Marek's R-b tags on patch 1/6.

 Documentation/devicetree/bindings/display/fsl,lcdif.yaml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

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
-- 
2.37.1
Re: [PATCH v3 1/6] dt-bindings: lcdif: Add i.MX93 LCDIF support
Posted by Alexander Stein 2 years, 11 months ago 
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.
> 
> 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.
> 
> v1->v2:
> * Add Krzysztof's A-b and Marek's R-b tags on patch 1/6.
> 
>  Documentation/devicetree/bindings/display/fsl,lcdif.yaml | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> 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 
DSI, LVDS, and parallel) in a 'ports' subnode. But this binding only supports 
a single 'port' sub-node. Also an example for this case might be very helpful.

Best regards,
Alexander
-- 
TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht München, HRB 105018
Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
http://www.tq-group.com/
Re: [PATCH v3 1/6] dt-bindings: lcdif: Add i.MX93 LCDIF support
Posted by Liu Ying 2 years, 11 months ago 
On Wed, 2023-02-15 at 08:26 +0100, Alexander Stein wrote:
> Hi Liu,

Hi Alexander,

> 
> thanks for the update.

Thanks for the review.

> 
> 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.
> > 
> > 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.
> > 
> > v1->v2:
> > * Add Krzysztof's A-b and Marek's R-b tags on patch 1/6.
> > 
> >  Documentation/devicetree/bindings/display/fsl,lcdif.yaml | 7
> > ++++++-
> >  1 file changed, 6 insertions(+), 1 deletion(-)
> > 
> > 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 
> DSI, LVDS, and parallel) in a 'ports' subnode. But this binding only
> supports 
> a single 'port' sub-node. Also an example for this case might be very
> helpful.

The port node allows multiple endpoints(See graph.yaml[1]).  It's
enough to use the existing port node instead of using ports node.

For i.MX93 LCDIF, the port node will be something like this:
--------------------8<--------------------------
port {
        #address-cells = <1>;
        #size-cells = <0>;

        lcdif_to_pdfc: endpoint@0 {
                reg = <0>;
        };

        lcdif_to_ldb: endpoint@1 {
                reg = <1>;
        };

        lcdif_to_cross_line_pattern: endpoint@2 {
                reg = <2>;
        };
};
--------------------8<--------------------------

Looks like it's not necessary to add a specifc example for i.MX93
LCDIF.

[1] 
https://github.com/devicetree-org/dt-schema/blob/main/dtschema/schemas/graph.yaml#L48

Regards,
Liu Ying
Re: [PATCH v3 1/6] dt-bindings: lcdif: Add i.MX93 LCDIF support
Posted by Alexander Stein 2 years, 11 months ago 
Hi Liu,

Am Mittwoch, 15. Februar 2023, 08:49:56 CET schrieb Liu Ying:
> On Wed, 2023-02-15 at 08:26 +0100, Alexander Stein wrote:
> > Hi Liu,
> 
> Hi Alexander,
> 
> > thanks for the update.
> 
> Thanks for the review.
> 
> > 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.
> > > 
> > > 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.
> > > 
> > > v1->v2:
> > > * Add Krzysztof's A-b and Marek's R-b tags on patch 1/6.
> > > 
> > >  Documentation/devicetree/bindings/display/fsl,lcdif.yaml | 7
> > > 
> > > ++++++-
> > > 
> > >  1 file changed, 6 insertions(+), 1 deletion(-)
> > > 
> > > 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
> > DSI, LVDS, and parallel) in a 'ports' subnode. But this binding only
> > supports
> > a single 'port' sub-node. Also an example for this case might be very
> > helpful.
> 
> The port node allows multiple endpoints(See graph.yaml[1]).  It's
> enough to use the existing port node instead of using ports node.

Ah, I wasn't aware of that possibility for OF graph. Yep, agreed then it's 
enough.

> For i.MX93 LCDIF, the port node will be something like this:
> --------------------8<--------------------------
> port {
>         #address-cells = <1>;
>         #size-cells = <0>;
> 
>         lcdif_to_pdfc: endpoint@0 {
>                 reg = <0>;
>         };
> 
>         lcdif_to_ldb: endpoint@1 {
>                 reg = <1>;
>         };
> 
>         lcdif_to_cross_line_pattern: endpoint@2 {
>                 reg = <2>;
>         };
> };
> --------------------8<--------------------------
> 
> Looks like it's not necessary to add a specifc example for i.MX93
> LCDIF.

Fine by me.
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>

> [1]
> https://github.com/devicetree-org/dt-schema/blob/main/dtschema/schemas/graph
> .yaml#L48
> 
> Regards,
> Liu Ying

TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht München, HRB 105018
Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider

Patchew 2.1-devel-b67e4c2

© 2016 - 2026 Red Hat, Inc.