Re: [PATCH v1 1/6] dt-bindings: mediatek,dpi: Add mt8195 dpintf

[Markus Schneider-Pargmann <msp@baylibre.com>]

Hi Sam,

On Mon, Sep 06, 2021 at 10:14:05PM +0200, Sam Ravnborg wrote:
> Hi Markus,
> 
> On Mon, Sep 06, 2021 at 09:35:24PM +0200, Markus Schneider-Pargmann wrote:
> > DP_INTF is similar to the actual dpi. They differ in some points
> > regarding registers and what needs to be set but the function blocks
> > itself are similar in design.
> > 
> > Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
> 
> I fail to see why they share the same dt-schema as the main content in
> the schema is the clocks and they differ.
> 
> A new mediatek,dpintf schema seems more appropriate.

Good idea, I will do that. Thank you.

Best,
Markus

> 
> I recall I though so when reading the RFC variant but failed to comment on it.
> 
> 	Sam
> 
> > ---
> >  .../display/mediatek/mediatek,dpi.yaml        | 43 ++++++++++++++++---
> >  1 file changed, 37 insertions(+), 6 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
> > index dd2896a40ff0..1a158b719ce6 100644
> > --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
> > +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
> > @@ -4,7 +4,7 @@
> >  $id: http://devicetree.org/schemas/display/mediatek/mediatek,dpi.yaml#
> >  $schema: http://devicetree.org/meta-schemas/core.yaml#
> >  
> > -title: mediatek DPI Controller Device Tree Bindings
> > +title: mediatek DPI/DP_INTF Controller Device Tree Bindings
> >  
> >  maintainers:
> >    - CK Hu <ck.hu@mediatek.com>
> > @@ -13,7 +13,8 @@ maintainers:
> >  description: |
> >    The Mediatek DPI function block is a sink of the display subsystem and
> >    provides 8-bit RGB/YUV444 or 8/10/10-bit YUV422 pixel data on a parallel
> > -  output bus.
> > +  output bus. The Mediatek DP_INTF is a similar function block that is
> > +  connected to the (embedded) display port function block.
> >  
> >  properties:
> >    compatible:
> > @@ -23,6 +24,7 @@ properties:
> >        - mediatek,mt8173-dpi
> >        - mediatek,mt8183-dpi
> >        - mediatek,mt8192-dpi
> > +      - mediatek,mt8195-dpintf
> >  
> >    reg:
> >      maxItems: 1
> > @@ -37,10 +39,11 @@ properties:
> >        - description: DPI PLL
> >  
> >    clock-names:
> > -    items:
> > -      - const: pixel
> > -      - const: engine
> > -      - const: pll
> > +    description:
> > +      For dpi clocks pixel, engine and pll are required. For dpintf pixel,
> > +      hf_fmm and hf_fdp are required.
> > +    minItems: 3
> > +    maxItems: 3
> >  
> >    pinctrl-0: true
> >    pinctrl-1: true
> > @@ -64,6 +67,34 @@ required:
> >    - clock-names
> >    - port
> >  
> > +allOf:
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - mediatek,mt8195-dpintf
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 3
> > +          maxItems: 3
> > +        clock-names:
> > +          items:
> > +            - const: pixel
> > +            - const: hf_fmm
> > +            - const: hf_fdp
> > +    else:
> > +      properties:
> > +        clocks:
> > +          minItems: 3
> > +          maxItems: 3
> > +        clock-names:
> > +          items:
> > +            - const: pixel
> > +            - const: engine
> > +            - const: pll
> > +
> >  additionalProperties: false
> >  
> >  examples:
> > -- 
> > 2.33.0

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