linux-kernel - Re: [PATCH v4 01/29] dt-bindings: display: rockchip,inno-hdmi: Document RK3128 compatible

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Message-ID: <18743278.sWSEgdgrri@diego>
Date: Sat, 30 Dec 2023 00:26:22 +0100
From: Heiko Stübner <heiko@...ech.de>
To: Sandy Huang <hjc@...k-chips.com>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Alex Bee <knaerzche@...il.com>
Cc: David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
 dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org,
 linux-kernel@...r.kernel.org, Alex Bee <knaerzche@...il.com>,
 Conor Dooley <conor.dooley@...rochip.com>
Subject:
 Re: [PATCH v4 01/29] dt-bindings: display: rockchip,inno-hdmi: Document
 RK3128 compatible

Am Freitag, 22. Dezember 2023, 18:41:52 CET schrieb Alex Bee:
> The integration for this SoC is different from the currently existing: It
> needs it's PHY's reference clock rate to calculate the DDC bus frequency
> correctly. The controller is also part of a powerdomain, so this gets added
> as an mandatory property for this variant.
> 
> Signed-off-by: Alex Bee <knaerzche@...il.com>
> Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>

this is just a note to myself:

The binding conversion to yaml was picked by Rob in [0], so will most 
likely be part of 6.8-rc1, so this will need to wait until 6.8-rc1 gets into
drm-misc-next .


Heiko


[0] https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git/commit/?h=for-next&id=7048708fec3a401f9a70e4a74e2e12aa7f88c132

> ---
> changes in v2:
>  - clarify that the controller itself is part of the powerdomain
>  - simplify clock-names
>  - made power-domains property only allowed (and required) for new variant
> 
> changes in v3:
>  - collect RB
> 
> changes in v4:
>  - none
> 
>  .../display/rockchip/rockchip,inno-hdmi.yaml  | 40 ++++++++++++++++++-
>  1 file changed, 38 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml
> index 96889c86849a..be78dcfa1c76 100644
> --- a/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml
> +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,inno-hdmi.yaml
> @@ -14,6 +14,7 @@ properties:
>    compatible:
>      enum:
>        - rockchip,rk3036-inno-hdmi
> +      - rockchip,rk3128-inno-hdmi
>  
>    reg:
>      maxItems: 1
> @@ -22,10 +23,19 @@ properties:
>      maxItems: 1
>  
>    clocks:
> -    maxItems: 1
> +    minItems: 1
> +    items:
> +      - description: The HDMI controller main clock
> +      - description: The HDMI PHY reference clock
>  
>    clock-names:
> -    const: pclk
> +    minItems: 1
> +    items:
> +      - const: pclk
> +      - const: ref
> +
> +  power-domains:
> +    maxItems: 1
>  
>    ports:
>      $ref: /schemas/graph.yaml#/properties/ports
> @@ -55,6 +65,32 @@ required:
>    - pinctrl-names
>    - ports
>  
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: rockchip,rk3036-inno-hdmi
> +
> +    then:
> +      properties:
> +        power-domains: false
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: rockchip,rk3128-inno-hdmi
> +
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 2
> +        clock-names:
> +          minItems: 2
> +      required:
> +        - power-domains
> +
>  additionalProperties: false
>  
>  examples:
>