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Message-ID: <20191029220620.GA14316@bogus>
Date:   Tue, 29 Oct 2019 17:06:20 -0500
From:   Rob Herring <robh@...nel.org>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Maxime Ripard <mripard@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Mark Rutland <mark.rutland@....com>,
        michael@...rulasolutions.com, Icenowy Zheng <icenowy@...c.io>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-amarula@...rulasolutions.com
Subject: Re: [PATCH v11 1/7] dt-bindings: sun6i-dsi: Document A64 MIPI-DSI
 controller

On Fri, Oct 25, 2019 at 11:26:19PM +0530, Jagan Teki wrote:
> The MIPI DSI controller in Allwinner A64 is similar to A33.
> 
> But unlike A33, A64 doesn't have DSI_SCLK gating so it is valid
> to have separate compatible for A64 on the same driver.
> 
> DSI_SCLK uses mod clock-names on dt-bindings, so the same
> is not required for A64.
> 
> On that note
> - A64 require minimum of 1 clock like the bus clock
> - A33 require minimum of 2 clocks like both bus, mod clocks
> 
> So, update dt-bindings so-that it can document both A33,
> A64 bindings requirements.
> 
> Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
> ---
>  .../display/allwinner,sun6i-a31-mipi-dsi.yaml | 20 +++++++++++++++++--
>  1 file changed, 18 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml b/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml
> index dafc0980c4fa..2b7016ca382c 100644
> --- a/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml
> +++ b/Documentation/devicetree/bindings/display/allwinner,sun6i-a31-mipi-dsi.yaml
> @@ -15,7 +15,9 @@ properties:
>    "#size-cells": true
>  
>    compatible:
> -    const: allwinner,sun6i-a31-mipi-dsi
> +    oneOf:
> +      - const: allwinner,sun6i-a31-mipi-dsi
> +      - const: allwinner,sun50i-a64-mipi-dsi

Use 'enum' instead of oneOf+const.

With that fixed,

Reviewed-by: Rob Herring <robh@...nel.org>

>  
>    reg:
>      maxItems: 1
> @@ -24,6 +26,8 @@ properties:
>      maxItems: 1
>  
>    clocks:
> +    minItems: 1
> +    maxItems: 2
>      items:
>        - description: Bus Clock
>        - description: Module Clock
> @@ -63,13 +67,25 @@ required:
>    - reg
>    - interrupts
>    - clocks
> -  - clock-names
>    - phys
>    - phy-names
>    - resets
>    - vcc-dsi-supply
>    - port
>  
> +allOf:
> +  - if:
> +      properties:
> +         compatible:
> +           contains:
> +             const: allwinner,sun6i-a31-mipi-dsi
> +      then:
> +        properties:
> +          clocks:
> +            minItems: 2
> +        required:
> +          - clock-names
> +
>  additionalProperties: false
>  
>  examples:
> -- 
> 2.18.0.321.gffc6fa0e3
> 

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