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Date:   Fri, 15 Oct 2021 18:44:56 +0100
From:   Robin Murphy <robin.murphy@....com>
To:     Nicolas Frattaroli <frattaroli.nicolas@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     Rob Herring <robh@...nel.org>, linux-rockchip@...ts.infradead.org,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: dt-bindings: rockchip: i2s-tdm: fix rockchip, cru
 requirement

On 2021-10-15 15:31, Nicolas Frattaroli wrote:
> The behaviour described in the bindings is exactly the opposite
> of what it should be, so this patch fixes the description and
> adjusts the if conditions for adding rockchip,cru to required.
> 
> Fixes: 510f1c133aed ("ASoC: dt-bindings: rockchip: add i2s-tdm bindings")
> Signed-off-by: Nicolas Frattaroli <frattaroli.nicolas@...il.com>
> ---
>   .../devicetree/bindings/sound/rockchip,i2s-tdm.yaml   | 11 ++++++++---
>   1 file changed, 8 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml b/Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml
> index ce3e18b50230..93f5221e9381 100644
> --- a/Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml
> +++ b/Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml
> @@ -86,7 +86,7 @@ properties:
>       $ref: /schemas/types.yaml#/definitions/phandle
>       description:
>         The phandle of the cru.
> -      Required if neither trcm-sync-tx-only nor trcm-sync-rx-only are specified.
> +      Required if either trcm-sync-tx-only or trcm-sync-rx-only are specified.
>   
>     rockchip,grf:
>       $ref: /schemas/types.yaml#/definitions/phandle
> @@ -147,8 +147,13 @@ required:
>   allOf:
>     - if:
>         properties:
> -        rockchip,trcm-sync-tx-only: false
> -        rockchip,trcm-sync-rx-only: false
> +        rockchip,trcm-sync-tx-only: true
> +    then:
> +      required:
> +        - rockchip,cru
> +  - if:
> +      properties:
> +        rockchip,trcm-sync-rx-only: true

FWIW, isn't this just a long-winded way to say

   if:
     anyOf:
       - properties:
           rockchip,trcm-sync-tx-only: true
       - properties:
           rockchip,trcm-sync-rx-only: true

which itself could still be more concisely

   if:
     not:
       properties:
         rockchip,trcm-sync-tx-only: false
         rockchip,trcm-sync-rx-only: false

?

Robin.

>       then:
>         required:
>           - rockchip,cru
> 

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