linux-kernel - Re: [PATCH v3 21/26] dt-bindings: crypto: convert rockchip-crypto to yaml

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Message-ID: <c0ae3465-9185-197f-65a4-49df856bc2e0@kernel.org>
Date:   Thu, 24 Mar 2022 19:19:31 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     LABBE Corentin <clabbe@...libre.com>
Cc:     heiko@...ech.de, herbert@...dor.apana.org.au, krzk+dt@...nel.org,
        mturquette@...libre.com, robh+dt@...nel.org, sboyd@...nel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-clk@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH v3 21/26] dt-bindings: crypto: convert rockchip-crypto to
 yaml

On 24/03/2022 17:20, LABBE Corentin wrote:

(...)
>>
>>> +    resets:
>>> +      minItems: 6
>>> +else:
>>> +  if:
>>> +    properties:
>>> +      compatible:
>>> +        const: rockchip,rk3328-crypto
>>> +  then:
>>> +    properties:
>>> +      clocks:
>>> +        minItems: 3
>>> +      clock-names:
>>> +        minItems: 3
>>> +
>>
> 
> I have create a binding update patch (https://github.com/montjoie/linux/commit/da05ef9bb488c16cfd15a47054f5b1161829b6bf)
> But I have lot of problem, DT are not validating.
> Example: Documentation/devicetree/bindings/crypto/rockchip,rk3288-crypto.example.dtb: crypto@...a0000: resets: [[4294967295, 174]] is too short
> 
> I have tried also to set default resets/maxItems to 3 and setting it to 4 via an if. But I still got error like maxItems cannot be update after initial set.
> 
> Any idea on why my new binding update patch is failling ?

For such case one way to solve is to:
1. Define the most relaxed min/maxItems in properties.
2. Narrow the min/maxItems in allOf for each flavor.
Something like in clocks for:
Documentation/devicetree/bindings/clock/samsung,exynos7885-clock.yaml


Best regards,
Krzysztof