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Subject: Re: [PATCH 2/2] dt-bindings: rng: convert Samsung Exynos TRNG to
 dtschema
To:     Lukasz Stelmach <l.stelmach@samsung.com>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Marc Zyngier <maz@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Matt Mackall <mpm@selenic.com>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-samsung-soc@vger.kernel.org, linux-crypto@vger.kernel.org
References: <20210811084306.28740-2-krzysztof.kozlowski@canonical.com>
 <CGME20210817095553eucas1p174e68fc6d7cfad9c2fd34f729272b01a@eucas1p1.samsung.com>
 <dleftjeeasfl9b.fsf%l.stelmach@samsung.com>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Message-ID: <c3a1d7d2-7b32-b7eb-4647-f86e22f5e5ff@canonical.com>
Date:   Tue, 17 Aug 2021 12:05:20 +0200
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On 17/08/2021 11:55, Lukasz Stelmach wrote:
> It was <2021-08-11 śro 10:43>, when Krzysztof Kozlowski wrote:
>> Convert Samsung Exynos SoC True Random Number Generator bindings to DT
>> schema format using json-schema.
>>
>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
>> ---
>>  .../bindings/rng/samsung,exynos5250-trng.txt  | 17 -------
>>  .../bindings/rng/samsung,exynos5250-trng.yaml | 44 +++++++++++++++++++
>>  MAINTAINERS                                   |  2 +-
>>  3 files changed, 45 insertions(+), 18 deletions(-)
>>  delete mode 100644 Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.txt
>>  create mode 100644 Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml
>>
>> diff --git
>> a/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.txt
>> b/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.txt
>> deleted file mode 100644
>> index 5a613a4ec780..000000000000
>> --- a/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.txt
>> +++ /dev/null
>> @@ -1,17 +0,0 @@
>> -Exynos True Random Number Generator
>> -
>> -Required properties:
>> -
>> -- compatible  : Should be "samsung,exynos5250-trng".
>> -- reg         : Specifies base physical address and size of the registers map.
>> -- clocks      : Phandle to clock-controller plus clock-specifier pair.
>> -- clock-names : "secss" as a clock name.
>> -
>> -Example:
>> -
>> -	rng@10830600 {
>> -		compatible = "samsung,exynos5250-trng";
>> -		reg = <0x10830600 0x100>;
>> -		clocks = <&clock CLK_SSS>;
>> -		clock-names = "secss";
>> -	};
>> diff --git
>> a/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml
>> b/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml
>> new file mode 100644
>> index 000000000000..a50c34d5d199
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml
>> @@ -0,0 +1,44 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id:
>> https://protect2.fireeye.com/v1/url?k=f38ca35b-ac179a0d-f38d2814-0cc47a31ce52-1faa1ecb65482b8a&q=1&e=8b3490f9-a5fc-4da0-b2ee-7b0aec781403&u=http%3A%2F%2Fdevicetree.org%2Fschemas%2Frng%2Fsamsung%2Cexynos5250-trng.yaml%23
>> +$schema:
>> https://protect2.fireeye.com/v1/url?k=9409519d-cb9268cb-9408dad2-0cc47a31ce52-12394c4409905980&q=1&e=8b3490f9-a5fc-4da0-b2ee-7b0aec781403&u=http%3A%2F%2Fdevicetree.org%2Fmeta-schemas%2Fcore.yaml%23
>> +
>> +title: Samsung Exynos SoC True Random Number Generator
>> +
>> +maintainers:
>> +  - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
>> +  - Łukasz Stelmach <l.stelmach@samsung.com>
>> +
>> +properties:
>> +  compatible:
>> +    const: samsung,exynos5250-trng
>> +
>> +  clocks:
>> +    maxItems: 1
> 
> How about copying description from above into the description: property?

But what to copy? There is no description except generic clock bindings.

> 
>> +
>> +  clock-names:
>> +    items:
>> +      - const: secss
>> +
>> +  reg:
>> +    maxItems: 1
> 
> ditto.

The same, I have no clue what to copy. It's obvious that reg contains
"physical address and size of the registers map".


Best regards,
Krzysztof