linux-kernel - Re: [PATCH 2/2] dt-bindings: rng: convert Samsung Exynos TRNG to dtschema

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Date:   Tue, 17 Aug 2021 14:34:56 +0200
From:   Lukasz Stelmach <l.stelmach@...sung.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matt Mackall <mpm@...enic.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-crypto@...r.kernel.org
Subject: Re: [PATCH 2/2] dt-bindings: rng: convert Samsung Exynos TRNG to
 dtschema

It was <2021-08-17 wto 12:05>, when Krzysztof Kozlowski wrote:
> 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@...onical.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@...30600 {
>>> -		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@...onical.com>
>>> +  - Łukasz Stelmach <l.stelmach@...sung.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.
>

The description that "was" in the txt file.

>> 
>>> +
>>> +  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
>
>

-- 
Łukasz Stelmach
Samsung R&D Institute Poland
Samsung Electronics

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