linux-kernel - Re: [PATCH v2 1/8] dt-bindings: clock: samsung: convert Exynos5250 to dtschema

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Message-ID: <c7311cd1-7e62-91d9-bbbd-cfc3c027da35@canonical.com>
Date:   Wed, 18 Aug 2021 08:49:22 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Tomasz Figa <tomasz.figa@...il.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sam Protsenko <semen.protsenko@...aro.org>
Subject: Re: [PATCH v2 1/8] dt-bindings: clock: samsung: convert Exynos5250 to
 dtschema

On 17/08/2021 22:16, Rob Herring wrote:
> On Tue, Aug 10, 2021 at 11:31:38AM +0200, Krzysztof Kozlowski wrote:
>> Convert Samsung Exynos5250 clock controller bindings to DT schema format
>> using json-schema.
>>
>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
>> ---
>>  .../bindings/clock/exynos5250-clock.txt       | 41 ----------------
>>  .../bindings/clock/samsung,exynos-clock.yaml  | 48 +++++++++++++++++++
>>  MAINTAINERS                                   |  1 +
>>  3 files changed, 49 insertions(+), 41 deletions(-)
>>  delete mode 100644 Documentation/devicetree/bindings/clock/exynos5250-clock.txt
>>  create mode 100644 Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/clock/exynos5250-clock.txt b/Documentation/devicetree/bindings/clock/exynos5250-clock.txt
>> deleted file mode 100644
>> index aff266a12eeb..000000000000
>> --- a/Documentation/devicetree/bindings/clock/exynos5250-clock.txt
>> +++ /dev/null
>> @@ -1,41 +0,0 @@
>> -* Samsung Exynos5250 Clock Controller
>> -
>> -The Exynos5250 clock controller generates and supplies clock to various
>> -controllers within the Exynos5250 SoC.
>> -
>> -Required Properties:
>> -
>> -- compatible: should be one of the following.
>> -  - "samsung,exynos5250-clock" - controller compatible with Exynos5250 SoC.
>> -
>> -- reg: physical base address of the controller and length of memory mapped
>> -  region.
>> -
>> -- #clock-cells: should be 1.
>> -
>> -Each clock is assigned an identifier and client nodes can use this identifier
>> -to specify the clock which they consume.
>> -
>> -All available clocks are defined as preprocessor macros in
>> -dt-bindings/clock/exynos5250.h header and can be used in device
>> -tree sources.
>> -
>> -Example 1: An example of a clock controller node is listed below.
>> -
>> -	clock: clock-controller@...10000 {
>> -		compatible = "samsung,exynos5250-clock";
>> -		reg = <0x10010000 0x30000>;
>> -		#clock-cells = <1>;
>> -	};
>> -
>> -Example 2: UART controller node that consumes the clock generated by the clock
>> -	   controller. Refer to the standard clock bindings for information
>> -	   about 'clocks' and 'clock-names' property.
>> -
>> -	serial@...20000 {
>> -		compatible = "samsung,exynos4210-uart";
>> -		reg = <0x13820000 0x100>;
>> -		interrupts = <0 54 0>;
>> -		clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>;
>> -		clock-names = "uart", "clk_uart_baud0";
>> -	};
>> diff --git a/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml
>> new file mode 100644
>> index 000000000000..cd6567bd8cc7
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/samsung,exynos-clock.yaml
>> @@ -0,0 +1,48 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/clock/samsung,exynos-clock.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Samsung Exynos SoC clock controller
>> +
>> +maintainers:
>> +  - Chanwoo Choi <cw00.choi@...sung.com>
>> +  - Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
>> +  - Sylwester Nawrocki <s.nawrocki@...sung.com>
>> +  - Tomasz Figa <tomasz.figa@...il.com>
>> +
>> +description: |
>> +  All available clocks are defined as preprocessor macros in
>> +  dt-bindings/clock/ headers.
>> +
>> +properties:
>> +  compatible:
>> +    const: samsung,exynos5250-clock
>> +
>> +  assigned-clocks: true
>> +  assigned-clock-parents: true
>> +  assigned-clock-rates: true
> 
> These can be dropped. They are always allowed if 'clocks' is present.
> 
>> +  clocks: true
> 
> This needs to define how many.
> 

Right, thanks.


Best regards,
Krzysztof