linux-kernel - Re: [PATCH v3 1/2] dt-bindings: reset: Add YAML schemas for the Intel Reset controller

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Date:   Mon, 25 Nov 2019 14:50:06 +0800
From:   Dilip Kota <eswara.kota@...ux.intel.com>
To:     Rob Herring <robh@...nel.org>
Cc:     p.zabel@...gutronix.de, martin.blumenstingl@...glemail.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        cheol.yong.kim@...el.com, chuanhua.lei@...ux.intel.com,
        qi-ming.wu@...el.com
Subject: Re: [PATCH v3 1/2] dt-bindings: reset: Add YAML schemas for the Intel
 Reset controller


On 11/23/2019 8:42 AM, Rob Herring wrote:
> On Wed, Nov 20, 2019 at 02:10:23PM +0800, Dilip Kota wrote:
>> Add YAML schemas for the reset controller on Intel
>> Gateway SoC.
>>
>> Signed-off-by: Dilip Kota <eswara.kota@...ux.intel.com>
>> ---
>> Changes on v3:
>> 	Fix DTC warnings
>> 	Add support to legacy xrx200 SoC
>> 	Change file name to intel,rcu-gw.yaml
>>
>>   .../devicetree/bindings/reset/intel,rcu-gw.yaml    | 59 ++++++++++++++++++++++
>>   1 file changed, 59 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/reset/intel,rcu-gw.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/reset/intel,rcu-gw.yaml b/Documentation/devicetree/bindings/reset/intel,rcu-gw.yaml
>> new file mode 100644
>> index 000000000000..743be2c49fb8
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/reset/intel,rcu-gw.yaml
>> @@ -0,0 +1,59 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/reset/intel,rcu-gw.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: System Reset Controller on Intel Gateway SoCs
>> +
>> +maintainers:
>> +  - Dilip Kota <eswara.kota@...ux.intel.com>
>> +
>> +properties:
>> +  compatible:
>> +    oneOf:
>> +      - items:
> You can drop oneOf and items here.
Ok.
Got it, mentioning 'enum:' tells that compatible will take one of the 
enum values. (Again, I just gone through existing yaml files after 
reading your comment).

So, no need of oneOf and items:,  I will update in the next patch revision.

>
>> +          - enum:
>> +              - intel,rcu-lgm
>> +              - intel,rcu-xrx200
>> +
>> +  reg:
>> +    description: Reset controller registers.
> maxItems: 1
Ok. I will add it.
>
>> +
>> +  intel,global-reset:
>> +    $ref: /schemas/types.yaml#/definitions/uint32-array
>> +    description: Global reset register offset and bit offset.
> maxItems: 2
Ok. I will add it.

Regards,
Dilip
>
>> +
>> +  "#reset-cells":
>> +    minimum: 2
>> +    maximum: 3
>> +    description: |
>> +      First cell is reset request register offset.
>> +      Second cell is bit offset in reset request register.
>> +      Third cell is bit offset in reset status register.
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - intel,global-reset
>> +  - "#reset-cells"
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    rcu0: reset-controller@...00000 {
>> +        compatible = "intel,rcu-lgm";
>> +        reg = <0xe0000000 0x20000>;
>> +        intel,global-reset = <0x10 30>;
>> +        #reset-cells = <2>;
>> +    };
>> +
>> +    pwm: pwm@...00000 {
>> +        status = "disabled";
>> +        compatible = "intel,lgm-pwm";
>> +        reg = <0xe0d00000 0x30>;
>> +        clocks = <&cgu0 1>;
>> +        #pwm-cells = <2>;
>> +        resets = <&rcu0 0x30 21>;
>> +    };
>> -- 
>> 2.11.0
>>