linux-kernel - Re: [PATCH v4 20/20] dt-bindings: arm: hisilicon: convert LPC controller bindings to json-schema

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Message-ID: <ccee45bf-746e-3f78-f026-d06768ba845c@huawei.com>
Date:   Tue, 29 Sep 2020 11:11:11 +0800
From:   "Leizhen (ThunderTown)" <thunder.leizhen@...wei.com>
To:     Rob Herring <robh@...nel.org>
CC:     Wei Xu <xuwei5@...ilicon.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Libin <huawei.libin@...wei.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: Re: [PATCH v4 20/20] dt-bindings: arm: hisilicon: convert LPC
 controller bindings to json-schema



On 2020/9/29 3:16, Rob Herring wrote:
> On Mon, Sep 28, 2020 at 11:13:24PM +0800, Zhen Lei wrote:
>> Convert the Hisilicon Hip06 SoCs implement a Low Pin Count (LPC)
>> controller binding to DT schema format using json-schema.
>>
>> Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
>> ---
>>  .../arm/hisilicon/hisilicon-low-pin-count.txt      | 33 ------------
>>  .../arm/hisilicon/hisilicon-low-pin-count.yaml     | 61 ++++++++++++++++++++++
>>  2 files changed, 61 insertions(+), 33 deletions(-)
>>  delete mode 100644 Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt
>>  create mode 100644 Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt
>> deleted file mode 100644
>> index 10bd35f9207f2ee..000000000000000
>> --- a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt
>> +++ /dev/null
>> @@ -1,33 +0,0 @@
>> -Hisilicon Hip06 Low Pin Count device
>> -  Hisilicon Hip06 SoCs implement a Low Pin Count (LPC) controller, which
>> -  provides I/O access to some legacy ISA devices.
>> -  Hip06 is based on arm64 architecture where there is no I/O space. So, the
>> -  I/O ports here are not CPU addresses, and there is no 'ranges' property in
>> -  LPC device node.
>> -
>> -Required properties:
>> -- compatible:  value should be as follows:
>> -	(a) "hisilicon,hip06-lpc"
>> -	(b) "hisilicon,hip07-lpc"
>> -- #address-cells: must be 2 which stick to the ISA/EISA binding doc.
>> -- #size-cells: must be 1 which stick to the ISA/EISA binding doc.
>> -- reg: base memory range where the LPC register set is mapped.
>> -
>> -Note:
>> -  The node name before '@' must be "isa" to represent the binding stick to the
>> -  ISA/EISA binding specification.
>> -
>> -Example:
>> -
>> -isa@...b0000 {
>> -	compatible = "hisilicon,hip06-lpc";
>> -	#address-cells = <2>;
>> -	#size-cells = <1>;
>> -	reg = <0x0 0xa01b0000 0x0 0x1000>;
>> -
>> -	ipmi0: bt@e4 {
>> -		compatible = "ipmi-bt";
>> -		device_type = "ipmi";
>> -		reg = <0x01 0xe4 0x04>;
>> -	};
>> -};
>> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.yaml b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.yaml
>> new file mode 100644
>> index 000000000000000..83ca10adce71b62
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.yaml
>> @@ -0,0 +1,61 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/arm/hisilicon/hisilicon-low-pin-count.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Hisilicon Hip06 Low Pin Count device
>> +
>> +maintainers:
>> +  - Wei Xu <xuwei5@...ilicon.com>
>> +
>> +description: |
>> +  Hisilicon Hip06 SoCs implement a Low Pin Count (LPC) controller, which
>> +  provides I/O access to some legacy ISA devices.
>> +  Hip06 is based on arm64 architecture where there is no I/O space. So, the
>> +  I/O ports here are not CPU addresses, and there is no 'ranges' property in
>> +  LPC device node.
>> +
>> +properties:
>> +  $nodename:
>> +    pattern: '^isa@[0-9a-f]+$'
>> +    description: |
>> +      The node name before '@' must be "isa" to represent the binding stick
>> +      to the ISA/EISA binding specification.
>> +
>> +  compatible:
>> +    enum:
>> +      - hisilicon,hip06-lpc
>> +      - hisilicon,hip07-lpc
>> +
>> +  reg:
>> +    description: base memory range where the LPC register set is mapped.
> 
> Drop description.

OK

> 
>> +    maxItems: 1
>> +
>> +  '#address-cells':
>> +    description: must be 2 which stick to the ISA/EISA binding doc.
> 
> Drop.

OK

> 
>> +    const: 2
>> +
>> +  '#size-cells':
>> +    description: must be 1 which stick to the ISA/EISA binding doc.
> 
> Drop.

OK

> 
>> +    const: 1
>> +
>> +required:
>> +  - compatible
>> +  - reg
> 
> additionalProperties:
>   type: object

OK, I will add it.

> 
>> +
>> +examples:
>> +  - |
>> +    isa@...b0000 {
>> +        compatible = "hisilicon,hip06-lpc";
>> +        #address-cells = <2>;
>> +        #size-cells = <1>;
>> +        reg = <0xa01b0000 0x1000>;
>> +
>> +        ipmi0: bt@e4 {
>> +            compatible = "ipmi-bt";
>> +            device_type = "ipmi";
>> +            reg = <0x01 0xe4 0x04>;
>> +        };
>> +    };
>> +...
>> -- 
>> 1.8.3
>>
>>
> 
> .
>