[PATCH v8 2/5] dt-bindings: soc: sophgo: Add Sophgo system control module

[Chen Wang]

On 2024/1/16 18:06, Krzysztof Kozlowski wrote:
> On 16/01/2024 08:21, Chen Wang wrote:
>> From: Chen Wang <unicorn_wang at outlook.com>
>>
>> Add documentation to describe Sophgo System Control for SG2042.
>>
>> Signed-off-by: Chen Wang <unicorn_wang at outlook.com>
>> ---
>>   .../soc/sophgo/sophgo,sg2042-sysctrl.yaml     | 46 +++++++++++++++++++
>>   1 file changed, 46 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-sysctrl.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-sysctrl.yaml b/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-sysctrl.yaml
>> new file mode 100644
>> index 000000000000..7b50bb56b4cf
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-sysctrl.yaml
>> @@ -0,0 +1,46 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/soc/sophgo/sophgo,sg2042-sysctrl.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Sophgo SG2042 SoC system control
>> +
>> +maintainers:
>> +  - Chen Wang <unicorn_wang at outlook.com>
>> +
>> +description:
>> +  The Sophgo system control is a registers block (SYS_CTRL), providing multiple
>> +  low level platform functions like chip configuration, clock control, etc.
>> +
>> +properties:
>> +  compatible:
>> +    const: sophgo,sg2042-sysctrl
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clock-controller:
>> +    # Child node
> Drop the comment, it is obvious. It cannot be anything else.
>
>> +    $ref: /schemas/clock/sophgo,sg2042-sysclk.yaml#
>> +    type: object
> Why isn't this merged here? You do not need the child node really...
> unless the clock inputs are specific to that clock controller and you
> will have here more devices? But where are they in such case?
I don't see more devices will be included later. It should be ok to 
merge them into one.
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - clock-controller
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    system-control at 30010000 {
> Why did you change the name? Please provide detailed changelog with
> explanation of such changes.

I changed the name due to I find the 
TRM(https://github.com/sophgo/sophgo-doc/blob/main/SG2042/TRM/source/system-control.rst) 
call it "system control",  so I changed it in v8.

Which one do you prefer? I'm not sure if there are any requirements for 
this?

>> +        compatible = "sophgo,sg2042-sysctrl";
>> +        reg = <0x30010000 0x1000>;
>> +
> Best regards,
> Krzysztof
>