From: Chen Wang <unicorn_wang@outlook.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
Chen Wang <unicornxw@gmail.com>,
aou@eecs.berkeley.edu, chao.wei@sophgo.com, conor@kernel.org,
krzysztof.kozlowski+dt@linaro.org, mturquette@baylibre.com,
palmer@dabbelt.com, paul.walmsley@sifive.com,
richardcochran@gmail.com, robh+dt@kernel.org, sboyd@kernel.org,
devicetree@vger.kernel.org, linux-clk@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
haijiao.liu@sophgo.com, xiaoguang.xing@sophgo.com,
guoren@kernel.org, jszhang@kernel.org, inochiama@outlook.com,
samuel.holland@sifive.com
Subject: Re: [PATCH v7 1/4] dt-bindings: soc: sophgo: Add Sophgo system control module
Date: Wed, 10 Jan 2024 08:44:26 +0800 [thread overview]
Message-ID: <MA0P287MB28223C0D5BD8E2A6A042A7BEFE692@MA0P287MB2822.INDP287.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <60abfdcc-3d61-4df1-b77b-23d4a5d26a46@linaro.org>
On 2024/1/9 16:56, Krzysztof Kozlowski wrote:
> On 09/01/2024 09:52, Chen Wang wrote:
>> On 2024/1/9 3:36, Krzysztof Kozlowski wrote:
>>> On 08/01/2024 08:20, Chen Wang wrote:
>>>> On 2024/1/8 15:03, Krzysztof Kozlowski wrote:
>>>>> On 08/01/2024 07:48, Chen Wang wrote:
>>>>>> From: Chen Wang <unicorn_wang@outlook.com>
>>>>>>
>>>>>> Add documentation to describe Sophgo System Controller for SG2042.
>>>>>>
>>>>>> Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
>>>>>> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
>>>>>> ---
>>>>>> .../soc/sophgo/sophgo,sg2042-sysctrl.yaml | 34 +++++++++++++++++++
>>>>>> 1 file changed, 34 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..1ec1eaa55598
>>>>>> --- /dev/null
>>>>>> +++ b/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-sysctrl.yaml
>>>>>> @@ -0,0 +1,34 @@
>>>>>> +# 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 controller
>>>>>> +
>>>>>> +maintainers:
>>>>>> + - Chen Wang <unicorn_wang@outlook.com>
>>>>>> +
>>>>>> +description:
>>>>>> + The Sophgo SG2042 SoC system controller provides register information such
>>>>>> + as offset, mask and shift that can be used by other modules, such as clocks.
>>>>> "offset, mask and shift" is not a register information stored in
>>>>> syscons. Are you really sure, that your system controller hardware
>>>>> stores offsets of some other registers?
>>>>>
>>>>> Show as some example of such offsets, masks and shifts provided by this
>>>>> hardware.
>>>> The system control module is defined here:
>>>> https://github.com/sophgo/sophgo-doc/blob/main/SG2042/TRM/source/system-control.rst.
>>>> It contains some registers related to pll and gates.
>>> I do not see there registers providing shifts and offsets... just values.
>>>
>>>> Some other clocks registars are defined in
>>>> https://github.com/sophgo/sophgo-doc/blob/main/SG2042/TRM/source/clock.rst.
>>>>
>>>> memory-map is defined in
>>>> https://github.com/sophgo/sophgo-doc/blob/main/SG2042/TRM/source/mmap.rst
>>> Please fix the wording because it does not make sense. System controller
>>> does not provide register information. Your datasheet provides register
>>> information.
>> Could it be that what I said "that can be used by other modules, such as
> modules as Linux modules should not be involved in this description.
>
>> clocks." may cause misunderstanding. I plan to change it to "The Sophgo
>> SG2042 SoC system controller provides register information such as
>> offset, mask and shift to configure related modules such as clock." Is
>> this better?
>>
> Still does not make sense. To provide "offset" means that some other
> hardware reads sophgo module to get the value of offset. That's not the
> case here.
I'm probably starting to understand what you mean. How about changing it
to the following?
The Sophgo system controller is a registers block, providing multiple
low level platform functions like chip configuration, clock control, etc.
>
> Best regards,
> Krzysztof
>
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next prev parent reply other threads:[~2024-01-10 0:45 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-08 6:47 [PATCH v7 0/4] riscv: sophgo: add clock support for sg2042 Chen Wang
2024-01-08 6:48 ` [PATCH v7 1/4] dt-bindings: soc: sophgo: Add Sophgo system control module Chen Wang
2024-01-08 7:03 ` Krzysztof Kozlowski
2024-01-08 7:20 ` Chen Wang
2024-01-08 19:36 ` Krzysztof Kozlowski
2024-01-09 8:26 ` Chen Wang
2024-01-09 8:52 ` Chen Wang
2024-01-09 8:56 ` Krzysztof Kozlowski
2024-01-10 0:44 ` Chen Wang [this message]
2024-01-10 7:24 ` Krzysztof Kozlowski
2024-01-08 6:49 ` [PATCH v7 2/4] dt-bindings: clock: sophgo: support SG2042 Chen Wang
2024-01-08 7:04 ` Krzysztof Kozlowski
2024-01-10 0:53 ` Chen Wang
2024-01-10 14:42 ` Conor Dooley
2024-01-11 7:51 ` Chen Wang
2024-01-11 8:00 ` Chen Wang
2024-01-11 16:58 ` Conor Dooley
2024-01-12 0:08 ` Chen Wang
2024-01-12 7:42 ` Conor Dooley
2024-01-12 8:27 ` Chen Wang
2024-01-12 8:35 ` Chen Wang
2024-01-12 8:38 ` Krzysztof Kozlowski
2024-01-12 19:35 ` Samuel Holland
2024-01-13 1:15 ` Chen Wang
2024-01-08 6:49 ` [PATCH v7 3/4] clk: sophgo: Add SG2042 clock generator driver Chen Wang
2024-01-08 6:49 ` [PATCH v7 4/4] riscv: dts: add clock generator for Sophgo SG2042 SoC Chen Wang
2024-01-10 14:13 ` Conor Dooley
2024-01-11 7:55 ` Chen Wang
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