linux-kernel - Re: [PATCH v6 1/4] dt-bindings: clock: sophgo: Add clock controller of SG2000 series SoC

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Date: Tue, 16 Jan 2024 08:27:59 +0800
From: Inochi Amaoto <inochiama@...look.com>
To: Conor Dooley <conor@...nel.org>
Cc: Inochi Amaoto <inochiama@...look.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chao Wei <chao.wei@...hgo.com>,
	Chen Wang <unicorn_wang@...look.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Jisheng Zhang <jszhang@...nel.org>,
	Liu Gui <kenneth.liu@...hgo.com>,
	Jingbao Qiu <qiujingbao.dlmu@...il.com>,
	dlan@...too.org,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v6 1/4] dt-bindings: clock: sophgo: Add clock controller of SG2000 series SoC

>On Sun, Jan 14, 2024 at 12:16:58PM +0800, Inochi Amaoto wrote:
>> SG2000 series SoC has the same clock as CV1810 series, but the clock
>> related to A53 is functional in SG2000 series. So a new compatible
>> string is needed for the new SoC.
>>
>> Add definition for the clock controller of the SG2000 series SoC.
>>
>> Signed-off-by: Inochi Amaoto <inochiama@...look.com>
>> Link: https://github.com/sophgo/sophgo-doc/releases/tag/sg2000-datasheet-v1.0-alpha
>> ---
>>  Documentation/devicetree/bindings/clock/sophgo,cv1800-clk.yaml | 3 ++-
>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/clock/sophgo,cv1800-clk.yaml b/Documentation/devicetree/bindings/clock/sophgo,cv1800-clk.yaml
>> index c1dc24673c0d..59ef41adb539 100644
>> --- a/Documentation/devicetree/bindings/clock/sophgo,cv1800-clk.yaml
>> +++ b/Documentation/devicetree/bindings/clock/sophgo,cv1800-clk.yaml
>> @@ -4,7 +4,7 @@
>>  $id: http://devicetree.org/schemas/clock/sophgo,cv1800-clk.yaml#
>>  $schema: http://devicetree.org/meta-schemas/core.yaml#
>>
>> -title: Sophgo CV1800 Series Clock Controller
>> +title: Sophgo CV1800/SG2000 Series Clock Controller
>>
>>  maintainers:
>>    - Inochi Amaoto <inochiama@...look.com>
>> @@ -14,6 +14,7 @@ properties:
>>      enum:
>>        - sophgo,cv1800-clk
>>        - sophgo,cv1810-clk
>> +      - sophgo,sg2000-clk
>
>I recall before you mentioned that the Sophgo folks were considering
>renaming one of their devices. Is the sg2000 the renamed one, or a
>different chip?
>
>Thanks,
>Conor.

Hi Conor,

The sg2000/sg2002 SoCs have one A53 core which cv1812/cv1813 SoCs
don't have. I prefer sg2000/sg2002 are different chips, or at least
an enhanced version of existed cv1812/cv1813. It is not a simple
rename.

For this patch, the sg2000 doesn't need to disable A53 related clocks
like cv18xx series. So this compatible is needed to bind to this new
logic.

Thanks,
Inochi