linux-kernel - Re: [PATCH v4 3/4] clk: sophgo: Add SG2042 clock generator driver

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Date:   Wed, 6 Dec 2023 09:35:29 +0800
From:   Chen Wang <unicorn_wang@...look.com>
To:     Inochi Amaoto <inochiama@...look.com>
Cc:     Chen Wang <unicornxw@...il.com>, aou@...s.berkeley.edu,
        chao.wei@...hgo.com, conor@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, mturquette@...libre.com,
        palmer@...belt.com, paul.walmsley@...ive.com,
        richardcochran@...il.com, robh+dt@...nel.org, sboyd@...nel.org,
        devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        haijiao.liu@...hgo.com, xiaoguang.xing@...hgo.com,
        guoren@...nel.org, jszhang@...nel.org, samuel.holland@...ive.com
Subject: Re: [PATCH v4 3/4] clk: sophgo: Add SG2042 clock generator driver


On 2023/12/5 14:34, Inochi Amaoto wrote:
>> On 2023/12/5 9:13, Inochi Amaoto wrote:
>>>> From: Chen Wang <unicorn_wang@...look.com>
>>>>
>>>> Add a driver for the SOPHGO SG2042 clock generator.
>>>>
>>>> Signed-off-by: Chen Wang <unicorn_wang@...look.com>
>>>> ---
>>>> MAINTAINERS                            |    7 +
>>>> drivers/clk/Kconfig                    |    1 +
>>>> drivers/clk/Makefile                   |    1 +
>>>> drivers/clk/sophgo/Kconfig             |    8 +
>>>> drivers/clk/sophgo/Makefile            |    2 +
>>>> drivers/clk/sophgo/clk-sophgo-sg2042.c | 1371 ++++++++++++++++++++++++
>>>> drivers/clk/sophgo/clk-sophgo-sg2042.h |  226 ++++
>>>> 7 files changed, 1616 insertions(+)
>>>> create mode 100644 drivers/clk/sophgo/Kconfig
>>>> create mode 100644 drivers/clk/sophgo/Makefile
>>>> create mode 100644 drivers/clk/sophgo/clk-sophgo-sg2042.c
>>>> create mode 100644 drivers/clk/sophgo/clk-sophgo-sg2042.h
>>>>
>>>> diff --git a/MAINTAINERS b/MAINTAINERS
>>>> index 97f51d5ec1cf..c9c75468f2cb 100644
>>>> --- a/MAINTAINERS
>>>> +++ b/MAINTAINERS
>>>> @@ -20269,6 +20269,13 @@ S:    Maintained
>>>> F:    arch/riscv/boot/dts/sophgo/
>>>> F:    Documentation/devicetree/bindings/riscv/sophgo.yaml
>>>>
>>>> +SOPHGO CLOCK DRIVER
>>>> +M:    Chen Wang <unicorn_wang@...look.com>
>>>> +S:    Maintained
>>>> +F:    Documentation/devicetree/bindings/clock/sophgo/
>>>> +F:    drivers/clk/sophgo/
>>>> +F:    include/dt-bindings/clock/sophgo,sg2042-clkgen.h
>>>> +
>>>> SOUND
>>>> M:    Jaroslav Kysela <perex@...ex.cz>
>>>> M:    Takashi Iwai <tiwai@...e.com>
>>>> diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
>>>> index c30d0d396f7a..514343934fda 100644
>>>> --- a/drivers/clk/Kconfig
>>>> +++ b/drivers/clk/Kconfig
>>>> @@ -499,6 +499,7 @@ source "drivers/clk/rockchip/Kconfig"
>>>> source "drivers/clk/samsung/Kconfig"
>>>> source "drivers/clk/sifive/Kconfig"
>>>> source "drivers/clk/socfpga/Kconfig"
>>>> +source "drivers/clk/sophgo/Kconfig"
>>>> source "drivers/clk/sprd/Kconfig"
>>>> source "drivers/clk/starfive/Kconfig"
>>>> source "drivers/clk/sunxi/Kconfig"
>>>> diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
>>>> index ed71f2e0ee36..aa5d2cf0b6a6 100644
>>>> --- a/drivers/clk/Makefile
>>>> +++ b/drivers/clk/Makefile
>>>> @@ -119,6 +119,7 @@ obj-$(CONFIG_ARCH_ROCKCHIP)        += rockchip/
>>>> obj-$(CONFIG_COMMON_CLK_SAMSUNG)    += samsung/
>>>> obj-$(CONFIG_CLK_SIFIVE)        += sifive/
>>>> obj-y                    += socfpga/
>>>> +obj-$(CONFIG_ARCH_SOPHGO)        += sophgo/
>>>> obj-$(CONFIG_PLAT_SPEAR)        += spear/
>>>> obj-y                    += sprd/
>>>> obj-$(CONFIG_ARCH_STI)            += st/
>>>> diff --git a/drivers/clk/sophgo/Kconfig b/drivers/clk/sophgo/Kconfig
>>>> new file mode 100644
>>>> index 000000000000..b0fbe4499870
>>>> --- /dev/null
>>>> +++ b/drivers/clk/sophgo/Kconfig
>>>> @@ -0,0 +1,8 @@
>>>> +# SPDX-License-Identifier: GPL-2.0
>>>> +
>>>> +config CLK_SOPHGO_SG2042
>>>> +    bool "Sophgo SG2042 clock support"
>>>> +    depends on ARCH_SOPHGO || COMPILE_TEST
>>>> +    default ARCH_SOPHGO
>>>> +    help
>>>> +      Say yes here to support the clock controller on the Sophgo SG2042 SoC.
>>> Please add RISCV to its depends. Not all the sophgo SoCs are in the RISC-V
>>> platform, Some are arm chips. It is not good to build this driver
>>> in that arch.
>> ARCH_SOPHGO is only defined in RISC-V arch, so I think RISCV should not be needed as depends.
> It needs for the SG200X. which has a arm core. Maybe we should left it now
> and add this in the future.
It sounds like a new product, let's consider it when we get the real 
hardware.
>>> Also, the condition ARCH_SOPHGO is duplicate in the Makefile. Please
>>> remove one of them.
>> Don't undestand your question "the condition ARCH_SOPHGO is duplicate in the Makefile ",  I think you are talking about Kconifg, what Makefile are you talking about?
>>
> I mean your change in drivers/clk/Makefile.

Yes. I see it now. It's really a problem and redundant, I will fix it, 
thanks for your carefully check.

......