linux-kernel - Re: [PATCH v8 2/7] interconnect: Add generic interconnect driver for Exynos SoCs

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Date:   Wed, 4 Nov 2020 15:06:16 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Sylwester Nawrocki <s.nawrocki@...sung.com>
Cc:     georgi.djakov@...aro.org, cw00.choi@...sung.com,
        devicetree@...r.kernel.org, robh+dt@...nel.org,
        a.swigon@...sung.com, myungjoo.ham@...sung.com,
        inki.dae@...sung.com, sw0312.kim@...sung.com,
        b.zolnierkie@...sung.com, m.szyprowski@...sung.com,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v8 2/7] interconnect: Add generic interconnect driver for
 Exynos SoCs

On Wed, Nov 04, 2020 at 02:22:37PM +0100, Sylwester Nawrocki wrote:
> On 04.11.2020 13:37, Krzysztof Kozlowski wrote:
> > On Wed, Nov 04, 2020 at 11:36:52AM +0100, Sylwester Nawrocki wrote:
> 
> >> diff --git a/drivers/interconnect/Makefile b/drivers/interconnect/Makefile
> >> index d203520..c2f9e9d 100644
> >> --- a/drivers/interconnect/Makefile
> >> +++ b/drivers/interconnect/Makefile
> >> @@ -6,3 +6,4 @@ icc-core-objs				:= core.o bulk.o
> >>  obj-$(CONFIG_INTERCONNECT)		+= icc-core.o
> >>  obj-$(CONFIG_INTERCONNECT_IMX)		+= imx/
> >>  obj-$(CONFIG_INTERCONNECT_QCOM)		+= qcom/
> >> +obj-$(CONFIG_INTERCONNECT_SAMSUNG)	+= samsung/
> >> \ No newline at end of file
> > 
> > This needs a fix.
> 
> Corrected, thanks for pointing out.
>  
> >> diff --git a/drivers/interconnect/samsung/Kconfig b/drivers/interconnect/samsung/Kconfig
> >> new file mode 100644
> >> index 0000000..508ed64
> >> --- /dev/null
> >> +++ b/drivers/interconnect/samsung/Kconfig
> >> @@ -0,0 +1,13 @@
> >> +# SPDX-License-Identifier: GPL-2.0-only
> >> +config INTERCONNECT_SAMSUNG
> >> +	bool "Samsung interconnect drivers"
> > 
> > "Samsung SoC interconnect drivers"
> 
> Changed.
> 
> >> +	depends on ARCH_EXYNOS || COMPILE_TEST
> > 
> > Don't the depend on INTERCONNECT?
> 
> This file gets included only if INTERCONNECT is enabled, see
> higher level Kconfig file.

I missed the include part, looks good.

>  
> >> +	help
> >> +	  Interconnect drivers for Samsung SoCs.
> >> +
> >> +
> > 
> > One line break
> 
> Fixed.
> 
> >> +config INTERCONNECT_EXYNOS
> >> +	tristate "Exynos generic interconnect driver"
> >> +	depends on INTERCONNECT_SAMSUNG
> > 
> > How about:
> > default y if ARCH_EXYNOS
> 
> OK, added.
> 
> >> +	help
> >> +	  Generic interconnect driver for Exynos SoCs.
> >> diff --git a/drivers/interconnect/samsung/Makefile b/drivers/interconnect/samsung/Makefile
> >> new file mode 100644
> >> index 0000000..e19d1df
> >> --- /dev/null
> >> +++ b/drivers/interconnect/samsung/Makefile
> >> @@ -0,0 +1,4 @@
> >> +# SPDX-License-Identifier: GPL-2.0
> >> +exynos-interconnect-objs		:= exynos.o
> > 
> > What is this line for?
>  
> That allows to change the module name, so it's exynos-interconnect.ko
> rather than just exynos.c. It's done similarly for other SoCs in 
> the subsystem.

Thanks, makes sense.

Best regards,
Krzysztof