linux-kernel - Re: [PATCH v2 1/3] ARM: qcom: Make an option for qcom clocksource platforms

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Date:	Wed, 25 Nov 2015 23:08:28 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	Andy Gross <agross@...eaurora.org>, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Daniel Lezcano <daniel.lezcano@...aro.org>
Subject: Re: [PATCH v2 1/3] ARM: qcom: Make an option for qcom clocksource platforms

On Wednesday 25 November 2015 13:04:36 Stephen Boyd wrote:
> diff --git a/arch/arm/Makefile b/arch/arm/Makefile
> index 2c2b28ee4811..999d523ac09f 100644
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -148,8 +148,7 @@ textofs-$(CONFIG_PM_H1940)      := 0x00108000
>  ifeq ($(CONFIG_ARCH_SA1100),y)
>  textofs-$(CONFIG_SA1111) := 0x00208000
>  endif
> -textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
> -textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
> +textofs-$(CONFIG_HAVE_CLKSRC_QCOM) := 0x00208000
>  textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
>  
>  # Machine directory name.  This list is sorted alphanumerically
> diff --git a/arch/arm/mach-qcom/Kconfig b/arch/arm/mach-qcom/Kconfig
> index 2256cd1e25d1..35a03967d9c2 100644
> --- a/arch/arm/mach-qcom/Kconfig
> +++ b/arch/arm/mach-qcom/Kconfig
> @@ -10,6 +10,14 @@ menuconfig ARCH_QCOM
>  
>  if ARCH_QCOM
>  
> +config HAVE_CLKSRC_QCOM
> +       bool "Support platforms with qcom clocksource"
> +       default y
> +       select CLKSRC_QCOM
> +       help
> +         Select this option if you want to support platforms
> +         with the qcom clocksource such as MSM8660 and MSM8960.

Hmm, if we use the option for two things, I think it could use
a different identifier and title, as it seems counterintuitive
to make the text offset based on the clocksource driver.

Is there any common way to classify these, e.g. calling them
'pre-2013 models' or 'Snapdragon S4' as a way to identify them?

The way it appears in Kconfig also still needs to reflect how
this is a subset of the supported platforms (as your current
patch does correctly).

	Arnd
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