From mboxrd@z Thu Jan 1 00:00:00 1970 From: f.fainelli@gmail.com (Florian Fainelli) Date: Tue, 09 Dec 2014 19:20:00 -0800 Subject: [PATCH v2 3/4] ARM: mach-bcm: Enable I2C support for iProc In-Reply-To: <5487AEF0.5010404@broadcom.com> References: <1418177893-22094-1-git-send-email-rjui@broadcom.com> <1418177893-22094-4-git-send-email-rjui@broadcom.com> <5487ADE5.4070705@gmail.com> <5487AEF0.5010404@broadcom.com> Message-ID: <5487BBE0.4000701@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 09/12/14 18:24, Ray Jui wrote: > > > On 12/9/2014 6:20 PM, Florian Fainelli wrote: >> On 09/12/14 18:18, Ray Jui wrote: >>> Enable I2C driver support for Broadcom iProc family of SoCs by >>> selecting I2C_BCM_IPROC >>> >>> Signed-off-by: Ray Jui >>> Reviewed-by: Scott Branden >>> --- >>> arch/arm/mach-bcm/Kconfig | 1 + >>> 1 file changed, 1 insertion(+) >>> >>> diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig >>> index aaeec78..86ee90b 100644 >>> --- a/arch/arm/mach-bcm/Kconfig >>> +++ b/arch/arm/mach-bcm/Kconfig >>> @@ -19,6 +19,7 @@ config ARCH_BCM_IPROC >>> select ARCH_REQUIRE_GPIOLIB >>> select ARM_AMBA >>> select PINCTRL >>> + select I2C_BCM_IPROC >> >> One way to avoid having to modify mach-bcm/Kconfig would be to have your >> i2c driver Kconfig do this: >> >> default ARCH_BCM_IPROC >> >> would that work? >> > Yes. So in which case it is better to select a driver from the > architecture specific Kconfig? I suppose if your driver/subsystem is critical for system boot, like powering a regulator or something that has a critical purpose, a select is probably more appropriate here. If this is just exposing non-critical devices, I would go with a depends on/default at the driver Kconfig level. This is just how I see things, others would definitively have a different view. > >>> help >>> This enables support for systems based on Broadcom IPROC >>> architected SoCs. >>> The IPROC complex contains one or more ARM CPUs along with >>> common >>> >>