linux-kernel - Re: [PATCH] ARM: shmobile: compile drivers/sh for CONFIG_ARCH_SHMOBILE

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Message-ID: <2820428.J065BbN1jW@avalon>
Date:	Sun, 12 Jan 2014 22:54:15 +0100
From:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:	Ben Dooks <ben.dooks@...ethink.co.uk>
Cc:	linux-kernel@...ts.codethink.co.uk,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Linus SH list <linux-sh@...r.kernel.org>,
	Simon Horman <horms@...ge.net.au>,
	Magnus Damm <magnus.damm@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] ARM: shmobile: compile drivers/sh for CONFIG_ARCH_SHMOBILE_MULTI

Hi Ben,

Thank you for the patch.

On Saturday 11 January 2014 13:06:29 Ben Dooks wrote:
> If the kernel is built to support multi-arm configurmation with shmobile
> support built in, then the drivers/sh is not built. This contains drivers
> that are essential to devices support by that configuration, including the
> PM runtime code in drivers/sh/pm_runtime.c (which implicitly enables the
> bus clocks for all devices).
> 
> If CONFIG_ARCH_SHMOBILE_MULTI then build the drivers/sh directory,
> but ensure that bits that may conflict (drivers/sh/clk if the common
> clock framework is not enabled) are built.
> 
> The ARCH_SHMOBILE_MULTI was added by efacfce5f8a ("ARM: shmobile: Introduce
> ARCH_SHMOBILE_MULTI") but this has only just recently been found due to
> building device-tree only kernels.
> 
> Cc: Linux Kernel list <linux-kernel@...r.kernel.org>
> Cc: Linus SH list <linux-sh@...r.kernel.org>
> Cc: Simon Horman <horms@...ge.net.au>
> Cc: Magnus Damm <magnus.damm@...il.com>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Ben Dooks <ben.dooks@...ethink.co.uk>
> ---
>  drivers/Makefile    | 1 +
>  drivers/sh/Makefile | 3 +++
>  2 files changed, 4 insertions(+)
> 
> diff --git a/drivers/Makefile b/drivers/Makefile
> index 8e3b8b0..abc4744 100644
> --- a/drivers/Makefile
> +++ b/drivers/Makefile
> @@ -118,6 +118,7 @@ obj-$(CONFIG_SGI_SN)		+= sn/
>  obj-y				+= firmware/
>  obj-$(CONFIG_CRYPTO)		+= crypto/
>  obj-$(CONFIG_SUPERH)		+= sh/
> +obj-$(CONFIG_ARCH_SHMOBILE_MULTI)	+= sh/
>  obj-$(CONFIG_ARCH_SHMOBILE_LEGACY)	+= sh/
>  ifndef CONFIG_ARCH_USES_GETTIMEOFFSET
>  obj-y				+= clocksource/
> diff --git a/drivers/sh/Makefile b/drivers/sh/Makefile
> index fc67f56..86604a5 100644
> --- a/drivers/sh/Makefile
> +++ b/drivers/sh/Makefile
> @@ -3,7 +3,10 @@
>  #
>  obj-y	:= intc/

Is intc needed as well ?

> 
> +ifeq ($(CONFIG_COMMON_CLK),n)
>  obj-$(CONFIG_HAVE_CLK)		+= clk/
> +endif
> +
>  obj-$(CONFIG_MAPLE)		+= maple/
>  obj-$(CONFIG_SUPERHYWAY)	+= superhyway/
-- 
Regards,

Laurent Pinchart

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