From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Date: Mon, 01 Apr 2013 12:50:48 +0000
Subject: Re: [PATCH 3/3 v2] ARM: shmobile: bockw: add SMSC ethernet support
Message-Id: <515982A8.3090307@cogentembedded.com>
List-Id: <linux-sh.vger.kernel.org>
References: <87zjxvewko.wl%kuninori.morimoto.gx@renesas.com>
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 <87bo9z56k8.wl%kuninori.morimoto.gx@renesas.com>
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To: linux-arm-kernel@lists.infradead.org

Hello.

On 01-04-2013 6:27, Kuninori Morimoto wrote:

> This patch adds SMSC ethernet support on Bock-W

> Bock-W SMSC needs FPGA settings which enables interrupt.
> This patch does it on bockw_init() function.
> As notes for future, this FPGA settings should be updated,
> since this FPGA is using cascaded interrupt.
> Current code is assuming that this FPGA interrupt user is only SMSC.
> Becouse of these background, this patch doesn't
> have DT settings

> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> ---
> v1 -> v2

>   - not based on PLATFORM_INFO()

>   arch/arm/boot/dts/r8a7778-bockw.dts  |    2 +-
>   arch/arm/configs/bockw_defconfig     |   34 +++++++++++++++++++++++++++---
>   arch/arm/mach-shmobile/Kconfig       |    1 +
>   arch/arm/mach-shmobile/board-bockw.c |   38 ++++++++++++++++++++++++++++++++++
>   4 files changed, 71 insertions(+), 4 deletions(-)

> diff --git a/arch/arm/boot/dts/r8a7778-bockw.dts b/arch/arm/boot/dts/r8a7778-bockw.dts
> index 735c964..0076b1e 100644
> --- a/arch/arm/boot/dts/r8a7778-bockw.dts
> +++ b/arch/arm/boot/dts/r8a7778-bockw.dts
> @@ -22,7 +22,7 @@
>   	compatible = "renesas,bockw", "renesas,r8a7778";
>
>   	chosen {
> -		bootargs = "console=ttySC0,115200 ignore_loglevel";
> +		bootargs = "console=ttySC0,115200 ignore_loglevel ip=dhcp root=/dev/nfs";
>   	};
>
>   	memory {

    In my opinion, modifying .dts file should be done in a separate patch.

> diff --git a/arch/arm/configs/bockw_defconfig b/arch/arm/configs/bockw_defconfig
> index 6037705..6524cdf 100644
> --- a/arch/arm/configs/bockw_defconfig
> +++ b/arch/arm/configs/bockw_defconfig
> @@ -27,16 +27,40 @@ CONFIG_HIGHMEM=y
>   CONFIG_ZBOOT_ROM_TEXT=0x0
>   CONFIG_ZBOOT_ROM_BSS=0x0
>   CONFIG_ARM_APPENDED_DTB=y
> -CONFIG_CMDLINE="console=ttySC0,115200 ignore_loglevel"
> +CONFIG_CMDLINE="console=ttySC0,115200 ignore_loglevel root=/dev/nfs ip=dhcp"
>   CONFIG_CMDLINE_FORCE=y
>   # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
>   # CONFIG_SUSPEND is not set
> +CONFIG_NET=y
> +CONFIG_UNIX=y
> +CONFIG_INET=y
> +CONFIG_IP_PNP=y
> +CONFIG_IP_PNP_DHCP=y
> +# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
> +# CONFIG_INET_XFRM_MODE_TUNNEL is not set
> +# CONFIG_INET_XFRM_MODE_BEET is not set
> +# CONFIG_INET_LRO is not set
> +# CONFIG_INET_DIAG is not set
> +# CONFIG_IPV6 is not set
>   CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
>   CONFIG_DEVTMPFS=y
>   CONFIG_DEVTMPFS_MOUNT=y
>   # CONFIG_STANDALONE is not set
>   # CONFIG_PREVENT_FIRMWARE_BUILD is not set
>   # CONFIG_FW_LOADER is not set
> +CONFIG_NETDEVICES=y
> +# CONFIG_NET_CADENCE is not set
> +# CONFIG_NET_VENDOR_BROADCOM is not set
> +# CONFIG_NET_VENDOR_CIRRUS is not set
> +# CONFIG_NET_VENDOR_FARADAY is not set
> +# CONFIG_NET_VENDOR_INTEL is not set
> +# CONFIG_NET_VENDOR_MARVELL is not set
> +# CONFIG_NET_VENDOR_MICREL is not set
> +# CONFIG_NET_VENDOR_NATSEMI is not set
> +# CONFIG_NET_VENDOR_SEEQ is not set
> +CONFIG_SMSC911X=y
> +# CONFIG_NET_VENDOR_STMICRO is not set
> +# CONFIG_NET_VENDOR_WIZNET is not set
>   # CONFIG_INPUT is not set
>   # CONFIG_SERIO is not set
>   # CONFIG_VT is not set
> @@ -55,12 +79,16 @@ CONFIG_UIO_PDRV_GENIRQ=y
>   # CONFIG_INOTIFY_USER is not set
>   CONFIG_TMPFS=y
>   # CONFIG_MISC_FILESYSTEMS is not set
> +CONFIG_NFS_FS=y
> +CONFIG_NFS_V3_ACL=y
> +CONFIG_NFS_V4=y
> +CONFIG_NFS_SWAP=y
> +CONFIG_NFS_V4_1=y
> +CONFIG_ROOT_NFS=y
>   # CONFIG_ENABLE_WARN_DEPRECATED is not set
>   # CONFIG_ENABLE_MUST_CHECK is not set
>   # CONFIG_SCHED_DEBUG is not set
>   # CONFIG_DEBUG_BUGVERBOSE is not set
>   # CONFIG_FTRACE is not set
>   # CONFIG_ARM_UNWIND is not set
> -CONFIG_KEYS=y
> -CONFIG_CRYPTO=y
>   CONFIG_AVERAGE=y

    In my opinion, modifying bockw_defconfig should be done in a separate 
patch. Mixing everything up in a signle patch is a bad practice.

WBR, Sergei