linux-kernel - Re: [PATCH] soc: imx: Makefile: only build soc-imx8 when CONFIG

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Date:   Tue, 14 Jan 2020 09:17:51 +0100
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Peng Fan <peng.fan@....com>
Cc:     "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        Abel Vesa <abel.vesa@....com>,
        Leonard Crestez <leonard.crestez@....com>,
        Anson Huang <anson.huang@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] soc: imx: Makefile: only build soc-imx8 when CONFIG_ARM64

On Tue, Jan 14, 2020 at 08:08:45AM +0000, Peng Fan wrote:
> From: Peng Fan <peng.fan@....com>
> 
> Only need to build soc-imx8.c when CONFIG_ARM64 defined,
> no need to build it for CONFIG_ARM32 currently.
> 
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  drivers/soc/imx/Makefile | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile
> index cf9ca42ff739..cfcbc62b11d7 100644
> --- a/drivers/soc/imx/Makefile
> +++ b/drivers/soc/imx/Makefile
> @@ -1,5 +1,7 @@
>  # SPDX-License-Identifier: GPL-2.0-only
>  obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
>  obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o
> +ifdef CONFIG_ARM64
>  obj-$(CONFIG_ARCH_MXC) += soc-imx8.o
> +endif

For earlier SoCs we had kconfig symbols like SOC_IMX25. Actually
SOC_IMX8 would be the right one to decide about soc-imx8.c to be
compiled, it would be easier to read and verify than the suggested
"ARM64 && ARCH_MXC" and it would stay right once NXP presents it's next
64-bit SoC i.MX9.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |