linux-kernel - Re: [RFC PATCH v2 03/14] ARM: sunxi: add Allwinner ARMv5 SoCs

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Date:   Tue, 20 Nov 2018 09:42:45 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Mesih Kilinc <mesihkilinc@...il.com>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-sunxi@...glegroups.com,
        Chen-Yu Tsai <wens@...e.org>,
        Russell King <linux@...linux.org.uk>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Marc Zyngier <marc.zyngier@....com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Icenowy Zheng <icenowy@...c.io>,
        Rob Herring <robh+dt@...nel.org>,
        Julian Calaby <julian.calaby@...il.com>
Subject: Re: [RFC PATCH v2 03/14] ARM: sunxi: add Allwinner ARMv5 SoCs

On Sun, Nov 18, 2018 at 05:17:02PM +0300, Mesih Kilinc wrote:
> Add option for Allwinner ARMv5 SoCs and SoC F1C100s (which has a die
> used for many new F-series products, including F1C100A, F1C100s, F1C200s,
> F1C500, F1C600).
> 
> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
> Signed-off-by: Mesih Kilinc <mesihkilinc@...il.com>
> ---
>  arch/arm/mach-sunxi/Kconfig    | 14 +++++++++++++-
>  arch/arm/mach-sunxi/Makefile   |  1 +
>  arch/arm/mach-sunxi/sunxi_v5.c | 22 ++++++++++++++++++++++
>  3 files changed, 36 insertions(+), 1 deletion(-)
>  create mode 100644 arch/arm/mach-sunxi/sunxi_v5.c
> 
> diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
> index 5db17ec..066644c 100644
> --- a/arch/arm/mach-sunxi/Kconfig
> +++ b/arch/arm/mach-sunxi/Kconfig
> @@ -1,6 +1,6 @@
>  menuconfig ARCH_SUNXI
>  	bool "Allwinner SoCs"
> -	depends on ARCH_MULTI_V7
> +	depends on ARCH_MULTI_V5 || ARCH_MULTI_V7
>  	select ARCH_HAS_RESET_CONTROLLER
>  	select CLKSRC_MMIO
>  	select GENERIC_IRQ_CHIP
> @@ -64,4 +64,16 @@ config ARCH_SUNXI_MC_SMP
>  
>  endif
>  
> +if ARCH_MULTI_V5
> +
> +config ARCH_SUNXI_V5
> +	bool
> +	select SUN4I_TIMER

If SUN4I_TIMER is needed both by the armv5 and armv7 cores, why did we
need to move it out of ARCH_SUNXI?

> +config MACH_SUNIV
> +	bool "Allwinner new F-series (suniv) SoCs support"

I would drop the "new" here.

> +++ b/arch/arm/mach-sunxi/sunxi_v5.c
> @@ -0,0 +1,22 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Device Tree support for Allwinner F series SoCs
> + *
> + * Copyright (C) 2017 Icenowy Zheng <icenowy@...c.io>
> + * Copyright (C) 2018 Mesih Kilinc <mesihkilinc@...il.com>
> + *
> + * This file is licensed under the terms of the GNU General Public
> + * License version 2.  This program is licensed "as is" without any
> + * warranty of any kind, whether express or implied.
> + */
> +
> +#include <asm/mach/arch.h>
> +
> +static const char * const suniv_board_dt_compat[] = {
> +	"allwinner,suniv-f1c100s",
> +	NULL,
> +};
> +
> +DT_MACHINE_START(SUNXI_DT, "Allwinner suniv Family")
> +	.dt_compat	= suniv_board_dt_compat,
> +MACHINE_END

Do we really need a separate file for that?

Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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