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

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Date:   Wed, 21 Nov 2018 07:36:38 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     linux-arm-kernel@...ts.infradead.org,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Mesih Kilinc <mesihkilinc@...il.com>
CC:     devicetree@...r.kernel.org, Marc Zyngier <marc.zyngier@....com>,
        Julian Calaby <julian.calaby@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-kernel@...r.kernel.org, Russell King <linux@...linux.org.uk>,
        linux-gpio@...r.kernel.org, linux-sunxi@...glegroups.com,
        Rob Herring <robh+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        linux-clk@...r.kernel.org
Subject: Re: [RFC PATCH v2 03/14] ARM: sunxi: add Allwinner ARMv5 SoCs



于 2018年11月20日 GMT+08:00 下午4:42:45, Maxime Ripard <maxime.ripard@...tlin.com> 写到:
>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.

Sorry, but old F-series SoCs are not suniv. They are sunii or sun3i.

>
>> +++ 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