linux-kernel - Re: [PATCH 3/3] ARM: imx: add SMP support for i.MX7D

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Date:   Fri, 26 Aug 2016 15:48:08 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     Yongcai Huang <anson.huang@....com>,
        "Russell King - ARM Linux" <linux@...linux.org.uk>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>
Subject: Re: [PATCH 3/3] ARM: imx: add SMP support for i.MX7D

On Friday 26 August 2016, Yongcai Huang wrote:
> > 
> > It's about time iMX folk learned that "imx*" is a SoC and not a CPU.
> > It should be "soc_is_imx7d()" because we're wanting to know whether the
> > SoC is an iMX7D.  The CPU is a _Cortex-A7_.
> 
> Agree, I will add a new patch in this patch set to replace all the cpu_is_xxx with
> Soc_is_xxx.

I recently did a patch to remove all the cpu_is_mx{1,2,3,5}* macros, which ended up
making the code simpler and more readable in most places. I think we can
do the same for the cpu_is_imx{6,7}* macros.

In this instance, the easy alternative is to have a separate smp_operation
structure for imx7d rather than using the same as imx6 and then figuring
out at runtime which one you have.

	Arnd