linux-kernel - Re: [linux-sunxi] Re: [PATCH v6 2/2] media: V3s: Add support for Allwinner CSI.

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Date:   Mon, 29 Jan 2018 09:16:21 +0100
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Yong <yong.deng@...ewell.com>
Cc:     kbuild test robot <lkp@...el.com>, kbuild-all@...org,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Chen-Yu Tsai <wens@...e.org>,
        "David S. Miller" <davem@...emloft.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Hugues Fruchet <hugues.fruchet@...com>,
        Yannick Fertre <yannick.fertre@...com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Arnd Bergmann <arnd@...db.de>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Ramesh Shanmugasundaram <ramesh.shanmugasundaram@...renesas.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Rick Chang <rick.chang@...iatek.com>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com, megous@...ous.com
Subject: Re: [linux-sunxi] Re: [PATCH v6 2/2] media: V3s: Add support for
 Allwinner CSI.

Hi,

On Sun, Jan 28, 2018 at 10:19:03AM +0800, Yong wrote:
> Hi Maxime,
> 
> On Fri, 26 Jan 2018 09:10:00 +0100
> Maxime Ripard <maxime.ripard@...e-electrons.com> wrote:
> 
> > On Fri, Jan 26, 2018 at 11:00:41AM +0800, Yong wrote:
> > > Hi Maxime,
> > > 
> > > On Fri, 26 Jan 2018 09:46:58 +0800
> > > Yong <yong.deng@...ewell.com> wrote:
> > > 
> > > > Hi Maxime,
> > > > 
> > > > Do you have any experience in solving this problem?
> > > > It seems the PHYS_OFFSET maybe undeclared when the ARCH is not arm.
> > > 
> > > Got it.
> > > Should I add 'depends on ARM' in Kconfig?
> > 
> > Yes, or even better a depends on MACH_SUNXI :)
> 
> Do you mean ARCH_SUNXI?

Yeah, sorry :)

> ARCH_SUNXI is alreay there. In the early version, my Kconfig is like this:
> 
> 	depends on ARCH_SUNXI
> 
> But Hans suggest me to change this to:
> 
> 	depends on ARCH_SUNXI || COMPILE_TEST
> 
> to allow this driver to be compiled on e.g. Intel for compile testing.
> 
> Should we get rid of COMPILE_TEST?

Yes, it cannot be compiled as is on anything but ARM and a few
architectures. Or maybe something like || (COMPILE_TEST && ARM) if
that makes sense?

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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