Date: Wed, 13 Dec 2017 09:52:57 +0100
From: Lukasz Majewski <lukma@denx.de>
To: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>,
        Arnd Bergmann <arnd@arndb.de>, Arnd Bergmann <arndbergmann@gmail.com>,
        Hartley Sweeten <hsweeten@visionengravers.com>,
        Russell King <linux@armlinux.org.uk>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        linux-kernel@vger.kernel.org, Olof Johansson <olof@lixom.net>
Subject: Re: [PATCH v5 0/4] ARM: ep93xx: ts72xx: Add support for BK3 board
Message-ID: <20171213095257.5cf424fb@jawa>
In-Reply-To: <1513153607.2439.2.camel@Nokia-N900>
References: <20171116232239.16823-1-lukma@denx.de>
        <20171211233625.5689-1-lukma@denx.de>
        <CACRpkdbCeBCENDcRcYBKTXVNz6H3t=WKHYP8Uf3WJ=Wvtib1Jg@mail.gmail.com>
        <1513153607.2439.2.camel@Nokia-N900>
Organization: denx.de
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Hi Alexander, Linus

> Hello Linus!
>=20
> On Wed Dec 13 08:34:22 2017 Linus Walleij <linus.walleij@linaro.org>
> wrote:
> > On Tue, Dec 12, 2017 at 12:36 AM, Lukasz Majewski <lukma@denx.de>
> > wrote: Out of curiosity: Liebherr is obviously doing heavy-duty
> > industrial control systems. Likewise Hartley is doing similar
> > business over at Vision Engravings.
> >=20
> > Is the situation such that there is a whole bunch of industrial
> > systems out there, in active use and needing future upgrades,
> > that use the EP93xx? =20
>=20
> That's definitely the case. I'm as well aware of several thousands of
> industrial devices which are expected to run 24/7 for the next 5
> years at least. And they are updated from time to time.

I can agree with this statement.=20

>=20
> > Arnd has been nudging me to do DT conversion for EP93xx
> > so if there are many active industrial users of these
> > I should prioritize it, because these things have 20+ years
> > support cycles. =20
>=20
> I'm not sure how important or necessary at all is to change anything
> in these legacy platforms.

+1

>=20
> > We also need to think about upholding support in GCC for
> > ARMv4(t) for the foreseeable future if there is a big web of
> > random deeply embedded systems out there that will need
> > updates. =20
>=20
> But we should definitely preserve at least what we have.

I'm using OE to build toolchain (SDK). I can confirm that gcc 7.2 works
with it.

And yes, armv4 support shall be preserved in GCC ....

>=20
> --
> Alexander.
>=20


Best regards,

Lukasz Majewski

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