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From:   Daniel Palmer <daniel@0x0f.com>
Date:   Tue, 7 Sep 2021 19:48:02 +0900
Message-ID: <CAFr9PXmCKPfdHnHU7=ALh=j2SDf71ibd8kEnLTK6aPN1vmQVdg@mail.gmail.com>
Subject: Re: [PATCH v2 4/5] ARM: Add basic support for Airoha EN7523 SoC
To:     Bert Vermeulen <bert@biot.com>
Cc:     Russell King <linux@armlinux.org.uk>,
        Arnd Bergmann <arnd@arndb.de>,
        Linus Walleij <linus.walleij@linaro.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        Anshuman Khandual <anshuman.khandual@arm.com>,
        Marc Zyngier <maz@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        John Crispin <john@phrozen.org>,
        Ard Biesheuvel <ardb@kernel.org>,
        YiFei Zhu <yifeifz2@illinois.edu>,
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        <u.kleine-koenig@pengutronix.de>, Mike Rapoport <rppt@kernel.org>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        DTML <devicetree@vger.kernel.org>
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Hi Bert,

On Tue, 7 Sept 2021 at 19:30, Bert Vermeulen <bert@biot.com> wrote:
>
> From: John Crispin <john@phrozen.org>
>
> EN7523 is an armv7 based silicon used inside broadband access type devices
> such as xPON and xDSL. It shares various silicon blocks with MediaTek
> silicon such as the MT7622.

This is a Cortex A53 isn't it? So it's ARMv8. I thought the issue is
that it's actually a 64bit system but you only have a 32bit
bootloader, firmware etc?

Off-topic but related:  Another MediaTek spin off, SigmaStar, seems to
have done exactly the same thing. Cortex A53 chip running as a 32bit
system to avoid having to fix their software. I'm interested to see if
this makes it into arm or arm64. :)

Cheers,

Daniel