linux-kernel - Re: [PATCH 4/5] ARM: Add basic support for EcoNet EN7523 SoC

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Message-ID: <d5498cc1-f700-998f-4e98-918081f2ac66@phrozen.org>
Date:   Fri, 30 Jul 2021 17:15:40 +0200
From:   John Crispin <john@...ozen.org>
To:     Arnd Bergmann <arnd@...db.de>, Bert Vermeulen <bert@...t.com>
Cc:     DTML <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Russell King <linux@...linux.org.uk>,
        Linus Walleij <linus.walleij@...aro.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Ard Biesheuvel <ardb@...nel.org>,
        YiFei Zhu <yifeifz2@...inois.edu>,
        Mike Rapoport <rppt@...nel.org>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Felix Fietkau <nbd@....name>
Subject: Re: [PATCH 4/5] ARM: Add basic support for EcoNet EN7523 SoC


On 30.07.21 16:48, Arnd Bergmann wrote:
> Given how closely related this probably is to MT7623/MT7622, should this
> perhaps just be part of arch/arm/mach-mediatek? According to
> https://wikidevi.wi-cat.ru/MediaTek#xPON, the older (mips based) MT752x
> chips are apparently just rebranded to EN752x after the business unit
> was spun off, but I guess they are still in the same family.

Hi,

ECNT (what was once known as trendchip) is now a subsidary of MTK (and 
not a BU if I am understanding it correctly).

the EN7523 is rather similar to the MT7622 for some parts, other parts 
(spi, flash, wdt, gpio, .. drivers all needed to be rewritten and will 
be part of the next series).

the older MIPS silicon shares almost no IP with the current ARM silicon.

not really my call to decide which folder this should live in. it seemed 
natural to just give it its own folder, as ECNT is not a BU of MTK.

we can change that however if required.

     John