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From: Daniel Palmer <daniel@0x0f.com>
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>,
	"Uwe Kleine-König" <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>
Subject: Re: [PATCH v2 4/5] ARM: Add basic support for Airoha EN7523 SoC
Date: Tue, 7 Sep 2021 19:48:02 +0900	[thread overview]
Message-ID: <CAFr9PXmCKPfdHnHU7=ALh=j2SDf71ibd8kEnLTK6aPN1vmQVdg@mail.gmail.com> (raw)
In-Reply-To: <20210907102722.47543-5-bert@biot.com>

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

WARNING: multiple messages have this Message-ID (diff)
From: Daniel Palmer <daniel@0x0f.com>
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>,
	"Uwe Kleine-König" <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>
Subject: Re: [PATCH v2 4/5] ARM: Add basic support for Airoha EN7523 SoC
Date: Tue, 7 Sep 2021 19:48:02 +0900	[thread overview]
Message-ID: <CAFr9PXmCKPfdHnHU7=ALh=j2SDf71ibd8kEnLTK6aPN1vmQVdg@mail.gmail.com> (raw)
In-Reply-To: <20210907102722.47543-5-bert@biot.com>

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

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2021-09-07 10:45 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-07 10:27 [PATCH v2 0/5] Add support for Airoha EN7523 SoC Bert Vermeulen
2021-09-07 10:27 ` Bert Vermeulen
2021-09-07 10:27 ` [PATCH v2 1/5] dt-bindings: Add vendor prefix for Airoha Bert Vermeulen
2021-09-07 10:27   ` Bert Vermeulen
2021-09-07 11:13   ` Krzysztof Kozlowski
2021-09-07 11:13     ` Krzysztof Kozlowski
2021-09-07 10:27 ` [PATCH v2 2/5] dt-bindings: arm: airoha: Add binding for EN7523 SoC and EVB Bert Vermeulen
2021-09-07 10:27   ` Bert Vermeulen
2021-09-07 10:27 ` [PATCH v2 3/5] ARM: dts: Add basic support for Airoha EN7523 Bert Vermeulen
2021-09-07 10:27   ` Bert Vermeulen
2021-09-07 10:27 ` [PATCH v2 4/5] ARM: Add basic support for Airoha EN7523 SoC Bert Vermeulen
2021-09-07 10:27   ` Bert Vermeulen
2021-09-07 10:48   ` Daniel Palmer [this message]
2021-09-07 10:48     ` Daniel Palmer
2021-09-07 11:51     ` Arnd Bergmann
2021-09-07 11:51       ` Arnd Bergmann
2021-09-07 12:27       ` Daniel Palmer
2021-09-07 12:27         ` Daniel Palmer
2021-09-07 14:11         ` Arnd Bergmann
2021-09-07 14:11           ` Arnd Bergmann
2021-09-07 14:32           ` Daniel Palmer
2021-09-07 14:32             ` Daniel Palmer
2021-09-07 15:22             ` Arnd Bergmann
2021-09-07 15:22               ` Arnd Bergmann
2021-09-07 10:27 ` [PATCH v2 5/5] ARM: multi_v7_defconfig: Add " Bert Vermeulen
2021-09-07 10:27   ` Bert Vermeulen
2021-09-07 10:39   ` Dmitry Osipenko
2021-09-07 10:39     ` Dmitry Osipenko
2021-09-07 10:41     ` Bert Vermeulen
2021-09-07 10:41       ` Bert Vermeulen
2021-09-07 11:03       ` Dmitry Osipenko
2021-09-07 11:03         ` Dmitry Osipenko

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