Re: [Buildroot] [PATCH v2 0/2] Add support for Pi5

From: "Yann E. MORIN" <yann.morin.1998@free.fr>
To: "Gaël PORTAY" <gael.portay@rtone.fr>
Cc: Julien Grossholtz <julien.grossholtz@openest.io>,
	Martin Bark <martin@barkynet.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH v2 0/2] Add support for Pi5
Date: Sat, 20 Jan 2024 09:57:46 +0100	[thread overview]
Message-ID: <ZauLCj2SEEeSQIv7@landeda> (raw)
In-Reply-To: <CYJDQOY1OLS2.2VW25BFSDZOVP@rtone.fr>

Gaël, All,

On 2024-01-20 09:10 +0100, Gaël PORTAY spake thusly:
> On Fri Jan 19, 2024 at 9:13 PM CET, Yann E. MORIN wrote:
> > On 2023-12-11 16:59 +0100, Gaël PORTAY spake thusly:
> > > The first patch enables MMU 16K page-size on ARM64 as the Raspberry Pi 5
> > > supports 16K page-size[1].
> > So, unless 16K is a requirement, I think using 4K pages would be better.
> So you are suggesting to have a raspberrypi5_defconfig uses a 4k page
> size in a first place (as bcm2712 works with 4k too).

Yes.

> And to have probably a raspberrypi5-16k_defconfig that will use a 16k
> page size later once BR have enough bits to filter-out external
> toolchains that do not support for 16k page size?

Or just revert the rpi5 defconfig to 16K pages, because then we'd be
protected against a mis-configuration, so all would end well.

Regards,
Yann E. MORIN.

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