From: "Pali Rohár" <pali@kernel.org>
To: Arnd Bergmann <arnd@arndb.de>
Cc: "Gregory CLEMENT" <gregory.clement@bootlin.com>,
"Andrew Lunn" <andrew@lunn.ch>, "Marek Behún" <kabel@kernel.org>,
"Linux ARM" <linux-arm-kernel@lists.infradead.org>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] arm64: dts: marvell: armada-37xx: Remap IO space to bus address 0x0
Date: Thu, 10 Mar 2022 11:41:35 +0100 [thread overview]
Message-ID: <20220310104135.licbldjs2dvy2nm4@pali> (raw)
In-Reply-To: <CAK8P3a2Q5fVUMKHz=co0_D5suLBk0rCyGKz3g854fv-HS=G3Sw@mail.gmail.com>
On Thursday 10 March 2022 11:22:38 Arnd Bergmann wrote:
> On Thu, Mar 10, 2022 at 11:09 AM Pali Rohár <pali@kernel.org> wrote:
> > On Thursday 10 March 2022 11:05:00 Gregory CLEMENT wrote:
>
> > >
> > > This patch has been refused by Arnd so I removed it from the mvebu/fixes
> > > branch so you should not apply anything on top of it.
> >
> > Ok, so what is wrong with a change which increase size of IO space to 1 MB?
>
> It should not cause any harm, but there is really no point in this if no known
> devices use more than a few bytes, and Linux only maps the first 64KB of
> the I/O space for each host bridge. I don't actually see where we limit the
> size to 64KB, so maybe that changed recently.
>
> Arnd
Ok. Anyway, I was told that DTS should describe HW properties and not to
be bound with SW implementation or SW limitations, like case here if
Linux SW limits some sizes.
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next prev parent reply other threads:[~2022-03-10 10:42 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-18 21:25 [PATCH] arm64: dts: marvell: armada-37xx: Remap IO space to bus address 0x0 Pali Rohár
2022-02-19 11:34 ` Marek Behún
2022-02-19 21:00 ` Arnd Bergmann
2022-02-28 15:41 ` Gregory CLEMENT
2022-02-28 16:42 ` Gregory CLEMENT
2022-03-01 9:25 ` Pali Rohár
2022-03-02 13:06 ` Andrew Lunn
2022-03-02 13:15 ` Marek Behún
2022-03-02 13:25 ` Marek Behún
2022-03-02 13:25 ` Pali Rohár
2022-03-04 12:44 ` Pali Rohár
2022-03-04 16:30 ` [PATCH v2] " Pali Rohár
2022-03-08 11:41 ` Pali Rohár
2022-03-10 10:05 ` Gregory CLEMENT
2022-03-10 10:09 ` Pali Rohár
2022-03-10 10:22 ` Arnd Bergmann
2022-03-10 10:41 ` Pali Rohár [this message]
2022-03-10 10:23 ` Gregory CLEMENT
2022-03-10 10:47 ` Pali Rohár
2022-03-10 10:39 ` [PATCH v3] " Pali Rohár
2022-03-10 11:51 ` Arnd Bergmann
2022-03-10 13:51 ` Gregory CLEMENT
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