From: Arnd Bergmann <arnd@arndb.de>
To: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: "open list:BROADCOM NVRAM DRIVER" <linux-mips@vger.kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Huacai Chen <chenhc@lemote.com>,
Frank Rowand <frowand.list@gmail.com>,
Paul Burton <paulburton@kernel.org>,
Nathan Chancellor <natechancellor@gmail.com>,
Nick Desaulniers <ndesaulniers@google.com>,
DTML <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/5] MIPS: Loongson64: Enlarge IO_SPACE_LIMIT
Date: Mon, 20 Jul 2020 14:20:46 +0200 [thread overview]
Message-ID: <CAK8P3a2=qrp6x4yLUXhQU2MwcMa4HpEzAdVs_zW8f14GZ-_zqQ@mail.gmail.com> (raw)
In-Reply-To: <d927b5b6-e33e-4a94-c997-b1794dbde411@flygoat.com>
On Mon, Jul 20, 2020 at 2:07 PM Jiaxun Yang <jiaxun.yang@flygoat.com> wrote:
> 在 2020/7/20 下午6:45, Arnd Bergmann 写道:
> > On Mon, Jul 20, 2020 at 9:44 AM Jiaxun Yang <jiaxun.yang@flygoat.com> wrote:
> >> It can be very big on LS7A PCH systems.
> > In practice, one should rarely need more than a few kb worth of
> > port numbers, unless you expect to see hundreds of legacy PCI
> > devices.
> I must blame stupid hardware design here. The LPC Controller (for ISA
> device) can eat
> up to 0x20000 IO BAR, and we can't resize it. Thus we have to enlarge
> the I/O Space.
Ok, I see.
Arnd
next prev parent reply other threads:[~2020-07-20 12:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-20 7:42 [PATCH 0/5] MIPS: Loongson64: Process ISA Node in DeviceTree Jiaxun Yang
2020-07-20 7:42 ` [PATCH 1/5] of_address: Add bus type match for pci ranges parser Jiaxun Yang
2020-07-21 0:21 ` Rob Herring
2020-07-20 7:42 ` [PATCH 2/5] MIPS: Loongson64: Process ISA Node in DeviceTree Jiaxun Yang
2020-07-20 10:01 ` Huacai Chen
2020-07-20 10:18 ` Jiaxun Yang
2020-07-20 11:44 ` Huacai Chen
2020-07-20 11:58 ` Jiaxun Yang
2020-07-21 0:27 ` Rob Herring
2020-07-20 7:42 ` [PATCH 3/5] MIPS: Loongson64: Enlarge IO_SPACE_LIMIT Jiaxun Yang
2020-07-20 10:03 ` Huacai Chen
2020-07-20 10:45 ` Arnd Bergmann
2020-07-20 12:04 ` Jiaxun Yang
2020-07-20 12:20 ` Arnd Bergmann [this message]
2020-07-20 7:42 ` [PATCH 4/5] MIPS: Loongson64: DTS: Fix ISA range for RS780E PCH Jiaxun Yang
2020-07-20 7:42 ` [PATCH 5/5] MIPS: Loongson64: Add ISA node for LS7A PCH Jiaxun Yang
2020-07-20 10:04 ` Huacai Chen
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