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From:   Qiujun Huang <anenbupt@gmail.com>
Date:   Tue, 24 Mar 2020 16:12:29 +0800
Message-ID: <CADG63jARzp+c9gbp5LO1a7ujgFbBoTD9kZQREFSca+Ung1wEqg@mail.gmail.com>
Subject: Re: [PATCH v2 0/3] Add basic support for Loongson 7A1000 bridge chip
To:     Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc:     Tiezhu Yang <yangtiezhu@loongson.cn>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Huacai Chen <chenhc@lemote.com>, linux-mips@vger.kernel.org,
        linux-kernel@vger.kernel.org, Xuefeng Li <lixuefeng@loongson.cn>
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On Tue, Mar 24, 2020 at 3:53 PM Jiaxun Yang <jiaxun.yang@flygoat.com> wrote=
:
>
>
>
> =E4=BA=8E 2020=E5=B9=B43=E6=9C=8823=E6=97=A5 GMT+08:00 =E4=B8=8A=E5=8D=88=
10:59:12, Tiezhu Yang <yangtiezhu@loongson.cn> =E5=86=99=E5=88=B0:
> >The Loongson 7A1000 bridge chip has been released for several years
> >since the second half of 2017, but it is not supported by the Linux
> >mainline kernel while it only works well with the Loongson internal
> >kernel version. When I update the latest version of Linux mainline
> >kernel on the Loongson 3A3000 CPU and 7A1000 bridge chip system,
> >the boot process failed and I feel depressed.
> >
> >The 7A1000 bridge chip is used a lot with 3A3000 or 3A4000 CPU in
> >the most Loongson desktop and sever products, it is important to
> >support Loongson 7A1000 bridge chip by the Linux mainline kernel.
> >
> >This patch series adds the basic support for the Loongson 7A1000
> >bridge chip, when apply these patches based on linux-5.6-rc7, the
> >boot process is successful and we can login normally used with the
>
> Is it still true without IRQ driver?
>
> >latest firmware and discrete graphics card, the next work to do is
> >power management and some other controller device drivers.
> >
> >Additionally, when I git clone mips code [1], the speed is too slow
> >and clone always failed, so this patch series is based on the latest
> >linux-5.6-rc7 [2].
>
> You can clone stable tree from mirrors in China[1] at first,
> then add mips tree as a remote and fetch from it.
> In this way it will only download a minimal difference set from foreign s=
erver so won't spend a lot of time.
>
>
> [1]: https://mirrors.tuna.tsinghua.edu.cn/git/linux-stable.git

Maybe the mirror is better
https://kernel.source.codeaurora.cn/pub/scm/linux/kernel/git//stable/linux.=
git

>
> >
> >If you have any questions and suggestions, please let me know.
> >
> >Thanks,
> >
> >Tiezhu Yang
> >
> >v2:
> >  - The split patch series about Loongson vendor ID and SATA controller
> >    has been merged into the linux-block.git by Jens Axboe [3].
> >
> >  - Think about using hierarchy IRQ domain in the patch of interrupt
> >    controller, and this maybe depend on the patch series by Jiaxun
> >    ("Modernize Loongson64 Machine"), so the patch about interrupt is
> >    not included in this v2 patch series.
> >
> >[1] git clone
> >https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git
> >[2] git clone https://github.com/torvalds/linux.git
> >[3]
> >https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/co=
mmit/?h=3Dfor-next&id=3D9acb9fe18d86
> >https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/co=
mmit/?h=3Dfor-next&id=3De49bd683e00b
> >
> >Tiezhu Yang (3):
> >  MIPS: Loongson: Get host bridge information
> >  MIPS: Loongson: Add DMA support for 7A1000
> >  MIPS: Loongson: Add PCI support for 7A1000
> >
> > arch/mips/include/asm/mach-loongson64/boot_param.h | 20 ++++++
> > arch/mips/loongson64/dma.c                         |  9 ++-
> > arch/mips/loongson64/env.c                         | 20 ++++++
> > arch/mips/loongson64/init.c                        | 17 +++++
> >arch/mips/pci/ops-loongson3.c                      | 72
> >++++++++++++++++++++--
> > 5 files changed, 131 insertions(+), 7 deletions(-)
>
> --
> Jiaxun Yang